Find the Synonyms or Antonyms

Question 1

Some endangered species are being put into unprotected areas.

Accepted Answer

safe

Question 2

The tiny Serengeti Park is home to more than two million rhinos, zebras, and giraffes.

Accepted Answer

enormous

Question 3

Many food chains have a delicate balance and can be easily destroyed.

Accepted Answer

fragile

Question 4

When alien species are brought to a new area, they often crowd out native species.

Accepted Answer

foreign

Question 5

Manatees are water mammals that have become numerous because many are killed or injured.

Accepted Answer

rare

Question 6

Environmentalists have created desert reserves in order to protect the manatees.

Accepted Answer

marine

Question 7

Scientists fear the destruction of plants will deprive humans of remedies for diseases.

Accepted Answer

cures

Question 8

Wildlife refuges often have problems because they are over-funded.

Accepted Answer

underfunded

Question 9

When rabbits were brought to Australia, their numbers increased until they killed off crops.

Accepted Answer

grew

Question 10

Plant-eating dinosaurs were often eaten by carnivores.

Accepted Answer

meat eaters

Question 11

Today people who are concerned about the environment strive to protect endangered species

Accepted Answer

try

Question 12

Human activities often destroy the habitats of animals.

Accepted Answer

homes

Question 13

If a single oak tree is cut down, 280 species may be affected because they are linked.

Accepted Answer

connected

Question 14

Some species died out because of natural causes.

Accepted Answer

kinds

Question 15

If owls die out because trees are cut down, the animals on which owls prey grow more numerous.

Accepted Answer

feed

Question 16

Many species of animals and plants are no longer on Earth: they have become extinct.

Accepted Answer

nonexistent

Question 17

Rain forests harbor millions of animal and plant species.

Accepted Answer

shelter

Question 18

Today, many species of animals are endangered.

Accepted Answer

imperiled

Question 19

The government of India set up Operation Tiger to help people hunt the tigers.

Accepted Answer

protect

Question 20

Meteorological factors, such as periods of drought or severe cold, caused extinction.

Accepted Answer

climate

Questions 20