What two biological processes contribute significantly to the cycling of carbon?

Whats the answer to life and everything else?

Which part of the rock cycle can only occur because of thermal convection

A line has measurable length. True E False

describe what the light on the moon would look like from Earth as it goes from a new moon to a full moon.

What is the name for elevation difference between two adjacent contour lines

Which of these locations is the largest desert in the world?

If you are given with a soft metallic samples for example lead, magnesium, Tin, Aluminium etc. and you are given options to either use the Rockwell test or the Brinell test for measuring their hardnesses.

What event did most Americans blame Spain for the cause of the Spanish American War? A. the assassination of President McKinley B. the sinking of the American fleet in Manila Bay C. the explosion that sunk the USS Maine D. the high cost of sugar

Which volcano erupted in the Pacific Northwest in 1980? A. Mount Rainier B. Mount Vesuvius C. Mount Pinatubo D. Mount Saint Helens

Which colonizing country settled throughout South America and what became the southwestern United States?