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Ecosystems

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Science
Which of the following is true about producers? A.They are helpful to some ecosystems and not essential to any ecosystems. B.They are helpful to all ecosystems but not essential to any ecosystems. C.They are essential to some ecosystems D.They are essential to all ecosystems

Science-check my answers plz
Which of the following explains why sunlight is important to aquatic ecosystems? Sunlight provides a source of heat energy to increase water temperatures. Sunlight keeps harmful bacteria from taking over aquatic ecosystems. Sunlight makes it possible for aquatic predators to ...

science
true or false: ecosystems with a lot of water support fewer organisms than ecosystems with little water?

Science
I'm doing a project on human population growth and the ecosystems. Does anyone know of any good websites that explain how china is affecting its ecosystems and why is chinas population growing so fast (technologically)?

Science
Why are rain forests the most diverse ecosystems? a- the are near bodies of water b- they have favorable climates c- they are surrounded by mountains d- they have more pollutants then other ecosystems my answer is B

ecosystems
How are the flow of matter and the flow of energy through ecosystems different?

Ecosystems
what r 2 major ways in which nitrogen is fixed in ecosystems? i don't get what they mean by "major" ways? also wikipedia uses difficult wordings i don't understand.

Eng
I have to do an assignment on Ecosystems perspective and social work. I'm asked to write how they would apply the in ecosystems working with a community issue. How should I start my essay? I need ideas and issues to write and what exactly is ecosystem perspectives? Thank you!

Science
[I choose b.] Where are some of the unique ecosystems of the U.S? a.in Pacific Northwest and California b.in the Flordia Everglades and Hawaii c.both (a) and (b) d.none of the above The U.S. has many unique ecosystems. Please think through the question again and post a ...

Science
Which of the following sets of words can be used to describe the outputs of photosynthesis? water, glucose, light energy carbon dioxide, glucose, chemical energy oxygen, glucose, chemical energy glucose, oxygen, light energy Which of the following is true about producers? They...

Intro to Ecology
Global estimates of denitrification in terrestrial ecosystems vary widely but are of the order 200*102 g/yr, and more than half of that total occurs in wetland ecosystems. If restoration results in an increase in wetland area by approximately 25%, it would be expected that ...

Science
1. Which of the following explains why sunlight is important to the aquatic ecosystems? A. Sunlight provides a source of heat and energy to increase water temperatures. B. Sunlight keeps harmful bacteria from taking over aquatic ecosystems. C. Sunlight makes it possible for ...

science
what differences produce a variety of ecosystems?

Ecosystems
do detrivores return eneregy to an ecosystem?

Science
Why are ecosystems important to the survival of humans?

sci
why are aquatic ecosystems important to humans?

ecosystems
All nonliving things in an area are called what?

Science
How can community growth affect local ecosystems?

science
where do we encounter concepts of aquatic ecosystems everyday?

Biology
How do natural ecosystems have more biodiversity?

4th grade
______ differences produce a variety of ecosystems

Science
what does it mean that nitrogen is a limiting nutrient in many marine ecosystems?

science
what is an ecosystem? compare and give examples of open and closed ecosystems

Ecology
How does the skin and life cycle of a frog help indicate the health of local ecosystems?

enviro science
what are the benefits and the negatives of dams and resevoirs? how do they affect ecosystems if at all?

Ecosystems
how much energy is lost 4rm producers to secondary consumers? I think between 80 and 90 percent.

Biology: Ecosystems
What are three groups of organisms that are photosynthetic autotrophs? What are the primary producers of the deep-sea vents?

science
which abiotic factor separates marine ecosystems from river ecosystem? A)sunlight B)salt C)sand D)algae

biology
The removal of which of the following would have the biggest impact on marine ecosystems? a. fishes b. whales c. shrimp D. plankton

Science
We are stumped trying to create a concept map with community, population, ecosystems, organs, tissues, cells, nucleus, golgi complex, etc. Can you help?

Environmental Science
Use your knowledge of energy flow wiyhin ecosystems to offer a simple explanation for the following statement: "All flesh is grass."

Ecosystems
any ideas on how i can make a food chain in a pond ecosystem. i guess i can include fish, sharks, polar bear and stuff, but can you assist me please.

SCI 275
To function, ecosystems require an input of energy. Where does this energy come from?

SCI 275
To function, ecosystems require an input of energy. Where does this energy come from?

Science
Water is a(n) what factor in all ecosystems that all living things require.

Science
water is a(n) factor in all ecosystems that all living things requires?

Ecosystems the pond chain
ms. sue i have another question for the food chain and i posted it on that post.

