Positron emission tomography (PET) is a test that uses a special type of camera and a tracer (radioactive chemical) to look at organs in the body. The tracer usually is a special form of a substance (such as glucose) that collects in cells that are using a lot of energy, such as cancer cells.
Embryogenesis is the process by which the embryo forms and develops.
The right answer for the question that is being asked and shown above is that: Aerobic Respiration by definition is<span> the process of producing cellular energy involving oxygen. If </span><span>the aerobic respiration process broke down in a tropical rain forest, then the tropical rain forest cannot produce foods.</span>
Answer:
B. Oxygen
Explanation:
Trees release oxygen as a byproduct of photosynthesis, so once the trees are uprooted, they will no longer execute photosynthesis and thus no oxygen would be released by the dead trees.