Q: If air pollution can cause soil acidity to increase, then what can increase soil acidity? Answer choices: - Air pollution - Organic compounds - humans disturb it - cactuses - flooding - deforestation - Pollution - harmful substances
A: Air pollution

Q: If nutrients are required for growth throughout their lives, then what is required for growth through life? Answer choices: - Energy - Energy. - sunlight - heat energy - nutrients - oxygen - incubation - soil
A: nutrients

Q: If carbon may be stored in sandstone for millions of years, then what element may be stored in sandstone for millions of years? Answer choices: - copper - calcium - carbon - chemicals - heat - iron - rock - fossils
A: carbon

Q: If recycling has a positive impact on the environment, then recycling has a positive impact on what? Answer choices: - near the shoreline - plastic properties - coral reefs - the environment - grain yields - important habitats - strawberry yeilds - organic molecules
A: the environment