What is the term for the breakdown of glucose in the presence of oxygen?
o photosynthesis
o
fermentation
o
anaerobic
o
cellular respiration

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -

Why do mountaineers become breathless as they reach high altitudes