(Q).
Q: In how many ways ca a living organism obtain chemical energy Choices: - three - seven - four - two A:
(A).
two

(Q).
Q: What energy source, now making a comeback, has helped propel ships and pump water for many years? Choices: - weather energy - geothermal energy - solar energy - wind energy A:
(A).
wind energy

(Q).
Q: Heterotrophic organisms use organic compounds, usually from other organisms, as a source of what basic element of life? Choices: - oxygen - monoxide - hydrogen - carbon A:
(A).
carbon