Net primary productivity is a measure of the rate at which ____ accumulate energy, as well as the rate at which new
____ is added to a system.
a. consumers; inorganic material
b. producers; inorganic material
c. carnivores; prey
d. producers; biomass
e. consumers; biomass
ANSWER: d
You might also like to view...
Anemia can result from a deficiency of ____
a. calcium b. chlorine c. iodine d. iron e. phosphorus
When faced with a sudden drop in environmental temperature, an endothermic animal will ________.
A. experience a drop in its body temperature B. wait to see if it goes lower C. increase muscle activity to generate heat D. add fur or fat to increase insulation
For your eye to focus on this sentence, the ciliary muscle would need to:
a. contract for the lens to get rounder. b. contract for the lens to get flatter. c. relax for the lens to get rounder. d. relax for the lens to get flatter. e. relax to thin out the lens.
Binding of a signaling molecule to which type of receptor leads directly to a change in the distribution of ions on opposite sides of the membrane?
A) receptor tyrosine kinase B) G protein-coupled receptor C) ligand-gated ion channel D) intracellular receptor