To solve the problem of a polluted stream a scientist traced where the pollution came from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream

44,545 results
  1. science (any tutor)

    Which kind of pollution is illustrated by a pipe gushing polluted water into a river? A. Point source*** B. Nonpoint source C. Carbon source D. Resource source

  2. physics

    A stream is 30. meters wide and its current flows southward at 1.5 meters per second. A toy boat is launched with a velocity of 2.0 meters per second eastward from the west bank of the stream a. what is the magnitude of the boat's resultant velocity as it

  3. Environmental Science

    1. Decibel is a measurement of the amount of pollution (True or False) 2. Non-Point-Source pollution can be traced to one specific source (True or False) 3. Point-Source pollution is pollution that comes from identifiable locations. (True or False) 4.

  4. science

    Directions to the City of Springfield has built a public park around beautiful Cypress Pond. The city has hired you as its lead environmental scientist. Your job is to monitor the impact the new park has on the. Biodiversity of cypress pond. You will need

  5. Econ MC

    Two firms, A and B, each currently dump 50 tons of chemicals into the local river. The government has decided to reduce the pollution and from now on will require a pollution permit for each ton of pollution dumped into the river. The government gives each

  6. Science Help!!!!

    In which of the following places is it more difficult to determine if there is pollution? A. Aquifer B. Stream C. Ajr D. Pond Is the answer d?

  7. Science

    Which kind of pollution is illustrated by a pipe gushing polluted water into a river? A. Point source B. Nonpoint source C. Carbon source. D. Resource source

  8. Science

    A______________________ is a tool used to capture the energy in sunlight. Recycling aluminum cans and taking shorter showers are two ways to practice the ________________________ of natural resources. Some plastics are made from corn. These plastics are

  9. Help!

    Geothermal power would be classified as a(n) _____________________ resource because its supply will not run out. An example of a renewable and inexhaustible resource that requires the construction of dams is _________________________ energy. To solve the

  10. ALGEBRA

    A BOATMAN ROWS TO A PLACE 48KM DISTANT AND BACK IN 14 HOURS; HE FINDS HE CAN ROW 4KM WITH THE STREAM IN THE SAME TIME AS 3KM AGAINST THE STREAM. FIND THE RATE OF THE STREAM?

  11. Science

    Which of the following is an example of a nonpoint source of freshwater pollution A. Pesticide runoff from farm fields B. Leaking toxic waste landfill C. Sewage treatment plant D. Factory waste piped into a stream*

  12. Science Help!!!!

    To solve the problem of a polluted stream a scientist traced where the pollution was coming from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of

  13. 10th grade

    A stream is 30. meters wide and its current flows southward at 1.5 meters per second. A toy boat is launched with a velocity of 2.0 meters per second eastward from the west bank of the stream a. what is the magnitude of the boat's resultant velocity as it

  14. Science

    To solve the problem of a polluted stream a scientist traced where the pollution came from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of

  15. History

    Which of the following was a major factor contributing to the problem addressed in the quotation? a.) the sudden increase in property crimes b.) the problem of sanitation in cities c.) the mass crowding of city and tenement buildings d.) the problem of

  16. SCIENCE

    To solve the problem of a polluted stream a scientist traced where the pollution came from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of

  17. History HELP

    Which of the following is a common source of groundwater pollution? A)Oil dumping and oil spills B)Tossing candy bar wrappers into a stream C)Flushing household chemicals down the toilet D)Leaking storage containers outside factories is it a

  18. Environmental Science

    I need help on this question: 29. A common feature of thermal pollution and artificial eutrophication is that they both a. have sources that are difficult to identify and control b. cause large mats of algae to bloom in fresh water c. are a result of power

  19. Science

    Q1: Why do scientist use models? A.) Scientist use models to learn about things that are too small, too late, or too complex to observe directly. B.) Scientist use models because doing so is always part of the scientific method. C.) Scientist use models

  20. science help pls pls

    A pond is located beside an open mine. Mercury from the mine contaminates the river water. This is an example of single pollution multiple pollution point source pollution non-point source pollution would this one be c or b. im having trouble with this

