Why does the author discuss sardines in “Uncertain Future”?

The tuna’s speed is mainly because of its large size.

Which of the following is NOT one of the problems faced by the Kihansi spray toad?

Why did the researchers want to tag the bluefin?

Which animal is probably the most in danger of becoming extinct?

Scientists spend several hours attaching the tag to the tuna they catch.

Why are so many amphibians at risk of extinction?

Write 1-2 sentences summarizing Paragraph M. 

In the sentence “Many of these — the Sumatran orangutan, the Amur leopard, a songbird from the island of Kauai and a thousand other species — can be found in a single room at the San Diego Zoo Institute for Conservation Research” (para. K), we can infer that

In para. M, Oliver Ryder says, “I think there are going to be more and more species where the only living material left is going to be cells in the Frozen Zoo.” Ryder seems to be ___ about the future of endangered animals.