What is an example of the effect of environmental factors on cell differentiation? A. The plant hormones known as auxins stimulate cell elongation in roots and stems.
B. The sex of turtles is determined by temperatures in the nest during incubation
C. The kidneys release more urine in response to an increase in blood pressure.
D. The menstrual cycle is controlled by the hormones estrogen and progesterone.

Average annual precipitation and are the two major features that define the biomes on earth.

Why are carbon dioxide concentrations expected to increase? a carbon dioxide concentrations are expected to increase, because fossil fuel burning is expected to increase b. carbon dioxide concentrations are expected to increase, because of an increase in agriculture. c.carbon dioxide concentrations are expected to increase, because more land will have to be cleared for increasing populations and agricultural use. d. all of the above select the best answer from the choices provided mark this and return save and exit next submit submit

During photosynthesis, hydrogen ions are most directly used to in the chloroplast pictured above. a) make glucose b) make chlorophyll c) produce carbon dioxide d) drive the production of atp