Science
Can you please tell me the effects of human activities on ecosystems. Example Human Activity and Consequences....

Biology
Hi, I am studying energy movements in ecosystems. Could you help me with this question: What type of food would be consumed by a secondaryconsumer in the third trophic level of a food chain.

Science
Explain why the life cycle and skin of the frog make it a good indicator animal if you want to determine the health of local ecosystems. Please please help. Thanks so much.

Science ecosystems
Paper Glass Aluminum Wooden ruler Sand Steak Pork chops Salad Bread Hair Cotton fabric Wool Cheddar cheese Can you tell why ? It is urgent !

ecosystems
Hi, can someone help me? What land biome has the lowest humidity? I guess Tundra. A tundra if I'm not mistaken. There were 4 answers: tundra temperate forest grassland rainforest

Ecosystems
how weathering releases phospahte from rock? i really don't know, any sites i could go on to to get the answer? no wikipedia, or hard ones. english aint my language so hard words i wont be able to understand.

science
Before beginning any land development project, people should carry out a(n) ___________________ analysis to consider all of the potential impacts of the project on the local ecosystems

science
before beginning any land development project, people should carry out a _________ analysis to consider all of the potential impacts of the project on the local ecosystems.

Science
Why are rain forests the most diverse ecosystem? a. They are near bodies of water b. They have a favorable climate c. They are surrounded by mountains d. they have more pollutants that other ecosystems

science
Why are rainforests the most diverse ecosystems? 1: they are near bodys of water 2: They have a favoritable climate 3: they are surrounded by mountains 4: they have more pollutants than any other ecosystem I think its 2 Am i right?

Science ecosystems
Paper Glass Aluminum Wooden ruler Sand Steak Pork chops Salad Bread Hair Cotton fabric Wool Cheddar cheese Can you tell why ? It is urgent ! Are they. Biotic or abiotic

science
Plants perform photosynthesis and respiration. Dead plants are broken down and become part of the soil. Which of the following matter do plants help to cycle through ecosystems?

Ecosystems
my first question still requires assistance, i need help with the first question i posted onto here. i will be grateful of your assitance.

Environmental Science
18. Which of the following is NOT an effect of acid precipitation? a. loss of animal and plant populations and aquatic ecosystems b. acidiciation of soil c. health problems and poisoning of the human body d. increased occurrences of storms, rain, hurricanes, natural disasters ...

Social Studies
Which is not an impact of global warming on ecosystems? A- population explosion among various species B- warmer weather cause some species to migrate out of their natural habitat in search for cooler temperatures C- centain species face extinction D- food supplies***

Geography
which is not an impact of global warming on ecosystems population explosion among various species warmer weather causes some species to migrate out of their natural habitat in search of cooler temperatures certain species face extinction food supply increases***

science
Low water flows are a common problem for ecosystems in semi-urban streams. Should the suggestion of using domestic drinking water supplies to increase water flows in the streams be adopted?

History
How does elevation impact ecosystems in South America A. Farmers can grow different crops at different elevations (this one?) B. Plants do not grow above the tree line C. Animals can't live in higher evelations D. Humans settle only in the lowest elevations

Science
Can someone please help me with these questions below thank you. 1. What do you think the impact of the earth's climate will be like if everyone enjoyed the same lifestyle? 2. What will it be like for The health of ecosystems and biodiversity? 3. What will the impact be like ...

Science
The Venus flytrap is a plant that lives in wetland ecosystems that do not have nitrogen-rich soils. To make up for the lack of nitrogen in the soil, this species captures insects and digests them to obtain the nitrogen it needs. The ability of these plants to capture insects ...

Biology-Ecology
Multiple choice What is the ultimate source of energy for most ecosystems, and in what form does the energy leave the ecosystem? 1. plants; animals 2. light; heat 3. plants; heat 4. producers; consumers 5. heat; light

science (help)
18.Fertilizers and pesticides applied to farm fields in Pennsylvania have made their way down into the Chesapeake Bay in Maryland. This is an example of _________________ pollution. 19.Before beginning any land development project, people should carry out a(n) ...

Biology 9
I need a topic for with this criteria.. Asses the impact of a factor related to human activity that threatens the sustainability of a terrestrial or aquatic ecosystem OR Evaluate the effectiveness of government initiatives in canada and or the efforts of societal groups (...

