Think of tap water and how all those materials get in it like Fluoride
Antibiotics work by affecting things that bacterial cells have but human cells don't. ... The antibiotic penicillin works by keeping a bacterium from building a cell wall. Bacteria and human cells also differ in the structure of their cell membranes and the machinery they use to build proteins or copy DNA.
Answer:
this helped me in my test hope it helps you
Explanation:
https://youtu.be/oieXYuQm_xE
<span> Objects </span>float higher<span> in salt water </span>than<span> in fresh water. ... Therefore, a floating boat displaces exactly its own weight of water, so it will need to displace less of the denser salt water </span>than<span> it would the less dense fresh water. </span>
A is the answer I would choose :) amos 12kvng
