a squirrel dropped an acorn from a branch of an oak tree. which of these will change as the acorn falls from the tree to the ground? the mass of the acorn the density of the acorn the force of the acorn the velocity of the acorn

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.