Pyramids of numbers are of limited usefulness because they:a
do not indicate the biomass of the organisms at a given time.
b. do not indicate the gross primary productivity of each species.
c. do not include energy flow through the ecosystem.
d. include three trophic levels.
e. None of the answer choices is correct.
A
You might also like to view...
Which of the following cell types does not move materials through the body of the plant?
A. sclerenchyma B. xylem vessel members C. sieve tube members D. tracheids E. sieve cells
The heart chamber with the thickest wall is the
a. left ventricle. b. right ventricle. c. right atrium. d. left atrium. e. both atria have equally thicker walls than the ventricles
Archaeans include three main groups which include
__________ (methane producers), __________ (salt lovers), and __________ (heat lovers). Fill in the blank(s) with the appropriate word(s).
When the human body temperature rises above 105
degrees Fahrenheit, a. normal cooling mechanisms fail. b. the heart beats more rapidly than normal. c. mental confusion sets in. d. symptoms of heat stroke develop. e. all of these occur.