The rate of h+ secretion by the nephron is:
1. facilitated by the phosphate buffering system
2. increased in response to increased aldosterone secretion
3. inversely proportional to the rate of hco3, reabsorption
4. decreased by carbonic anhydrase inhibitors.
a.1, 2 and 4
b. 1, 2 and 3
c.1, 3 and 4
d. 1 and 2

answer: no, they are not.*

although rubber bands that contain excessive amounts of dye, toxins, or additives are sometimes toxic, most rubber bands do not cause any health issues. since they are typically made of latex, (a natural substance that is extracted from trees) they are not dangerous in any way if you chew them or accidentally ingest a piece of rubber band. however, chewing rubber bands does pose a choking hazard and is not a good habit to have.

*depending on the type of rubber band. the typical rubber bands that you see at stores are not toxic, but other types of rubber or latex that contains certain chemicals may be unhealthy and hazardous.

answer:

None of them! It's just a virus.

Explanation:

Virus is an infective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host.

It's the removal of breast.