Blood vessel plaques can… A) increase blood pressure by reducing the flexibility of blood vessels
B) increase blood pressure by reducing the water content of the blood
C) reduce blood pressure by increasing blood volume
D) reduce blood pressure by increasing heart rate

Which term best describes a community in which people work mostly in factories? a. agricultural. b. hunting and gathering. c. domesticated. industrial.

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 are reasons cells undergo cell division?