Blood, urine, tissue/skin, saliva, hairs, etc.
Answer:
The human population would eventually grow too large to be sufficiently supported by the food available.
Explanation:
He found that food production did not increase at an exponential rate but instead increased more slowly.
They are composed of proteins. I cannot see the options but hopefully that answer is in one of them
Answer:
Your answer is 4. Hope this helps you. Have a great day! :)
Explanation: