Answer:
There is a higher oxygen content in the air of the lungs than that of oxygen-depleted blood and a lower carbon dioxide concentration. This gradient of concentration causes gas exchange during respiration.
Explanation:
The respiratory system contains the lungs, so the answer is C. Hope this helps.
The answer is: A
Chemical energy
The correct answer would be C.seasonal changes in the amount of daylight. Since leaves require sunlight in order to perform photosynthesis to keep the tree alive, when seasonal changes occur where there is not enough sunlight throughout the day, trees go dormant for the season until conditions are right.
Answer:
Cons: Pollution may muddy landscapes, poison soils and waterways, or kill plants and animals. Humans are also regularly harmed by pollution. Long-term exposure to air pollution, for example, can lead to chronic respiratory disease, lung cancer and other diseases What are the pros of pollution?
However, there may be some small advantages to air pollution:
Air pollution helps plants grow. Guess what our factories and cars put in the air? ...
Air pollution slows climate change. Some pollutants we put out heat up the Earth, like carbon dioxide. ...
Air pollution keeps polluted cities cooler in the summer.
