How can a person donate blood and never run out of it?
a.
blood components are continuously pumped by the heart.

b. blood components are continuously circulated through the blood vessels.

c. blood components are continuously produced in the bone marrow.

d. blood components are continuously digested by enzymes.

Which process must a cell undergo top identical cells at the end of cell division

4.06 hc)a five-year review of threats to the southern resident orca population of the united states concluded that the top threats were prey availability, contaminants, and effects from recreational and whale watching vessels. further down the list are oil spills, disease, and effects from commercial vessels not targeting whales. how might this list be different if it were for transient whale populations, which have a larger average population size and live farther offshore in open waters? a)the transient population is more likely to be affected by contaminants. b)the transient population is less likely to be affected by whale watching vessels. c)the transient population is more likely to be affected by disease. d)the transient population is less likely to be affected by prey availability.

Match the types of competition to their descriptions