Science
What's the vocabulary word for the Definition (variety of habitats and communities within ecosystems)? http://en.wikipedia.org/wiki/Ecological_niche

Science
why is it important biodiversity? A. preservation of biodiversity prevents the extinction of species B. preservation of biodiversity increases the amount of fossil fuels formed in a shorter period of time. c. preservation of biodiversity disturbs the balance in ecosystems D. ...

science
Why is it important to preserve biodiversity? A. Preservation of biodiversity prevents extinction of species, b. Preservation of biodiversity prevents the human population from increasing exponentially, c. Preservation of biodiversity disturbs the balance of ecosystems, d. ...

Science
Develop three guidelines based on the four scientific principles of sustainability for our use of genetic engineering and synthetic biology to modify species and ecosystems. I know the four scientific principles are: 1) Reliance on solar energy 2) Biodiversity 3) Nutrient ...

science help plzzz
Multiple Choice 1. Which of the following images shows a living organism interacting with a biotic factor in its environment? (1 point) bird drinking water koala eating leaves plant in the Earth whale in the ocean 2. Which of the following shows the correct order from smallest...

Environmental Science
Develop three guidelines based on the four scientific principles of sustainability for our use of genetic engineering and synthetic biology to modify species and ecosystems. I know the four scientific principles are: 1) Reliance on solar energy 2) Biodiversity 3) Nutrient ...

Biology
I don't know any info an the first semester and midterms are tomorrow please help ( Populations, Communities, and Ecosystems Chemistry of Living Things History of Life on Earth: The First Simple Cells History of Life on Earth: Complex Cells Cells and Their Environment Energy ...

Science
4. Which of the following statements is true? A. Biodiversity provides additional resources that raise the carrying capacity of an ecosystem B. Biodiversity increases an ecosystems ability to withstand changes C. Biodiversity makes an ecosystem more difficult to destroy D. ...

bio check my answer plz???
Ideally, sustainable development should ___________. A)put the protection of the environment ahead of human needs B)provide for human needs at the expense of the environment C)use more natural resources to make goods to meet human needs D)preserve ecosystems while providing ...

science
what are the answers to the ecosystems packet for 7th grade in science? I need the answers asap because i need to finish getting all of the answers to the packet so i can study it tonight because i need to make up the test to that packet and it is because the day my teacher ...

Science Please Help
Which of the following statements are true A-Biodiversity provides additional resources that raise the carrying capacity of an ecosystem** B-Biodiversity increases and ecosystems ability to withstand changes C-Biodiversity makes an ecosystem more difficult to destroy D-...

biome
How has agriculture Alberta’s grassland biome 1) The grass is shorter from the cows eating it. 2) There are piles of cow poo in the grass so watch your step. Don't know much specifically about Canada's grasslands, but if you lose too much of that grass you run the risk of a ...

Science
A community obtains electricity from a coal plant. This coal plant produces pollution that has caused environmental problems in the lakes, streams, and forests within the community. What kind of secondary pollution has the coal plant most likely produced, and what kinds of ...

Science
Which abiotic factor is essential to all aquatic ecosystems excpet the ocean hydrothermal vents, and why? a. phytoplankton, because it provides a source of food b. salt, because it provides the necessary environment for organisms to move about c. deep water, because it ...

Science help
Im trying to finish my study guide so i can study this weekend but i have more problems like this and i don't have a clue of what they mean Fertilizers and perticides applied to farm fields in pennsylvania have made their way down into the chesapeake bay in maryland.this is an...

Science
[I choose a.] Preserving entire ecosystems rather than individual species is a good conservation strategy because a.only endangered species will be saved b.developers will have greater access to land c.more than one species can be saved d.it will not be necessary for ...

Ecosystems
put following terms in order from smallest to largest biome biosphere community ecosystem single species population order 1 single species 2 community 3 population 4 ecosystem 5 biosphere 6 biome

science
Which of the following best supports the idea that the melting of glaciers in Antarctica is a global environmental threat? A. The melting of glaciers can cause sea levels on Earth to fall. B. The melting of glaciers can change ecosystems in Antarctica. C. The melting of ...

sociology
From a functionalist perspective, how has human behavior and our way of life contributed to environmental problems? So far I have the premise that functionalist examine the entire system itself. Human activities have become a dominant influence on the earth's climate and ...

sociology
From a functionalist perspective, how has human behavior and our way of life contributed to environmental problems? So far I have the premise that functionalist examine the entire system itself. Human activities have become a dominant influence on the earth's climate and ...

Science
I've been asking questions and all you so called "helpers" (such as Reed, Writeacher, etc.) you are all being sarcastic. I have no interests to cheat, but you don't listen to my side notes. I am going to ask one more question, and again, be don't be sarcastic. Question. Why is...

