Answer:
<em><u>Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.</u></em>
Explanation:
Answer:
elliptical
Explanation: its almost an oval shape. idk why
Answer: Because they have built up immunity from past medications.
Explanation: As people get sick and are given antibiotics the 99.9 % are removed but that one percent from the bacteria is able to overcome the antibiotics and make itself stronger and immune to the medicines, then the bacteria evolves and a new person will get infected and will need stronger antibiotics further more the cycle is repeated.
Answer:
Stream running down a mountain; the water flows over rocks and trees. ... river—complete the hydrologic cycle by returning precipitation that falls on land to the oceans
Explanation:
