What is the only type of chemical signal that diffuses locally and affects nearby cells?

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.

The response is the basis for vaccination. primary secondary tertiary none of the above

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above