Anyone know what is the answer pls ?

Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation

As a small change in a person's dna can cause a genetic disorder

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.