6. Your friend is trying to gain some more muscle and has started lifting weights. You read that muscle structure is primarily built by putting amino acids together through protein synthesis.
What foods should you recommend to your friend, so that they can increase the amount of amino acids in their diet?
1. Identify a food from the selection that they should eat.
2. Explain how you know that food has the biomolecule they need.

1. desertification

2. captive breeding

3. black rhinoceros

4. renewable resources

explanation:

mark brainliest!

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

trachea, alveoli, lung capillaries, arteries