Your friend uses a wire coil to model how a sound wave moves. What is an advantage to using the spring coil as a model?

The model can be observed from the classroom more easily. lol

Explanation:

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the correct answer is:

a population changes in response to a change in the environment.

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.