Complete the sentence with the correct word.
1. Sea ___________ are hunted for their shells and meat.
whale
turtles
squid
mammals
tusks
Complete the sentence with the correct word.
1. Sea ___________ are hunted for their shells and meat.
whale
turtles
squid
mammals
tusks
Complete the sentence with the correct word.
2. Elephants are killed for their ivory ___________ .
whale
turtles
squid
mammals
tusks
Complete the sentence with the correct word.
3. A ___________ is a sea mollusc with ten arms that is typically able to change colours.
whale
turtles
squid
mammals
tusks
Complete the sentence with the correct word.
4. A young ___________ is called a calf.
whale
turtles
squid
mammals
tusks
Complete the sentence with the correct word.
5. The first small ___________ evolved from reptiles about 200 million years ago.
whale
turtles
squid
mammals
tusks
Complete the sentence with the correct word.
6. Today coastal waters are become very ___________ and whales and dolphins are killed in great number.
habitat
extinct
ecology
recycled
polluted
Complete the sentence with the correct word.
7. Forests produce ___________ .
habitat
oxygen
recycled
ecology
extinct
Complete the sentence with the correct word.
8. Dinosaurs and trilobites are already ___________ .
habitat
polluted
extinct
recycled
ecology
Complete the sentence with the correct word.
9. Office paper, tyres and telephone books can be ___________.
habitat
extinct
ecology
polluted
recycled
Complete the sentence with the correct word.
10. ___________ is the study of the interaction of people with their environment.
habitat
ecology
extinct
polluted
recycled
Fill in the gaps with the right tenses of the verbs in brackets.
If we __________ (to keep) our environment clean, we _____________(to help) to stop pollution.
keep, stop
will keep, will stop
will keep, stop
keep, will stop
Fill in the gaps with the right tenses of the verbs in brackets.
You _____________(to save) trees if you ____________ (to recycle) paper.
save, recycle
will save, will recycle
will save, recycle
save, will recycle
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