Coal burning produces as much electricity as:

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added