Chapter 4 Vocabulary

1. (Research, aware, sites, overfish, threats ) – The scholars are aware of the overfishing problem and research the threats in different ocean sites.
2. ( triangular, deaf, adopt, hump ) – The triangular hump helps the deaf dolphin to adopt the life in the ocean.
3. (construction, pollution, notice ) – The pollution notice is posted on the construction.
4. (donation, volunteer, adopt, extinct ) – Some volunteers adopt the extinct dolphin and give some donation for the 21^st century research.
5. (waters, supply, century, explosives) – The explosives in the nearby waters supply the polluted food to the dolphins.