They are better adapted to the environment. Their darker color helps them blend in with the tree bark so common in their habitat. Because of that, more are likely to not get eaten by predators than white ones that are so easy to spot without camouflage abilities. The black moths are simply more fit to survive, and more of them will survive in this place.
Stream load is a geologic term described when a solid matter carried by a stream or a current. It can be called otherwise as a suspension where solids float on the surface as well as materials in solution. Divide is also synonymous hence the answer is bed load.
Bb is the genotype of the offspring that is a black cat
There have been numerous ways that transportation has affected communication over long distances. The postal service has changed significantly over the years. When the post office first opened. The mail was delivered slowly, by horses, carriages, or even ships if overseas. Over the years, mail is delivered overnight by airplanes and semi-trucks. Before transportation, it could months or even years to get a piece of mail, depending on where it being delivered. The opening of the transcontinental railroad also helped to change communication. People could then get to places to see and speak to family or business associates without having to take dangerous methods of transportation. Otherwise, the only way the people could have had any way to communicate would have been by the slow mail system of those days.