Which term do biologists use to describe the average number of individuals of a species per unit area? A. carrying capacity

B. population density

C. minimal viable population

D. survivability curve

Which part of cellular respiration must occur before any of the other steps can occur

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons