Use the Tense Given
Coral reefs (present tense of surround) Hawaii.
surround
Human activity (past tense of pollute) waters.
polluted
Sea exploration technology will change every year.
Sea exploration technology changes every year.
My brother and sister knows how to sail a boat.
My brother and sister know how to sail a boat.
Gray wolves (will be; were) a topic of debate soon.
will be
Many coral animals (past tense of create) coral reefs.
created
Many people (present tense of worry) about the health of coral animals.
worry
Scientists learned more about sea life.
Scientists learn more about sea life.
Tourists collects shells along the seashore.
Tourists collect shells along the seashore.
Gray wolves (will prowl; prowled) the West for centuries.
prowled
Scientists (past tense of study) life in the coral reef.
studied
Some coastal areas (future tense of be) off limits.
will be
Scientists capture some sea creatures.
Sea turtles hatches on the beach and crawl to the water.
Sea turtles hatch on the beach and crawl to the water.
Long ago, wolves sometimes (will kill, killed) settlers' livestock.
killed
Reefs (present tense of provide) fish with food.
provide
These protected areas (future tense of grow) in number.
will grow
No sunlight reached the deepest parts of the ocean.
No sunlight reaches the deepest parts of the ocean.
One of the turtles crawl the wrong way.
One of the turtles crawls the wrong way.
Wolves once (will hunt; hunted) coyotes in the West.
hunted
They also (present tense of protect) fish from predators.
protect
These areas (present tense of serve) as popular tourist attractions.
serve
Some sea creatures were on display in aquariums.
Some sea creatures are on display in aquariums.
These turtles swim at night.
Correct
Coyotes (will grow; grew) in number now that the wolves are gone.
will grow