Q: If less garbage is better for the environment, then what effect would less garbage have on the environment? Answer choices: - It decreases - lowered energy cost - an unknown effect - no effect - protect them - a better effect - reduced heat - a worse effect
A: a better effect

Q: If the power of wind and water can cause a river to deepen and widen, then what can make a river deepen and widen? Answer choices: - birds - sunlight - Sediment - wind and water - rainfall - flooding - weeds - arteries
A: wind and water

Q: If ears are used for sensing sound by animals, then what are used for sensing sounds by animals? Answer choices: - ears - echolocation - birds - fibers - toads - the nose - Frogs. - the blood
A: ears

Q: If adecay curve is used to determine the age of fossils, then what is used to determine the age of fossils? Answer choices: - Calcium carbonate - dinosaurs - a barometer - electron microscope - a thermometer - a decay curve - chemical equations - Physical weathering
A: a decay curve