Explain how the ability to describe the pattern of ice ages over the past million years helps us to assess what is a
"normal" variation in Earth's atmosphere.

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.

i hope this you

d. planting trees

the trees take in carbon to make oxygen.