Find the complementary DNA strand of
this sequence of DNA: TAC AAG GGC CCG

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

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.

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?