How does the atmosphere protect life on earth? check all that apply.

it provides oxygen for living things.
it prevents earth from being hit by meteoroids.
it allows water to exist as a liquid.
it purifies water that falls as snow and rain.
it blocks the sun’s harmful rays.

Which pair of sentences is describing the same velocity? a. a car is parked. a car is moving in circles. b. a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c. a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d. valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.