48:47 Which of the following factors would have the smallest impact on a population’s size?
a.
the total number of organisms
b.
the available water supply
c.
the variety of organisms
d.
adequate shelter

Describe the function of the endomembrane system? what organelles are involved?

Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells

Which of the following cognitive skills have not been displayed by animals? a. using tools b. forming concepts c. transmitting culture d. using syntax