A large number of species in an ecosystem can be collectively termed as biodiversity.
Answer:
Tertiary structure
Explanation:
Tertiary structure can be described as the overall three-dimensional structure of the protein. Interactions between amino acid side chains (R-groups of amino acids) in protein determine its tertiary structure. These interactions play an important role in stabilizing 3-D protein structure and they involve: ionic bonds, hydrogen bonds, van der Waals interactions, covalent bonds, and hydrophobic interactions.
A single mutation can have a large effect, but in many cases, evolutionary change is based on the accumulation of many mutations. Gene flow is any movement of genes from one population<span> to another and is an important source of genetic </span>variation<span>. Sex can </span>introduce<span> new gene combinations </span>into a population<span>.</span>