Help me? I don’t really know how to do this stuff, so please help me?

Which codon is the code for the amino acid histidine (his)?

What is the name for a substance formed in a chemical reaction

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.