Which of the following best completes this example of heat transfer by convection? As a pot of water is heated over an open flame, heat is transferred from

a. The pot’s handle to your hand.
b. The flame to the bottom of the pot.
c. The bottom of the water to the top of the water.
d. The hot water to a metal spoon used for stirring

Heat transfer by convection from the bottom of the water to the top of the water.

Explanation:

Convection takes place in case of liquids. In case of liquids the molecules of water are very loosely packed. Convection takes place in a circular form. When the liquid is heated up the water vapor goes up the cold water come to take the empty places , this way convection takes place. In this question , when the water is heated first the bottom of the water gets heated up and gradually the water at the top becomes hot.

answer: dinosaur

explanation

their extinction was caused by massive asteroid that fell on earth

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.