Scientists estimate that whaling activity in the nineteenth and early twentieth centuries reduced the number of adult female southern right whales to as few as 60 by 1920. This is an example of A. The bottleneck effect
B. The founder effect
C. Gene flow
D. Sexual selection

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

in addition to being able to metabolize, grow, digest food, and excrete wastes, what other functions must an organism perform if it is to survive? survival also depends on the ability to maintain one's boundaries, to move, to respond to stimuli, and to reproduce. oxygen is a survival need.

the combining form means bone marrow or spinal cord. meio- "meiosis" myco- "mycosis" myelo- "osteomyelitis or myelogram" myo- "myositis";

the answer is: myelo- "osteomyelitis or myelogram"