Which activates a convection current, starting the flow of a fluid?

A. Cold temperatures at the North Pole

B. Heated liquids at earth's surface

C. iron-rich rocks in the mantle

D. temperature differences in the mantle

What type of cells do scientists look at

a packaging designer wants to find out how much leather is needed to cover. the jewelry box below the bix is 12 cm long, 3 cm wide, 5 cm high find the surface area of the box

Which of the following rates measures how many children are being born in a country (in relation to the size of its population) ? A. birth rate B. migration rate C. urbanization rate D. death rate

This tool uses microwaves to map the earth and is useful when climate conditions prevent geographers from seeing the earth's surface

Australia produces more of which of these than any other country in the world

Describe why a "permanent underclass" has developed in many cities, and the problems that result.

What is a disconformity? A. an intrusion that runs between rock layers B. an intrusion that cuts across another rock C. when a sedimentary rock is deposited on top of an eroded non-sedimentary rock D.

What is the action of unearthing something, especially at an archaeological site

What type of damages can you cause while driving

Which of these is an environmental consequence of the shrinking of the Aral Sea? A. The salt content of the water has increased. B. More nesting birds have come to its beaches. C. Fish populations have increased to unhealthy levels. D.