Which words describe the composition of the inner planets (need three)

The inner planets ( mercury , venus ,earth and mars ) are closer to the sun, hence, the lighter substances such as hydrogen evaporated away. The remaining composition of the planets resulted in the formation of rocky, mountainous surface of the planets. Thus , gaining the name as ''TERRESTRIAL PLANETS ''.

Explanation:

here you go g

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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plz give me brainliest!

the answer is c. baby boomers are the largest generation and have already begun reaching retirement age.

that is the the answer on e20 , brainliest ? ?