Answer:
20.9 percent
Around 78% of the air is nitrogen gas, and only 20.9% is oxygen.
Explanation:
20.9 percent
Around 78% of the air is nitrogen gas, and only 20.9% is oxygen.
Hope this helps.
Answer:
the answer is B brainlest plz
Explanation:
Plastic. It’s easier to clean and does not have many places for it to hide unlike wood.
C. Peer pressure can sometimes be healthy and not always bad.
The main one is actin. Actin in a protein that forms its molecules to form twisting chains into a helix formation. These proteins support the contraction of muscles.
