Which of the following would be a good reason to use a more efficient gas heater

a. more chemical energy from gas will be changed into potential energy

b. convection currents will be able to carry more heat caused by friction

c. less conduction will occur between the gas and air particles

d. less non-renewable gas will be used to produce heat

if your not sure dont comment because this is a test

d.less non-renewable gas will be used to produce heat

Explanation:

Gas heaters most often use naturally occurring, non-renewable gas as a source of power.

Efficient gas heaters use less gas to generate maximum heat as compared to non or less efficient gas heaters.

Hence, efficient  gas heaters will ensure that less non-renewable gas that serves as a source of power is used to produce heat, thereby prolonging the life span of the natural reserve of the gas.

The correct option is d.

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.