If chemical weathering of iron in rock causes rust, then rust of iron in rocks is a direct result of? Answer choices: - solar heating - high speed fall from space - Chemical energy - The area was once underwater - permineralization - Temperature - volcanic ejection - chemical weathering
chemical weathering

(Question)
If electrical power in a circuit works properly when it runs through the circuit, then electrical power does what when it runs through the circuit? Answer choices: - lowered energy cost - works properly - get started - power failure - breaks down - powers off - to move people - heat energy
(Answer)
works properly

Ques: If pressure,heat and,cold points on skin, then the skin has points on it to feel what? Answer choices: - staying warm - Temperature changing - electromagnetic energy - pressure heat and cold - preventing heat transfer - light and dark - vibrational shifts - emotions
Ans: pressure heat and cold

(Q).
If acavern is formed by carbon dioxide is in groundwater seeping through rock and dissolving limestone, then what forms caverns by seeping through rock and dissolving limestone? Answer choices: - pure oxygen - Something with a head, thorax, and abdomen - basic building blocks of life - carbon dioxide in groundwater - magma in groundwater - oxygen in groundwater - At the peak of a mountain - underground systems
(A).
carbon dioxide in groundwater

Ques: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

Ans:Burning gasoline

Ques: If water can change the speed of light, then what aspect of light changes when it enters water? Answer choices: - Energy. - speed - kinetic - seasons - reacts - energy - heat - mostly
Ans:
speed