Which process usually requires watera. chemical weatheringb. erosion c. physical weathering d. mass wasting

One of the purposes of transcription is to produce a sequence of bases that

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.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above