Q: If plants will die without water, then what will plants die without? Answer choices: - acid - energy - phosphorous - pollution - oxygen - photons - water - rain
A: water

Q: If recycling reduces negative impacts on the environment, then how does recycling impact the environment? Answer choices: - has absolutely no impact - makes the environment wetter - Is a negative impact - lowered energy cost - reduces negative impacts - animals with backbones - reducing acid rain - Riding a bike
A: reduces negative impacts

Q: If mammals breathe by relaxing the lungs, then what breathes by relaxing the lungs? Answer choices: - mammals - tortoises - dogs - chickens - ducks - humans - crocodiles - animals
A: mammals

Q: If hitting an object causes the particles in that object to change frequency, then what changes to the particles of an object when hit? Answer choices: - Temperature - frequency - Energy. - volume - molecules - density - energy - heat energy
A: frequency