NEED HELP ANSWERING THIS 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

The negative impacts of nonnative species generally outweigh the positive impacts

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?