Ash trees are being removed when they show signs of the ash borer, a parasite that affects the trees and kills them off. what best explains why the ash trees are being cut down? the ash borer is a density-independent limiting factor, and humans need to clear cut to control tree density. the ash borer is a density-dependent limiting factor and will start to spread to nearby healthy trees. ash trees are outcompeting other trees and are thus more affected by the ash borer. long periods of drought have caused an increase in the ash borer population.

ANSWER:  Ash trees are being cut down because the ash borer is a density-dependent factor and will start spreading to nearby healthy trees.

REASONING:  Density-dependent factors are factors that effect the size or growth of the population.  These factors can vary with the population density.  The population of ash borers is density-dependent because if they are provided more habitat (ash trees), their population will increase.

B. The ash borer is a density-dependent limiting factor and will start to spread to nearby healthy trees.

Explanation:

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.