Two species cannot occupy the same niche because
a. one species will be successful and "move up" into another niche.
b. they will compete for food or shelter until one species wins out.
c. the species will interbreed to create a new hybrid species.
d. predators will always kill off one the species.

The friction red blood cells encounter when moving past each other. cardiac output: the amount of friction blood encounters during flow through blood vessels. blood pressure: the force of the blood against the vessel wall. blood viscosity: the volume of blood pumped out by one ventricle each minute.

Select the word from the list that best fits the definition a system made of 25 satellites

Error analysis: what might be the reason that some of your percentages didn't exactly match your predicted results? gametes aren't responsible for inheritance. mice don't have large litters, so the sample size was not large enough. the wrong type of mice were used.