Answer the following questions true (T) or false (F)
1. Respiration is the only major process through which carbon moves from organic molecules back to the atmosphere.
2. Atmospheric N2 is useless to plants.
3. Too much nutrient runoff, particularly from nitrogen fertilizers, can cause dead zones in bodies of water.
1. FALSE
2. TRUE
3. TRUE
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Complement helps in the defense against bacterial invasion by:
A. promoting phagocytosis. B. neutralizing bacterial toxins. C. preventing bacteria from penetrating the skin. D. fusing lysosomal granules to bacterial cell walls.
Why are lichens generally absent in cities?
A. They are sensitive to pollution. B. They need more light. C. They are sensitive to the high noise levels. D. They are aquatic organisms. E. They need other plants around them.
Yeast infection is another name for
What will be an ideal response?
During which of these eras were dinosaurs dominant?
A) Mesozoic B) Cenozoic C) Precambrian D) Paleozoic