Epithelial cells also carry out active transport.
Hope this helps.
~Jurgen
Answer:
B. Air moves towards the poles as it cools
Explanation:
The image represent convection cell or Hadley cell is a natural phenomenon in the atmosphere that occur due to difference in the density within a body of liquid or gas. These differences in density causes rise and fall in currents.
The process in step A refers to when hot air moves up and in the step B, the hot air encounters a cold surface, it direct exchange the heat with cold surface and the air cools down and move towards the poles.
Hence, the correct answer is "B. Air moves towards the poles as it cools".
Answer:
The Phosphorus Cycle, in contrast to the other cycles, does not include a gas stage and only takes place in land and water environments - not in the atmosphere.
Explanation:
The Phosphorus Cycle is a biogeochemical cycle in which <em>phosphorus</em>, a chemical element, <em>circulates around the lithosphere, hydrosphere, and the biosphere.</em> This indicates that, <u>in contrast to the Water, Carbon, and Nitrogen Cycles, this cycle does not include a gas stage and only takes place in land and water environments.</u>
The Water, Carbon, and Nitrogen Cycles, on the other hand, are biogeochemical cycles in which their chemical elements also circulate around land and water but, in contrast to phosphorus, they move around the atmosphere.
B. To study the physical world.
This seems like a more reasonable answer then the other ones.
Large molecules, such as glucose, cross the cell membrane by means of protein channels, in a process known as facilitated diffusion.