  21. algebra

    Essam traced his ruler on graph paper. He kept the edge of the ruler on the paper while he flipped the ruler over. Then, he traced the ruler again. What type of transformation did he perform? A. duplication B. translation C. reflection D. rotation help

  22. Science

    A scientist goes to a large international conference and hears about a new discovery. The scientist is very excited about these new findings and decides to verify the other scientists’ results by conducting her own investigations. The scientist is being

  23. Science

    How might creativity help a scientist? A.Creativity allows a scientist's findings to be trusted. B.Creativity allows a scientist to develop new ideas or evaluate old ideas in a new way. C.Creativity assures that the scientist has a sense id right and

  24. art

    In what way is a conservator similar to a scientist? A:Both conservator and scientist relish doing research for extended periods of time. B:a conservator experiments with conservation materials just as a scientist experiments with different hypothesis.

  25. trig

    A plane climbs into the jet stream which is flowing at a rate of 80 miles per hour. It travels with the jet stream for 5 hours and then reduces its altitude, flying out of the jet stream for 4 more hours. The plane, while out of the jet stream, covered 550

  26. Physics

    A stream moving with a speed of 0.5 m/s reaches a point where the cross-sectional area of the stream decreases to one-fourth of the original area. What is the water speed in this narrowed portion of the stream?

  27. Science

    If Changing conditions lead to the decreased ocygen levels in the stream the carrying capacity of the stream for the trout will decreace oxygen levels in water is therefore a ________ with respect to the number of trout that a particular stream can

  28. science

    im stuck on this problem fill in the blank To solve the problem of a polluted stream a scientist traced where the pollution came from.She determines=d that the pollution was coming from many small sources.she worked on a plan to help reduce the pollution

  29. Science

    What resources should a scientist use to research water pollution?

  30. Marginal Analysis

    Applacian Coal Mine Co believes it can increase labor productivity and therefore, net revenue by reducing air pollution in its mines. It is estimated that the marginal cost for reducing pollution by installing additional capital equipment is MC =

  31. Earth Science

    A contour (topographic) map indicates that a stream is flowing across a landscape. If the stream has a constant volume, where on the map would the stream most likely have the highest velocity? a. As the stream moves across several closely spaced contour

  32. math

    Solve the problem. A cruise boat travels 48 miles downstream in 3 hours and returns upstream in 6 hours. Find the rate of the stream.

  33. CHEMISTRY

    When air pollution is high, ozone (O3) contents can reach 0.60 ppm (ie., .60 mol ozone per million mol air). How many molecules of ozone are present per liter of polluted air if the barometric pressure is 755 mm Hg and the temperature is 79 degrees F? I

  34. science question

    If changing conditions lead to decreased oxygen levels in a stream, the carrying capacity of the stream for fish will decrease. Oxygen level in water is therefore a ______with respect to the number of trout that stream can support. Any idea?

  35. physics

    Within the jet stream, a plane flies at 220 m/s at 19 degrees south of west. The jet stream itself is moving at 130 m/s due north. Find the velocity of the jet stream relative to the ground.

  36. English

    Act I of An Enemy of the People Question Think carefully about what each quote might infer about the character and choose the most appropriate answer in the context of the play. Taking one thing with another, there is an excellent spirit of toleration in

  37. math

    Essam traced his ruler on graph paper. He kept the edge of the ruler on the paper while he flipped the ruler over. Then, he traced the ruler again. What type of transformation did he perform?

  38. Science

    If changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will decrease. Oxygen level in water is therefore a(n) _____________ with respect to the number of trout that a particular stream can

  39. science

    If changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will decrease. Oxygen level in water is therefore a(n) _____________ with respect to the number of trout that a particular stream can

  40. MATH

    in a contest, Bello. Adamu, and Lawi are asked to solve a mathematical problem. the probability that they solve the problem correctly are 1/5, 2/3, and 2/5. find the probability that:(1)None of them solve the problem correctly(2)At least one of them solve

  41. Economics

    There are three industrial firms in Happy Vally. Initial Cost of Reducing Firm Pollution Level Pollution by 1 unit A 70 units $20 B 80 units $25 C 50 units $10 The government wants to reduce pollution to 120 units, so it gives each firm 40 tradable

  42. science

    To solve the problem of a polluted stream a scientist traced where the pollution came from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of

  43. Science

    To solve the problem of a polluted stream a scientist traced where the pollution came from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of

  44. economics

    Now a days Ganga water in highly polluted. What are the main sources of this pollution? What measures are being taken by government of India to check this pollution?

