Answer:
Your lungs contain many small, elastic air sacs called alveoli. With each breath, these air sacs take in oxygen and release carbon dioxide. Normally, this exchange of gases occurs without problems. But sometimes, the alveoli fill with fluid instead of air, preventing oxygen from being absorbed into your bloodstream.
Explanation:
Answer:
Explanation:
I'm thinking they are a rare animal due to there size,weight,how fast they can travel,and strength.
Example: Python's are known as the longest species of snake,they can grow to be 30 feet long,and can travel 1 mile per hour on just flat ground.
Chloroplast is the organelle that performs photosynthesis
It is between A and B.
But if the species is going to be extinct, that means that they are being threatened.
So the answer is B.