The absolute age of a rock is expressed with

a. geologic symbols.

b. Roman numerals.

c. concrete numbers.

d. date ranges.

Briefly describe three of the theories scientists have proposed to explain natural climate changes.

Which of Earth's layers is comprised mainly of extremely hot liquid metals

What city is located at 51n and 0w

What state borders montana idaho utah colorado nebraska and south dakota?

What would happen if a 1-kilometer object struck the earth?

What is the main reason water from the ocean turns to what're vapor, and than evaporates into the air? A. ocean breezes B. changing tides C. heat front the sun D. moons gravitational pull

What could cause an igneous rock to become soil? a. Increased temperature and pressure c. Exposure and weathering b. Melting and crystallization d. All of the above

One knot is equal to one nautical mile. a. True b. False

Which country has the lowest population growth Germany Italy Sweden United States

This body of water flows north instead of south. It is west of Saudi Arabia and was one of the centers of early civilization