  45. Envi

    I need help on this question: 29. A common feature of thermal pollution and artificial eutrophication is that they both a. have sources that are difficult to identify and control b. cause large mats of algae to bloom in fresh water c. are a result of power

  46. Science

    When would a model be most beneficial to a scientist? A. when a scientist wants to do a hands on experiment B. when a scientist wants to represent things that are either very large or very small. C. when a scientist wants to be creative D. when a scientist

  47. Math

    Suppose a scientist on Earth throws a baseball upward. The scientist lets go of the ball 2 meters above the ground with an initial velocity of 10 meters per second. How long does it take for the ball to hit the ground (H=0)? (Use the quadratic formula to

  48. Science:Earth Science

    Explain how energy conservation can help with decreasing air, water and land pollution. This is an essay question. This is my answer. Answer: Energy conservation can help with decreasing air, water, and land pollution because of the different alternatives

  49. Science

    What resources should a scientist use to research water pollution?

  50. environ. probl-please revise

    Discuss an environmental problem that you feel is significant in your town or city. What are some causes? Are any of these causes related to human values and environmental ethics? Explain. Environmental problem faces a variety of issues around the world

  51. english

    which is the best thesis A. Because air pollution is of serious concern to people in the world today, many countries have implemented a variety of plans to begin solving the problem. B. So far, research suggests that zero-emissions vehicles are one

  52. Science Help!!!!

    1. Which of the following types of pollution cannotbe attributed to car and truck emissions? A. Acid rain B. Sedimentation C. Ozone D. Photochemical smog 2. In which of the following places is it more difficult to determine if there is pollution? A.

  53. english

    can anyone tell me if this is correct? Read the following sentences, and focus on the grammar area specified in the left column. Then, complete Appendix H by selecting the correct sentence (a or b) Vague pronouns - B 25a. Air pollution normally increases

  54. english

    can anyone tell me if this is correct? Read the following sentences, and focus on the grammar area specified on the top line before the statement then select the correct sentence (a or b) Vague pronouns - B 25a. Air pollution normally increases along with

  55. Science Help!

    3. Using coal for fuel releases pollution into the atmosphere. Why do people continue to use coal if it causes pollution? A. Using more coal reduces the amount of pollution from using oil B. Using coal is relatively inexpensive. C. Mining coal helps

  56. English

    Which sentence is Vague pronoun 25a. Air pollution normally increases along with population growth. This increasing pollution is a big problem for many cities. 25b. Air pollution normally increases along with population growth. This is a big problem for

  57. English

    Which is the correct vague pronoun and why 25a. Air pollution normally increases along with population growth. This increasing pollution is a big problem for many cities. 25b. Air pollution normally increases along with population growth. This is a big

  58. Science

    How might creativity help a scientist? a)creativity allows a scientist's findings to be trusted. b)Creativity alllows a scientist to develop new ideas or evaluate old ideas in a new way. c)Creativity assures that the scientist has a sense of right and

  59. English

    All of the water is polluted. Each of the wather is polluted. Some of the milk is bad. Some of the apples are rotten. All of the milk is decayed. (Are all the expressions grammatical? - The subject verb agreement-)

  60. English

    Hi can you help me with my essay is about the pollution. Thanks Nowadays, many people in the world have become aware of the problems about pollution and the environment. Also, different organizations have started to promote awareness campaigns to

  61. math

    A man rows to a place 48 km distance and back in 14 hours.He find that he can row 4km with the stream in the same time as 3 km against the stream.what is the rate of the stream?

