Where does most of the energy we use at home/our cars come from?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

An object has a weight of 500 on earth what is the mass of this object

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?