30 !
earth’s original atmosphere was made up of gases similar to those
a. found near the sun and stars
b. found in today’s atmosphere
c. dissolved in salty ocean water
d. released in volcanic eruptions

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt