Sensation is the process by which our sensory receptors and nervous system take in stimulus energies from the environment; and perception is the process by which our brain organizes and interprets sensory information, transforming it into meaningful objects and events.

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.

Which event would lead to primary succession of a forest?

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f