Plz will give ten points! and brainliest!
which of the following was most likely not present in creating the amino acids of early earth's waters of the past?

1. sulfur

2. nitrogen

3. hydrogen

4. ammonia

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.

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

What will happen to the amount of food available as a pondwater ecosystem ages