Answer:
Excretory systems regulate the chemical composition of body fluids by removing metabolic wastes and retaining the proper amounts of water, salts, and nutrients. Components of this system in vertebrates include the kidneys, liver, lungs, and skin.
Explanation:
attracts pollinators
Discovered that DNA was in the shape of a double helix
Answer:Yeast and Bacterial ribosomes have the same number of rRNAs in them
