In a paper on photosynthesis in a desert cactus in which section would you find a review of existing knowledge that is relevant to the experiment?
a. conclustion
b. materials and methods
c. introduction
d. results

The introduction of a paper usually contains the review of existing knowledge of photosynthesis

Option C

Explanation:

Among this the materials and methods contain a protocol of all experiments that are to be done during a study. The results deals with the results we got from the experiment and the discussion deals with the detailed interpretation of the result. Whereas the introduction deals with the previous study that has taken place.

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

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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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