If wind can be a requirement for plants to reproduce, then what can be required for plants to reproduce? Answer choices: - Light - seeds - bees - pH - lipids - wind - energy - sugar
wind

If carbon dioxide is controlled between organisms and the atmosphere, then what is controlled between organisms and the atmosphere? Answer choices: - carbon dioxide - sweating - temperature - air pressure - heat energy - Pollution - energy usage - Chemical energy
carbon dioxide

If rivers cut deeper and wider to form canyons, then rivers cut deeper and wider to form what? Answer choices: - canyons - arteries - Roads - timberlands - old growth forests - soils - Sediment - coral reefs
canyons