The two primary factors that normally determine the level of blood pressure are:
a. the blood concentration of l-nmma and norepinephrine.
b. the cardiac output and the resistance to blood flow.
c. the blood volume and the amount of l-arginine in the diet.
d. the heart rate (heartbeats/minute) and the cardiac stroke volume.

Select the correct answer.which scenario describes unethical lab behavior? o a. danny stores the chemicals required for his experiment in flasks and beakers.b.anna publishes the results of her experiment on the growth rate of saplings.c.jason repeatedly runs an experiment until he gets the results he desires.d. mia records her observations of an experiment precisely and accurately.

Which of the following statements about c4 carbon fixation is not true? a c4 carbon fixation is an adaptation for plants exposed to high light intensityb. c4 carbon fixation occurs in more plants than c3 carbon fixation.c c4 carbon fixation is more common in areas of high temperatures than c3 carbon fixation.d. c4 carbon fixation occurs in the inner cells of a leaf rather than the entire leaf.

How does human environment effect the biosphere