The answer is B . two atoms exchange electrons and become ions
<span>An amphibian that lacks lungs and breathes entirely through its skin would have to be smaller than an amphibian with lungs so that the small oxygen intake correlates with
the small surface area of the amphibian. This would then allow it to breath efficiently.</span>
Bacteria can replicate themselves.
If you have 3 big circles in a graph the inside being organs the middle being tissues and the outer being cells. It would be#4. Hope this helps