n. a
hard substance that forms on the bottom of the sea from the bones of very
small creatures
coral
n. dangerous materials that make the air, water, and soil bad
pollution
n. an
area that is divided from other areas
zone
v. to be no longer seen
disappear
n. something that is valuable to a country or person
resource
What must you do everyday?
answers vary
n. a sea
animal that has 8 arms, 2 tentacles, and a long body
squid
n. a
material made from chemicals that is light and strong
plastic
n. a group of animals living together in a specific place
colony
adj. unknown, hard to explain
mysterious
n. the faint light in the sky when the sun is below the horizon before sunrise
twilight
adj. something that is destroyed naturally without any treatment
biodegradable
n. an amount or piece of a substance that covers a surface or that is between two other things
layer
n. trash, waste, something thrown away
garbage
What do you have to do after school?
answers vary
Choose one: We must / can't recycle our bottles
must
an accident which releases oil into the environment
oil spill
What can't you do before breakfast?
answers vary
What must you NOT do in school?
answers vary
Choose one: People have to / must not fish in the river.
must not
n. twelve o'clock at night
midnight
n. catching too many fish in an area
overfishing
What must you NOT do in the library
answers vary
Choose one: You must / can't use your phone in the movie theater.
can't
n. one
of the long, thin parts of some sea animals, similar to a squid's arms
tentacle
Choose one: Everyone has to / can't pick up their trash.
has to
What do you have to do tomorrow?
answers vary
adj. letting light pass through and giving a clear view of objects on the other side
transparent
v. a living person or animal
creature
n. a small sea animal that looks like a tube
polyp