One of the oldest forms of energy used by humans can be used to produce what?
food engines waves chemicals Decibels sound energy hormones
A B C D E F G H
Tidal energy is one of the oldest forms of energy used by humans.
One of the oldest forms of energy used by humans can be used to produce electricity.
One of the oldest forms of energy used by humans can be used to produce what? (A) food (B) engines (C) waves (D) chemicals (E) Decibels (F) sound (G) energy (H) hormones