a) already extinct
b) already dangerous
c)
in danger of extinction
3. Which poses the greatest threat to polar bears today?
a) wildlife hunting
b) climate change
c) water pollution
4. What major change has occurred in the polar bear's natural habitat?
a) colder air temperatures
b) less
hunger and exhaustion
c) disappearing sea ice
5. Which type of energy contributes to global warming?
a) hydro-electricity
b) coal-generated electricity
c)
wind-generated electricity
6. Certain companies use money and political influence to attack climate science and
renewables in order to protect
a) endangered species
b) natural
habitats
c) their future profits
7. The World Wildlife Fund estimates that _______ of Arctic sea ice has disappeared in the
past 30 years.
a) over 25%
b) over 20%
c) about 10%
8. What type of conservation efforts are people generally interested in?
a) saving insects and spiders
b) protecting large animals
c)
reforestation projects
9. Many threatened or endangered species can be saved by a large
a) reforestation project
b) food chain
c)
coal mine
10. Thanks to laws that protect them, species that make it onto the endangered species list
_______ become extinct.
a) always
b) often
c)
rarely
