Which of the following samples has the greatest population density? fast plz 20 pt a. 125,000 organisms in 2.5 ² b. 13,000 organisms in 1.0 mi² c. 150,000 organisms in 4.0 mi ² d. 100,000 organisms in 0.5 mi²

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.

How energy move through ecosystem ?

The ultimate purpose of respiration: a. inhale 02 and exhale co2 b. place oxygen in the lungs c. place oxygen in the blood d. deliver oxygen to every blood cell