For about the last ________ years, Earth has had about the same balance of chemical components that now persists

A) 10,000
B) 100,000
C) 1 million
D) 500 million
E) 1 billion


Answer: E

Environmental & Atmospheric Sciences

You might also like to view...

No city on the northern coast of Australia has a population of more than one million

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Volcanoes are found at these two types of plate boundaries: ____________________ and

____________________. Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

The earth emits terrestrial radiation:

A) all the time. B) only over the continents. C) only at night. D) only during winter. E) only during the day.

Environmental & Atmospheric Sciences

Which of the following enzymes controls the rate of cholesterol synthesis?

A) cholesterase B) HMG oxidase C) HMG CoA reductase D) mevalonate decarboxylase

Environmental & Atmospheric Sciences