Who is they referred in the following quotation? they also established a number system based on six, diving the hour into 60 minutes and the circle into 360 degrees, as we still do today.
a. the akkadians
b. the sumerians
c. the babylonians
d. the assyrians

What is the importantence of the carbon and nitretan cycles in the environment

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.

What is it called when part of a cell membrane closes around a molecule to allow the molecule to enter the cell? a. passive transport b.diffusion c. endocytosis d. exocytosisc. endocytosis