What happened around 800 million years after Earth formed to allow rocks to

form?

O

A. Life began to appear.

O

B. The sun dimmed considerably.

D

C. Earth cooled sufficiently.

D. The ozone layer formed.

When referring to the United States, "the South" is a

How did warfare affect the civilizations of greece rome and the vikings

The medditirarian sea is the worlds smallest inland sea

Which of the folowing statements about europes most important industries is false

What conditions occur in Australia during El Nino

Describe what Scotland, Wales, and Ireland have done to maintain their unique cultures. Be sure to describe at least two examples for each country.

Why is most of Australia Unsuitable for agriculture A. the land is too dry. B. the soil is made up of clay C. the soil is made up of Volcanic ash. D. the terrain is too mountainous and rugged.

Which type of skin cancer decelopes

What occurs when the atmosphere is cooler than the geosphere

The process by which gases within Earth are emitted and eventually accumulate into an atmosphere is called o a. degassing O b. volcanic fumaroles C. ungassing O d. outgassing O e. none of the above