Discuss how point mutations can affect the phenotype of an organism. use the example of the hypothetical skin pigment to illustrate your point:

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture