Between blood, liver, skin, and kidney cells, which:

- divides the most
- never or barely divides
- only divides when needed
- divides more than normal and without control

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above

What would most likely happen if green plants were exposed to longer days of sunlight? a. the mitochondria would produce less energy . b. the chloroplasts would produce more energy. c. the cell wall would become thicker. d. the vacuoles would quickly shrink.b. the chloroplasts would produce more energy.

Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d