Today's Rocket Words: Your 5 words and meanings to learn
pollution
anything that makes the earth dirty and unhealthy
residue
whatever remains after a part is taken, set apart, or lost
blockage
an obstruction
compost
a term that is used when someone controls the decomposition (breakdown) of natural waste, organic solid wastes
manhole
a covered hole (as in a street) large enough to let a person pass through