Why are the ideas that Earth undergoes change and is billions of years old
important for evolutionary theory?

Evolution often happens over long periods of time. The fact that Earth can change over time inspired the idea that organisms can also change. Earth's great age makes it possible for significant changes to have occurred.

Explanation:

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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