Who showed that the basic building blocks for life could have formed from the gases found in Earth's early atmosphere?

Alexander Oparin

Stanley Miller and Harold Urey

Lord Kelvin

John Phillips

How do carbon dioxide and oxygen levels in the oceans compare to those in the air

What are the smallest lava fragments produced by an explosive eruption called?

In general, npp is much higher on land than in the oceans. why?

Which of the following countries is known for its diamond mines? Ethiopia Egypt South Africa Madagascar

About 16% of the world's total oil output comes from what country?

Rocks have been used by humans throughout history for tools weapons and

In the caste system which group of people fit into the Upper Class society

What is the name of the riverthat flows through the center of italy?

Where on Earth are organisms exposed to unusually high amounts of toxins, and why does this occur? a. In the North Pole and South Pole because of prevailing ocean currents, as well as the fact that deposition exceeds evaporation at the poles b.

By looking at the crust, can you tell of it is moving?