is a factor of evolution that occurs when natural disasters or organisms moving to another place cause the gene pool to shrink -mutation
-microevolution
-population shrink
-natural selection

4. how does a phospholipid behave in water? the phosphate head does not mix with water; the fatty acid tails do. the phosphate head and the fatty acid tails mix with water. the phosphate head and the fatty acid tails do not mix with water. the phosphate head mixes with water; the fatty acid tails do not.

Which of the following explains why a tree is often used as a model to represent the principle of common descent

Everything that surrounds a particular organism