Oscar likes to run at night. even though it is dark, oscar can see because his eyes have specialized cells that convert the low levels of light energy into neural activity. these cells are known as

The body is protected against harmful flu viruses by

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 beat describes the brain stem