Which of the following is not a benefit of
trees?
a. they produce oxygen.
b. they absorb carbon dioxide.
c. they prevent erosion.
d. they prevent flooding.
e. all of these are a benefit of trees.
E
You might also like to view...
What happens to CDK in the absence of cyclin?
A. It is inactive. B. It is degraded. C. It becomes phosphorylated. D. Answers a and c are both correct.
A group of viruses that cause severe diarrhea, resulting in over 600,000 deaths worldwide annually is the ________.
A. rotaviruses B. polioviruses C. herpesviruses D. poxviruses
Once a threshold is reached,
a. the number of sodium gates that open depends upon the strength of a stimulus and its duration. b. a graded local potential will be unable to spread to a trigger zone of the nerve membrane. c. the resting potential of a neuron is restored. d. potassium channels in the input zone open. e. progressive opening of more and more sodium gates and the accompanying flow of sodium ions is an example of positive feedback.
In ____________________ membranes, layers secrete fluid that fills the space between the two surfaces. Fill in the blank(s) with the appropriate word(s)