what is the environmental confactor of EBV-II?
What will be an ideal response?
nitrates
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Recall that over the last 400,000 years, atmospheric CO2 levels have fluctuated, with the lowest levels occurring during glacial periods and the highest levels seen during interglacial periods
Why might atmospheric CO2 levels be lower during glacial periods? A. During glacial periods there are more volcanic eruptions. B. During glacial periods there are fewer photosynthesizing plants. C. During glacial periods more carbon is stored in ocean reservoirs. D. During glacial periods chemical weathering stops.
What key words does the question contain and what do they mean?
What will be an ideal response?
If hydrogen bonds between water molecules were weaker than they are today, how would this affect plant height?
a. As hydrogen bonds impede the movement of water through plant vasculature, plants would be able to grow taller. b. As hydrogen bonds are responsible for the movement of water through plant vasculature, plants would be shorter. c. As plants actively transport water through their vasculature, weaker hydrogen bonds would have no effect on plant height. d. As hydrogen bonds cause water to stick to the sides of plant vasculature, plants would be able to grow taller. e. As hydrogen bonds increase the amount of sugar plants can transport through their vasculature, plants would be able to grow taller.
Why are there so many species of living things alive on earth now, more than at any time in earth's history?
What will be an ideal response?