Please answer those questions
1.  Name three forces or processes that constraintrait values.
2. If a trait does not impart function, it may be lost or becomevestigial through time. Why?
3.. Stress tolerance can range from broad to narrow. Withoutconsidering environmental variability, what type of stresstolerance yields higher fitness for an organism?
4.Distinguish between fine- and coarse-grained environments.