  62. algebra

    a scientist has a 25% acid solution.how many liters of each does the scientist need to make 15L of a solution that is 28%.write a system of equations and solve using any method.

  63. english 25

    Vague pronouns 25a. Air pollution normally increases along with population growth. This increasing pollution is a big problem for many cities. 25b. Air pollution normally increases along with population growth. This is a big problem for many cities. My

  64. PHYSICS

    A BOATMAN ROWS TO A PLACE 48KM DISTANT AND BACK IN 14 HOURS; HE FINDS HE CAN ROW 4KM WITH THE STREAM IN THE SAME TIME AS 3KM AGAINST THE STREAM. FIND THE RATE OF THE STREAM? please help me :(

  65. Chemistry, HELP!

    Molybdenum (Mo) is a heavy metal that can have severe health effects on humans and animals. Tailings from a mining operation in Colorado have polluted surface waters used by grazing animals with Mo. Based on the following information determine the

  66. trig

    jet stream which is flowing at a rate of 80 miles per hour. It travels with the jet stream for 5 hours and then reduces its altitude, flying out of the jet stream for 4 more hours. The plane, while out of the jet stream, covered 550 miles less than it did

  67. P.E. help

    The burning of fossil fuels contribuets to: A. Air pollution B. Water pollution C. Land pollution D. Sewage Is the answer A?

  68. math

    Recently a census was taken on space station Gamma. Of the 100 residents interviewed, 75 traced their ancestry to the planet Omicron, 85 traced their ancestry to the planet Omega and 60 residents traced their ancestry to both planets. How many residents

  69. Health

    The burning of fossil fuels contributes to: water pollution sewage air pollution**** land pollution

  70. Science

    Estuaries are often highly polluted bodies of water and can be used to measure the overall health of an ecosystem. Devise a logical argument for why estuaries become so polluted and provide at least 2 examples of the importance of estuaries. My answer: The

  71. Science

    I'm not really sure what the answer is to this one. Please help! Pollution hanging over urban areas that causes reduced visibility is called A) Air Pollution **** B) Light Pollution C) Temperature Inversion D) Smog

  72. College Micro Econ

    Assuming that pollution cannot be removed from the environment at zero cost, the optimal level of pollution will be negative, positive,zero or marginally incremental for additional pollution ? I think I know the answer, I just need another opinion. Let me

  73. science

    A scientist goes to a large international conference and hears about a new discovery. The scientist is very excited about these new findings and decides to verify the other scientists' results by conducting her own investigations. The scientist is being

  74. math

    A (yearly) cash flow stream is x=(-40,10,10,10,10,10,10). The spot rates are (yearly in percentage) s=(5.0,5.3,5.6,5.8,6.0,6.1). Use the discount factors to determine the (net) present value of the stream. (I got a little confused here. Should I 1. use the

  75. Managerial Economics

    Since dry cleaning produces air pollution, a small town with two dry cleaning companies has decided to regulate the dry cleaning industry. The two dry cleaning companies, Company A and Company B, currently produce 350 units of air pollution, which the town

  76. earth

    A winding natural stream with weeds has an average depth of 0.86m and is 7.25m across. The stream channel drops 0.34 m/km. What is the stream’s average velocity?

  77. Science

    If the fish from a particular stream have become genetically adapted to their home stream over many generations, what might happen if their fertilized eggs are used to "restock" a different stream that has become depleted of fish?

  78. Chemistry

    Robin the Research scientist prepares 100 mLs of a solution of 100 mM of Tris HCl. What is the pH? and part two for this question Calculate the pH when the scientist adds 100 ul of 50% NaOH I am confused since we do not know the conjugate base

  79. reading

    what this the answer for this question We can conclude from paragraph a)theories are often revised. b)theories are never modified. c)theories are always changed. d)theories are mostly illogical. The concept that the Earth is a sphere can be traced back

  80. physics

    A firefighter at street-level, 55.0 m away from a burning building, directs a stream of water from a fire hose at an angle of 35.0° above the horizontal. If the speed of the stream is 50.0 m/s, at what height will the stream of water strike the building?

