If the student then shined a light on the Elodea plant, then let it sit under the light for 24 more hours, how would the sugar concentration in the plant be effected?

The rate of photosynthesis in Elodea depends on the intensity of light. With increasing water pollution levels light that reaches aquatic plants such as Elodea significantly decreases thus leading to lesser light intensity underwater

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Explanation:

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

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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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