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 to the stream.This is an example of_____pollution solution.
http://www.buffer.forestry.iastate.edu/HTML/buffer.html
The metamorphic rock usually forms when limestone is subjected to heat and pressure deep beneath the earths surface
Lighted bulb consumed
in order for a cell
6 of 126 of 12 Items
08:31:37
Feature
The Pollution Problem
Roberto Bererra
1Unfortunately, pollution is like air: it’s everywhere! Pollution is the introduction of harmful substances into the environment that can cause damage and harm to humans, animals, and the environment. It takes on a number of different forms, from chemicals and garbage to something as seemingly innocent as light or noise.
2Pollution comes from a variety of sources. In addition, it alters, changes, and even destroys a variety of places. For example, exhaust from cars pollutes the air. When it rains, runoff from fertilizers and pesticides, which farmers use to help crops grow, can pollute the water in oceans, rivers, lakes, and streams. Garbage dumped in landfills is not only an eyesore, but also a source of harmful gases that can damage the earth’s atmosphere. Light pollution, which comes in the form of bright streetlights or signs, disrupts the view of the night sky. Noise pollution caused by cars, trucks, and machines interrupts the natural sounds of the world around us, such as birds singing or leaves rustling.
3The types of pollution and their effects vary greatly. At the same time, however, they are related; each type of pollution affects the other types. An example of the connection between different types of pollution is acid rain. Acid rain is caused mostly by sulfur or nitrogen emissions given off by sources such as car exhaust and the burning of fossil fuels such as coal. These harmful chemicals rise into the atmosphere where they react with other compounds and then fall as an acidic form of rain, sleet, or snow. Acid rain damages plants and buildings, contaminates soil and water, and has a negative effect on animals, fish, and even humans.
4Pollution has other effects, too. Breathing toxic air or drinking polluted water can cause humans and animals to develop health problems that can be serious and sometimes deadly. The deaths of too many members of a certain species of animal can upset the local ecosystem, or the area in which they live. As a result, weather patterns and climates can also change.
5Though pollution is everywhere, there are ways to help prevent it. By walking or riding bikes—instead of driving cars—people can help decrease air pollution. People can also buy and eat organic foods to support farmers that do not use fertilizers on their crops. It is also a good idea to take old things that people intend to throw away and find new ways to use them. A great way to help the environment is to recycle. Save items like used paper, glass and plastic bottles, and metal cans. Then, take them to a recycling center where they can be turned into new products to be used again. Some cities and towns even have recycling programs in place so all you have to do is leave your recyclable items on the curb on a certain day each week. It doesn’t get much easier to help the environment and reduce pollution than that!
In paragraph 3, what point is the author making when he talks about acid rain?
Responses
A One type of pollution can lead to other types of pollution.One type of pollution can lead to other types of pollution.
B People are safer from acid rain than animals are.People are safer from acid rain than animals are.
C Acid rain only occurs in heavily polluted cities.Acid rain only occurs in heavily polluted cities.
D Acid rain is one of the most serious types of pollution.
A One type of pollution can lead to other types of pollution.
8 of 128 of 12 Items
08:33:37
Feature
The Pollution Problem
Roberto Bererra
1Unfortunately, pollution is like air: it’s everywhere! Pollution is the introduction of harmful substances into the environment that can cause damage and harm to humans, animals, and the environment. It takes on a number of different forms, from chemicals and garbage to something as seemingly innocent as light or noise.
2Pollution comes from a variety of sources. In addition, it alters, changes, and even destroys a variety of places. For example, exhaust from cars pollutes the air. When it rains, runoff from fertilizers and pesticides, which farmers use to help crops grow, can pollute the water in oceans, rivers, lakes, and streams. Garbage dumped in landfills is not only an eyesore, but also a source of harmful gases that can damage the earth’s atmosphere. Light pollution, which comes in the form of bright streetlights or signs, disrupts the view of the night sky. Noise pollution caused by cars, trucks, and machines interrupts the natural sounds of the world around us, such as birds singing or leaves rustling.
3The types of pollution and their effects vary greatly. At the same time, however, they are related; each type of pollution affects the other types. An example of the connection between different types of pollution is acid rain. Acid rain is caused mostly by sulfur or nitrogen emissions given off by sources such as car exhaust and the burning of fossil fuels such as coal. These harmful chemicals rise into the atmosphere where they react with other compounds and then fall as an acidic form of rain, sleet, or snow. Acid rain damages plants and buildings, contaminates soil and water, and has a negative effect on animals, fish, and even humans.
4Pollution has other effects, too. Breathing toxic air or drinking polluted water can cause humans and animals to develop health problems that can be serious and sometimes deadly. The deaths of too many members of a certain species of animal can upset the local ecosystem, or the area in which they live. As a result, weather patterns and climates can also change.
5Though pollution is everywhere, there are ways to help prevent it. By walking or riding bikes—instead of driving cars—people can help decrease air pollution. People can also buy and eat organic foods to support farmers that do not use fertilizers on their crops. It is also a good idea to take old things that people intend to throw away and find new ways to use them. A great way to help the environment is to recycle. Save items like used paper, glass and plastic bottles, and metal cans. Then, take them to a recycling center where they can be turned into new products to be used again. Some cities and towns even have recycling programs in place so all you have to do is leave your recyclable items on the curb on a certain day each week. It doesn’t get much easier to help the environment and reduce pollution than that!
In paragraph 5, what point is the author making when he talks about ways to prevent pollution?
Responses
A Reusing old items in new ways can actually harm the environment.Reusing old items in new ways can actually harm the environment.
B It is easier to reduce air pollution than it is to reduce water pollution.It is easier to reduce air pollution than it is to reduce water pollution.
C Simple changes can lead to big improvements for the environment.Simple changes can lead to big improvements for the environment.
D One person’s efforts will have little impact on helping the environment.
C Simple changes can lead to big improvements for the environment.
9 of 129 of 12 Items
08:34:16
Feature
Don’t Feed the Animals!
L. Han
Thousands of families travel to see the natural wonders of our national parks each year. If you visit one, you may see cute animals such as raccoons that you may want to feed. Please resist this urge, as feeding wild animals can cause all kinds of harm.
For one thing, feeding animals can hurt the ecosystem. For example, ground squirrels like to eat pine seeds. They gather and store them for the winter months. The seeds they don’t eat will grow into pine trees. If these same squirrels are fed by tourists, they will not bury seeds for the winter. The result will be fewer trees!
In addition, feeding the animals can make them sick. They will also begin to lose their wildness. This happens when the animals get used to being around humans and their vehicles, and it puts the animals in danger. Animals are often harmed when they spend time near the roads in the park.
Being in such open areas also makes them easier prey for other animals. Property can also be damaged by animals. Finally, humans can be harmed by animals who accept their food. For these reasons and many more, it’s best to admire wild animals from afar, and let them find their own meals.
Question
The author tries to persuade the reader not to feed park animals by—
Responses
A Showing that feeding the animals scares themShowing that feeding the animals scares them
B Describing the negative effects of feeding themDescribing the negative effects of feeding them
C Explaining that parks have rules about thisExplaining that parks have rules about this
D Suggesting that the park staff feeds themSuggesting that the park staff feeds them