Answer:
Did alleles for drug resistance occur in bacterial populations that afflict humans, prior to the widespread use of antibiotics in medicine and agriculture? a. No—mutations for drug resistance occur in response to antibiotic use. ... Yes—alleles for resistance arise due to random mutation, so are always present.
Explanation:
Please show that answer choices like what does a say
Transportation is the cells way of brining in and expelling molecules, ions, et cetera. This is useful because a cell can receive what it needs at all times via transport but also have the ability to rid the cell of unnecessary molecules that aren't needed.
Answer:
Arteries
Explanation:
the heart is like the main machine but arteries carry the blood throughout the body