If hiv first enters the cell in an endocytotic vesicle, instead of directly fusing with the plasma membrane, then

When analyzing tree rings, what do scientists assume a thin ring indicates?

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

Which event would lead to primary succession of a forest?