UNIT 6. VOCABULARY

Darwin’s theory of ____ has helped to explain the disappearance of some species and the survival of others.

• evolutionary

• evolve

• evolution

• evolutional

The saola and the rhino are considered ______ species in Viet Nam.

• endanger

• endangered

• danger

• dangerous

Mammoths and dinosaurs used to live on our earth quite a long time ago, but they are now ______.

• extinction

• extinct

• extinguish

______ helps to maintain the balance of nature that we rely on for our well-being and benefit.

• Diversity

• Biodiversity

• Diversify

• Diverse

Animals classified as CR on the conservation status scale are in danger of _______.

•  extinguish

•  extinct

•  extinction

 The new _____ theory has combined Darwin's theory of natural selection with genetic factors to explain how evolution occurs.

• evolutionary 

• evolution

• evolve

 Many people think the money spent on protecting _______ species should be used for improving the lives of the local people.

• endangered

• endanger

• danger

• dangerous

Old people and children are particularly ______ to lung diseases in the cold weather.

• evolution

• vulnerable

• habitat

• conservation

Baby sea turtles are most _____ when they leave their nests and make their way to the sea. They are convenient targets for birds and other animals.

• extinct

• vulnerable

• habitat

• evolution

Elephants are usually _____ for their tusks, while rhinos are killed for their horns.

• diverse

• poached

• endangered

• vulnerable