(Q).
If aneutral atom that loses an electron will be attracted to positive charges?, then what can be done to a neutral atom to make positive charges attractive to it? Answer choices: - Remove an electron - It gets heated up - Cool the atom - flow of electrons - Inject hormones - Accelerate the atom - adding heat - electrically
(A).
Remove an electron

(Q).
If vibrations in air can be used for communication by animals, then vibrations in air can be used for what by animals? Answer choices: - activation energy - communication - Something to move - sleeping - sustenance - Heart rate - food and shelter - tasting
(A).
communication

(Q).
If using a car requires burning gasoline, then what does using a car require? Answer choices: - Burning gasoline - Burning wood - Electrical energy - a hydraulic system - Driving a boat - Burning tires - Time and energy - hydrogen and oxygen
(A).
Burning gasoline