Answer:
Deuterium
Explanation:
Deuterium is an isotope of hydrogen with one proton and one neutron in its nucleus.
Thus it has a mass number 2.
A) it should restate the question
Mutations and natural selection cause adaptations. Mutations can cause instant adaptations, while natural selection is the process by which adaptations occurs over a series of generations.
Adaptations are changes or processes of changes by which an organism or species becomes better suited for its environment.
Sandy should've gave rap music to only one pea plant not all. The key problem was that all were being tested and one at least should not have been tested. She could change her experiment my only giving 1 planet rap music.
Polypeptide chains consist of monomers called amino acids. There are 20 types of amino acids that are usually able to create peptides and proteins.
