How can natural selection affect a predator-prey relationship in an ecosystem?

choose all answers that are correct.

a. natural selection can influence both predator and prey populations.

b. nature selects for traits that allow for increased rates of reproduction and survival over traits that don't.

c. natural selection determines which generations will be influenced by natural selection.

d. one population is not affected by the changes in another population.

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.