Answer:
i think reproduction, variation, and competition
Explanation:
Answer:
Proteins can be catalysts which help to reduce the energy used in a chemical reaction or speed it up. Proteins can help carry oxygen throughout the body in the form of hemoglobin
Explanation:
The only living thing that makes its own food is the plant. So the first step in a food chain is always a plant that makes its own food by sun. :)))
I hope this is helpful
have a nice day
Answer:
A
Explanation:
It kinda tells you in the question by talking about salt in water.
