Author Question: Volcanic activity in the early history of the Earth is believed to be responsible for much of the ... (Read 71 times)

CQXA · **on:** Jul 16, 2018

Volcanic activity in the early history of the Earth is believed to be responsible for much of the CO2 found in the atmosphere.

Indicate whether this statement is true or false.

Question 2

Approximately 75 percent of the planet's landmasses are covered by sedimentary and sedimentary rocks.

Indicate whether this statement is true or false.