How many structures do prokaryotic cells have in common with the eukaryotic cells?

What word is used to describe differences of individual organisms

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.

In which state was more than 100 billion tons of coal mined in 2005?