Question: If exposure to air pollution can harm the lungs, then which type of pollution is most harmful to lungs? Answer choices: - Lead - air - Cars - oil - acid - CFCs - SO2 - mold
Answer: air

Question: If mutation in a gene pool is the raw material for evolution, then mutation in a gene pool is the raw material for what? Answer choices: - Most plants - animals - large litters - competition - Plants growth - many offspring - evolution - twins
Answer: evolution

Question: If an object's weight is what pulls objects towards planets, then what about an object can cause objects to be pulled towards planets? Answer choices: - phase - structure - Energy. - means - wind - energy - weight - sunlight
Answer:
weight