There are more hydrogen atoms in living organisms than any other atom, but oxygen is more abundant in terms of mass. why is this statement true?

The endoplasmic reticulum (er) is an organelle in some cells. in these cells, it is continuous with the nuclear membrane and forms a large part of the cell\'s total membrane. sort the phrases below as describing rough er, smooth er, both, or neither. note: if you answer any part of this question incorrectly, a single red x will appear indicating that one or more of the phrases are sorted incorrectly.1) found in prokaryites and uekaryotys2) involved in protein synthesis3) involve in lipid synthesis4) contains molecular chaperones in lumen5) bound with ribosomes6) involved in toxin or drug metabolism7) large systemot internnected tubules,vesicles, and sacs8) "packages" enzymes in vesicles for secretion.

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.