Answer: i think its B or C
Answer:
The movement of ions or molecules across a cell membrane into a region of higher concentration
<span>When the surface layer was dug up, the permafrost was exposed. When the weather warmed, this exposed permafrost would have melted and become soggy, causing the ground underneath the tracks to shift.</span>
The Incubator made it possible to maintain a controlled environment for cell cultures because most modern incubators act as a petri dish but in a more controlled state.
Yes. My teacher said that this is a true fact.
I really do hope this helps!
