HELP PLEASEE . !! with photosynthesis

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

Eutrophication caused by human nutrient pollution.