Compared to the right ventricle, the left ventricle has all the following characteristics except that it
a) pumps a greater volume.
b) contracts harder.
c) has a thicker wall.
d) is round in cross section.
e) produces about four to six times more pressure when it contracts.

Assume that a student is given two different models of bacteria, with one model consisting of big bacteria and the other consisting of small bacteria. how can the student demonstate the theory of endosymbiosis using the models

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.