Which physical system includes the constantly moving layer of gases, or blanket of air, that surrounds the planet's surface.

a) atmosphere

b) lithosphere

c) hydrosphere

d) biosphere

Fishing is an important natural resource to this country, the only country in South America with coastlines on both the Pacific Ocean and the Caribbean Sea. Argentina Brazil Ecuador Colombia

Qual a espessura da camada de ozonio

If an isotope has a half-life of 50 million years and an 1/8 of the sample remaining consists of that isotope, the age of the rock from which it was taken is:

Thin layer of rock on earth's surface

What is to temporarily move people away from danger?

Which part of africa is dominated by congo river

What is an ecosystem?

Which region consists of a central place and the surrounding places affected by it?

Which statement about the economy of France is not true? Paris is a major manufacturing center. Marseille is a busy seaport on the Mediterranean coast. Farming is the major activity in the Alps. World-famous wines are produced in the Bordeaux region.

What is agreed upon by scientist as the most likely cause of the final extinction for the dinosaurs?