WW7 Lesson 10 Review Exercise

aquatic

Manatees, seals, dolphins, and whales have something in common. They are all ___ mammals

ponderous

Manatees are among the largest of marine mammals. These __ creatures can grow to twelve feet and weigh up to 3000 pounds

docile

Manatees present no threat to humans. In fact, these ___ creatures seem to enjoy the company of humans

dwindle

The number of boats on Florida's coastal waters continues to increase. There is no prospect that the number of boats will ___ in the future

verge

Boating is important to Florida's economy. However, the claim that boats and manatees con coexist safely ___ on the ridiculous

lethal

Collisions are common between boats and manatees. These encounters are often ___ for the manatee

averted

The harm comes from contact with the boat's propellers. These collisions could be ___ if motor boaters were more careful

mutilated

A third of all manatee deaths are boat-related. In as many as nine out of ten of those deaths, the manatee was ___ by boat propellers

nimble

Manatees feed just below the surface. These slow-moving creatures are not ___ enough to avoid collisions

assert

Many scientists doubt the ability of the manatee to survive. Some even ___ that these creatures could one day become extinct.

vigilant

A close watch is kept on the manatee population in Florida. Authorities are ___ about tracking and counting them.

plight

Congress stepped in to save the manatees. The Marine Mammal protection Act was passed to lessen their ___

bleak

To save the manatees, boaters must treat their survival as a matter of urgency. Unless this happens, the manatee faces a ___ future

monitor

Boaters have a responsibility to the manatees. They need to ___ their behavior carefully when operating where manatees are present

blithe

In the past, boaters were indifferent to the presence of manatees. They need to take a less ___ approach in the future