Use this diagram of an animal cell to answer the question Where does the second stage of cellular respiration occur?

1) w

2) x

3) y

4) z

oh and by the way the answer IS NOT z i have already tried that and i got it wrong.

Why do we perceive objects as retaining their brightness under different lighting levels?

Cancer cells spread to other parts of the body by entering the bloodstream. which of the following organs could prevent a cancer cell in the bloodstream from spreading, and why? a. the spleen, because it releases lymphocytes into the blood b. the peyer's patches, because they release lymphocytes into the blood c. the lymph nodes, because they release lymph into the blood d. the thymus, because it releases lymph into the blood

The rate of speciation is most likely to increase when