This graph shows the change in atmospheric carbon dioxide levels i. parts per million (ppm) from 1997 through 2003. Carbon dioxide levels fluctuate naturally from season to season as varying levels of photosynthesis activity capture carbon dioxide from the atmosphere and turn it into plant biomass. Which hotspot on the graph represents a sample taken during the late spring in the Northern Hemisphere, when levels of photosynthesis are about to increase during the summer months?

lipid

explanation:

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.