The leeward side of a mountain receives far less rainfall than the windward side is what?

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

In which of the following relationships is one organism always benefited while the other organism is always harmed