Answer:
The human respiratory system contains the organs that allow us to get the oxygen we need and to remove the waste carbon dioxide we do not need. It contains these parts: two lungs. ... various structures in the chest that allow air to move in and out of the lungs.
The first is A second is C
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Answer: The image at the top right corner of the page is the answer.
Explanation:
In the food web, arrows are pointed towards the consumer (not otherwise). In essence, two arrows should be pointed towards mouse, since it feeds on both algae and grass. While a single arrow is to be pointed to wolf, since it only feed on mouse.
Thus, the image at the top right corner of the page is the answer.
A population decrease in primary producers would affect the ecosystem negatively because everyone who ate the primary consumers would have a lack of food.
Here ya go hoope this helps