慢速英语:Whale Deaths On the Rise in Alaska

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elevated – adj. higher than normal

toxic – adj. containing harmful or poisonous substances

filter – v. to move through or into something in small amounts or in a gradual way

concentrated – adj. existing or happening together in one place

pattern(s) – n. the regular and repeated way in which something happens or is done

emissions – n. something sent out or given off

breed – v. to reproduce

species – n. a group of animals or plants that are similar and can produce young animals or plants

predators – n. an animal that lives by killing and eating other animals

Are changes in the environment in your country causing an increase in the number of animal deaths? We want to hear from you. Write your thoughts in the comments section.