Answer:
amylase
Any of a class of digestive enzymes, present in saliva, that break down complex carbohydrates such as starch into simpler sugars such as glucose.
I believe it's B and C because "Chloroplast" and "Vesicle" are found in plants not animals
Answer:
The part of the DNA molecule that varies among DNA molecules is nitrogenous bases.
All these gases are that are contributing to this are called biotic factors, abiotic factors, and organic factors.