  81. Science

    A stream with current running at 4km/h is 250 m wide between two parallel banks .A boat has to cross the stream. It's speed in still water is 6 km/h . 1. In what direction will it cross the stream in the least possible time.? 2.In what direction will it

  82. Science

    1. To a scientist, a river is a kind of stream. True or False. 2. All streams carry sediment. T/F. 3. A delta keeps growing. T/F. 4. Heavy rain always cause flooding. T/F. 5. A river bank is at the end of a river. T/F.

  83. science

    A scientist working on developing a new drug for a company that makes medicine. The research is taking longer than the scientist had thought it would and the company is putting pressure on the scientist to finish quickly. The drug is finally ready to begin

  84. Econ

    Suppose the marginal cost of pollution reduction is ½ R, where R is the amount of pollution reduced given in percentage terms. The marginal benefit of pollution reduction is 90 - R. The government plans to auction off marketable permits in order to reduce

  85. ECON

    Suppose the marginal cost of pollution reduction is ½ R, where R is the amount of pollution reduced given in percentage terms. The marginal benefit of pollution reduction is 90 - R. The government plans to auction off marketable permits in order to reduce

  86. economics

    3 firms a, b, and c. A emits 15 units of pollution @ $1 cost to reduce pollution. B. emits 30 units @ $2 reduction cost. C. 45 units at $3 cost of reduction. Policy makers are seeking to cut pollution in half (90 to 45 units). How to go about it in a fair

  87. English

    1. He passed the bakery and met one of his friends. 2. He passed a stream and became wet. 3. He passed a stream and found a bakery. --------------------------- In #2, he passed through a stream. What about in #3? Did he pass through a stream or not? Did he

  88. Science

    a fireman 50 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 30 degrees above the horizontal. If the speed of the stream is 40m/s , at what height will the stream of water strike the building?

  89. science

    If changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will decrease. Oxygen level in water is therefore a(n) _____________ with respect to the number of trout that a particular stream can

  90. Science

    If changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will decrease. Oxygen level in water is therefore a(n) _____________ with respect to the number of trout that a particular stream can

  91. Science

    If changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will decrease. Oxygen level in water is therefore a(n) _____________ with respect to the number of trout that a particular stream can

  92. Science

    If changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will decrease. Oxygen level in water is therefore a(n) _____________ with respect to the number of trout that a particular stream can

  93. math

    a boat goes 12km upstream and 40km down stream in 8 hour it go 16km upstream and 39km down stream in same time find the speed of boat in the still water and in the stream

  94. groundwater science

    Assume that a gaining stream exists in physical connection with groundwater in an unconfined aquifer. Assume that several contour lines of equal head cross the stream and intercept it. True or False: Since the stream is gaining, the contour lines of equal

  95. Science

    If Changing conditions lead to the decreased ocygen levels in the stream the carrying capacity of the stream for the trout will decreace oxygen levels in water is therefore a ________ with respect to the number of trout that a particular stream can

  96. Child development

    Using these steps, consider a cognitive “problem” a young child might encounter that he/she needs help with (such as putting together a puzzle, sequencing – putting items in order, sorting by color or size, adding, subtracting, tying shoes, learning

  97. please/revise english

    Indeed, the environment ignores state borders, and environmental pollution is not restrained within boundaries. When pollution originates in one country and crosses the frontier, leading to negative impact on the environment of other countries, it

  98. Pre calculus

    How do I solve this exponent problem? I understand the exponent rules, but I getting 1 but 1 is not the answer! I don't want anyone to solve the problem for me, I want to learn how to solve this type of problem. Thank you! Solve the equation: -8=-3-6

  99. science 207

    How does changing the water source's designated purpose affect the allowed pollution levels? How do you contribute to water pollution and what concerns do you have about water pollution?

  100. English

    1. He can not solve the math problem. 2. He cannot solve the math problem. 3. He can't solve the math problem. 4. He could not solve the math problem. 5. He couldnot solve the math problem. 6. He couldn't solve the math problem. (Are they all grammatical?

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