Produces four
of which is heploid
Color change, gas released, volume change, temp change
The electron has a negative charge.
The answer is actually none of the above. The Devonian Period allowed for amphibians to evolve, as well as terrestrial vertebrate. Forests grew to cover most of the continent. All of these events happened in the Devonian Period.
The answer is D. Run only full loads in the washing machine and dishwasher.
B doesn't seem like a good idea, C uses more water, and A would save water but not as much as the washing machine and dishwater use.