Which of the following terms best describes the heart's function in a living organism?

A.

a pump

B.

a sponge

C.

a lock

D.

a lever

One of the method used for the manufacturing of steel is the a. Bessemer process b. centrifugation c. destructive distillation d. evaporation e. fractional distillation

How do you find the molecular formula for a compound

Distinguish betwn. Metals s non-metais

From where does the light come that makes the moon visible

Is toasting marshmallows over a campfire a physical or chemical change?

What is the chemical formula of a compound that is composed of the ions Ca2 + and br-

What element is likely to form an ionic compound with chlorine?

Will a parachute slow a skydiver more at a very high altitude or a lower altitude?

Carbon monoxide is: Only found in large cities An odorless, colorless, toxic gas Healthy to breath in A danger when driving on the open highway

What is a potential benefit of fuel cell cars? increased efficiency converting gasoline to energy no recharging necessary decreased automobile cost larger engines