Which is used by scientists to find out how different species are related?

a. the locations of islands in an ocean

b. the food an organism eats

c. the order of amino acids in a protein

Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?

Which label identifies the part of the atp molecule that changes when energy is released in the cells of all living things

What is the correct order of cell division? include what happens in each phase