Earth Science (check answers)
Describe the importance of maintaining the ocean ecosystem. It is important to maintain because the ocean ecosystems because it provides reefs that support a complex ecosystem of ocean organisms that live and help each other to survive. Virtually every phyla on Earth is ...

Environmental Science
#54. In two or three well-developed paragraphs, define and list two characteristics of each of the following: coastal wetlands, coral reefs, and oceans. I'm not sure what it means by defining and listing two characteristics. here's my answer: Coastal wetlands are coastal land ...

sci/275
Review Ch. 5, The Flow of Energy Through Ecosystems. Then, complete Appendix C. · Post your response to the following: Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. How did the amount ...

Science
Cave ecosystems are characterized by extremely low light levels. What role does photosynthesis play in a cave ecosystem? 1: Photosynthesis is essential because it provides the original energy source for all food chains in this ecosystem. 2: photosynthesis is essential only for...

Science
In the western U.S., ranchers aggressively killed wolves because they posed a threat to their cattle. As the wolf population declined, the deer population began increasing. As a result, the surrounding forest ecosystems experienced increasing damage. The large number of deer ...

AP environmental Science
Can someone please explain what this means to me in english? i've read it a million times and i have no idea what it means. Thanks for any help!!! "Scientific evidence shows a direct relationship between sea level and the global mean atomospheric temperature during the past ...

scienc
Resources: Ch. 5 of Visualizing Environmental Science and Appendix C „h Due Date: Day 2 [Main forum] „h Review Ch. 5, The Flow of Energy Through Ecosystems. Then, complete Appendix C. „h Post your response to the following: Identify the fruit or vegetable you selected ...

Environmental Science
7. Which of the following terms is used to describe a linear sequence in which energy is transferred from one organism to the next as each organism eats another organism? a. trophic level b. food web c. energy pyramid d. food chain D 10. Which of the following is an example of...

Environmental Science
7. Which of the following terms is used to describe a linear sequence in which energy is transferred from one organism to the next as each organism eats another organism? a. trophic level b. food web c. energy pyramid d. food chain D 10. Which of the following is an example of...

scice help!?!?!?!
can someone please help me with these 2 questions because im losing my mind! which of the following is an example of a cylic behavior that is seasonal? A.running from predators B.searching for water C.hunting at night D.migrating for warmth 12.in the western U.S.,ranchers ...

Environmental Science
Research Paper I need to write a research paper on coral reefs. i need to compose a research paper that deals with coral reefs and addresses enough of the questions below in order to meet the minimum page requirements for the paper (3-4 double spaced pages) Explain what a ...

English
Thank you very much. Here is the second part. Some data are unclear. I hope you can help me. 1) “Focus group” led by the school principal made up of the participating students (or the students involved in the project), the contact person (also: reporting person) , the ...

Science.
Which abiotic factor is essential to all aquatic ecosystems except ocean hydrothermal vents, and why? Phytoplankton, because it provides a source of food salt, because it provides a source of minerals deep water, because it provides the necessary environment for organisms to ...

Writing/Environmental science
I'm writing a thesis/research paper on how all animals play an important role on the environment. I'm trying to narrow my paper down on an endangered species but I'm having trouble deciding/thinking of a species that play IMPORTANT roles (ie.- honeybees). Except I cannot ...

social studies(updated answers)
1.B 2.C 3.B 4.D 5.A 1. which geographic features lies east of the andes moutains? A. saltwater grasses B. active volcanoes C. llanos grasslands D. mangrove swamps 2. Which landform can be found in the andes mountains? A. savannas B. cordilleras C. deserts D. plains 3. which ...

please check(Social studies)
please check my answers thanks 1. A 2. D 3. B 4. B 5. A 1. which geographic features lies east of the andes moutains? A. saltwater grasses B. active volcanoes C. llanos grasslands D. mangrove swamps 2. Which landform can be found in the andes mountains? A. savannas B. ...

Science
1. In the western U.S., ranchers aggressively killed wolves because they posed a threat to their cattle. As the wolf population declined, the deer population began increasing. As a result, the surrounding forest ecosystems experienced increasing damage. The large number of ...

Enviro Science
2. The water resources of Earth are located in a. salt water found in the ocean b. freshwater found in icecaps and glaciers c. fresh water found in rivers, lakes, and streams d. all of the above C 4. Weather is the state of the atmosphere at a moment in time and at any ...

English
Thank you very, very much indeed! Here is the second part, concerning the scientific and linguistic objectives. The question is: " What are the concrete objectives of the partnership"? 1)Scientific objectives - describing the biodiversity, the presence of macroinvertebrates as...

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