Carbon dioxide and hydrogen monoxide
I think it might be the first one: hiv infections. (hope this helps!)
Answer is A. It cant be B because they are to close together and it cant be C because some of the seeds are also to close together. Hope this helps!! :)
<span>The cell has 1% concentration of the salt. The external environment is highly concentrated with 25% saline solution. This will lead to release of water outside the cell, by passive diffusion from a region of high conentration of solvent to lower concentration. Thus, the cell will shrink.</span>
D.
The block of wood does not stop moving at any time as shown on the chart, so the answer can't be A. or C. and the speed is not increasing so it can't be B.