Energy flow in an ecosystem is
a. cyclical.
b. one-way.
c. two-way.
d. reversible under different conditions.
e. dependent on the organisms in the ecosystem.
B
You might also like to view...
Which of Lamarck's ideas was the least influential to Darwin’s evolutionary theory?
a. Species change through time. b. New characteristics are passed from one generation to the next. c. Organisms change in response to their environment. d. Acquired characteristics are passed on from parents to offspring. e. Specific mechanisms exist that foster evolutionary change.
Mitosis in mammals usually takes less than an hour
Indicate whether the statement is true or false
Which of the following is(are) part of the central nervous system?
A) motor system B) brain and spinal cord C) brain only D) spinal cord only
If a human zygote has either 45 or 47 chromosomes it was caused by nondisjunction.
a. true b. false