Propane is the correct answer to your question
Answer:
Yes size does affect whether something lives
Explanation:
Depending on your size is how much you eat and weigh. it also affects your muscle strength and abilities. For example an elephant can weight 6 tons or more,they eat a lot to maintain their weight if they dont they will have malnutrition and starve to death. since they eat so much they are enormous and so is their strength and muscles.
Size effects how one eats. How much they can take on and their strength, this is all a way of life.
Answer:
Peptide bonds
Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.
I believe this is a bit of a trick question, while you are right about both B and D, they both preexist they just develop into other structures. I believe the correct answer is A since the nerve cord is hollow not solid.
The answer is B. They have become habituated to human contact.