If the material for life were introduced from space after the Earth formed, a major carrierwould have been:
A)the solar wind.
B)tektites from the Moon.
C)comet impacts.
D)encounters with other solar systems.
E)iron meteorites.

Question

Quizplus · Accepted Answer

Comets contain organic compounds such as amino acids, which are the building blocks for life. The impact of comets on Earth could have introduced these organic compounds to the early Earth, providing a major carrier for the material for life. Comets contain organic molecules, including amino acids, that could potentially serve as building blocks for life. It is theorized that cosmic impacts of comets could have delivered these materials to Earth.

If the Material for Life Were Introduced from Space After