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

cold temperatures at the north pole

iron-rich rocks in the mantle

heated liquids at Earth's surface

temperature differences in the mantle

He two letters that refer to an organism's genetic makeup is the

What difference between dicot and gymnosperm

An ambulance is rushing a man to the emergency room with a knife wound. the man was stabbed in the upper-right side of his abdomen and has a large amount of internal bleeding. what vital organ has most likely been damaged by the knife wound?

Why do different instruments have different sound qualities?

Which action would most likely increase the amount of carbon in the environment? A. cutting down most of the trees in a forest to make furniture B. using energy-efficient appliances in place of older, traditional appliances C.

If a bird is moving at a velocity of 70 km/h east and a car is moving at a velocity of 80 km/h east, what is the velocity of the bird relative to the passengers in the car? A. 10 km B. 10 km/h C. 10 km/h west D. 70 km/h east

Does bigfoot exist?

An observable trait in a species of frog is controlled by a single gene. The gene has only two alleles, F and f, and F shows complete dominance over f. A predator is introduced into a population of 400 frogs, of which 100 are homozygous recessive.

The area in the brain that plans, anticipates, and controls impulses and is the last part of the brain to mature is the

What event occurs prior to speciation