Which is a type of mining that is very dangerous but doesn't disrupt much of the surface? A Surface mining B. Strip mining C. Mountaintop removal D. Long wall mining

Would really appreciate it, i have an idea but not completely sure

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.

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?