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Which trophic level contains the organisms that are the source of all chemical energy used in an ecosystem?
sun→alga→small fish
a biome
climate and plant and animal life
producers
The water on earth changes forms as it moves from one reservoir to another.
Many fish lost their habitats as kelp was destroyed by sea urchins.
Certain bacteria living in the roots of plants convert nitrogen to a form plants can use, and animals obtain their nitrogen b
colder temperatures
Which of the following consequences occurred when sea otters were overhunted along the Pacific Coast?
sun→alga→small fish
a biome
climate and plant and animal life
producers
The water on earth changes forms as it moves from one reservoir to another.
Many fish lost their habitats as kelp was destroyed by sea urchins.
Certain bacteria living in the roots of plants convert nitrogen to a form plants can use, and animals obtain their nitrogen b
colder temperatures
A large geographic area dominated by specific types of plants and animals and characterized by a distinct climate is called __________.
sun→alga→small fish
a biome
climate and plant and animal life
producers
The water on earth changes forms as it moves from one reservoir to another.
Many fish lost their habitats as kelp was destroyed by sea urchins.
Certain bacteria living in the roots of plants convert nitrogen to a form plants can use, and animals obtain their nitrogen b
colder temperatures
During the summer in the Arctic, mosquitoes breed exponentially. When winter comes, the population decreases dramatically due to a limiting factor. What is most likely the limiting factor in this situation?
sun→alga→small fish
a biome
climate and plant and animal life
producers
The water on earth changes forms as it moves from one reservoir to another.
Many fish lost their habitats as kelp was destroyed by sea urchins.
Certain bacteria living in the roots of plants convert nitrogen to a form plants can use, and animals obtain their nitrogen b
colder temperatures
Which statement best describes how organisms use nitrogen?
sun→alga→small fish
a biome
climate and plant and animal life
producers
The water on earth changes forms as it moves from one reservoir to another.
Many fish lost their habitats as kelp was destroyed by sea urchins.
Certain bacteria living in the roots of plants convert nitrogen to a form plants can use, and animals obtain their nitrogen b
colder temperatures
To identify a biome, which types of information would be most helpful?
sun→alga→small fish
a biome
climate and plant and animal life
producers
The water on earth changes forms as it moves from one reservoir to another.
Many fish lost their habitats as kelp was destroyed by sea urchins.
Certain bacteria living in the roots of plants convert nitrogen to a form plants can use, and animals obtain their nitrogen b
colder temperatures
Which statement best summarizes the water cycle?
sun→alga→small fish
a biome
climate and plant and animal life
producers
The water on earth changes forms as it moves from one reservoir to another.
Many fish lost their habitats as kelp was destroyed by sea urchins.
Certain bacteria living in the roots of plants convert nitrogen to a form plants can use, and animals obtain their nitrogen b
colder temperatures
Which of the following most accurately demonstrates the order of energy flow in an ecosystem?
sun→alga→small fish
a biome
climate and plant and animal life
producers
The water on earth changes forms as it moves from one reservoir to another.
Many fish lost their habitats as kelp was destroyed by sea urchins.
Certain bacteria living in the roots of plants convert nitrogen to a form plants can use, and animals obtain their nitrogen b
colder temperatures
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