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Which is a major cause of air pollution?
They crowd out the native plants.
insects
rivers and streams
Temperatures near Earth'ssurface have increased as carbon dioxide levels in the air have increased.
a large variety of species of animals and plants
Some animals need fast-moving water and others do best in or near quiet ponds.
the burning of coal, oil, and natural gas
Their habitats are destroyed.
What is the main effect of the removal of trees on animals that live in a forest?
They crowd out the native plants.
insects
rivers and streams
Temperatures near Earth'ssurface have increased as carbon dioxide levels in the air have increased.
a large variety of species of animals and plants
Some animals need fast-moving water and others do best in or near quiet ponds.
the burning of coal, oil, and natural gas
Their habitats are destroyed.
Which is a characteristic of a tropical rainforest?
They crowd out the native plants.
insects
rivers and streams
Temperatures near Earth'ssurface have increased as carbon dioxide levels in the air have increased.
a large variety of species of animals and plants
Some animals need fast-moving water and others do best in or near quiet ponds.
the burning of coal, oil, and natural gas
Their habitats are destroyed.
Why are the effects of a beaver's dam good for some animals but not good for others?
They crowd out the native plants.
insects
rivers and streams
Temperatures near Earth'ssurface have increased as carbon dioxide levels in the air have increased.
a large variety of species of animals and plants
Some animals need fast-moving water and others do best in or near quiet ponds.
the burning of coal, oil, and natural gas
Their habitats are destroyed.
Some plants do not grow naturally in an area. How can these plants endanger the plants that do grow naturally there?
They crowd out the native plants.
insects
rivers and streams
Temperatures near Earth'ssurface have increased as carbon dioxide levels in the air have increased.
a large variety of species of animals and plants
Some animals need fast-moving water and others do best in or near quiet ponds.
the burning of coal, oil, and natural gas
Their habitats are destroyed.
Which statement about carbon dioxide levels in the atmosphere refers to global warming?
They crowd out the native plants.
insects
rivers and streams
Temperatures near Earth'ssurface have increased as carbon dioxide levels in the air have increased.
a large variety of species of animals and plants
Some animals need fast-moving water and others do best in or near quiet ponds.
the burning of coal, oil, and natural gas
Their habitats are destroyed.
Which ecosystem is changed when a beaver builds a dam?
They crowd out the native plants.
insects
rivers and streams
Temperatures near Earth'ssurface have increased as carbon dioxide levels in the air have increased.
a large variety of species of animals and plants
Some animals need fast-moving water and others do best in or near quiet ponds.
the burning of coal, oil, and natural gas
Their habitats are destroyed.
All of the following are vertebrates except
They crowd out the native plants.
insects
rivers and streams
Temperatures near Earth'ssurface have increased as carbon dioxide levels in the air have increased.
a large variety of species of animals and plants
Some animals need fast-moving water and others do best in or near quiet ponds.
the burning of coal, oil, and natural gas
Their habitats are destroyed.
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