Afire randomly kills half the population of white-tailed deer in a forest community. most of the surviving deer have small tails. over time, the number of deer with small tails increases. this is an example of a. natural selection b. survival of the fittest c. genetic drift d. gene flow

What must be true for natural selection to heppen

Depending on the organism the number of in a cell may change

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.