List four ways in which viruses can be similar or differ from each other.

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.

All ova contain sex chromosomes corresponding to: x y xx xy

Which of these is evidence of global warming? a. overall rising seal levels b. falling global temperatures c. an increase in the size of glaciers d. stable precipitation patterns appex