Where does the oxygen that is used during cellular respiration in animals come from?
A. ATP molecules in a mitochondrion
B. Air that is breathed in
C. Water molecules in a cell's cytoplasm
D. Carbon dioxide molecules in food and drink

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.

As an asteroid comes close to earth, it's name will change to? apex

Based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ?