... Unit 10: ENDANGERED SPECIES TEST 2 Choose the word which is stressed differently from the rest.1. a. temperature b. serious c. awareness d. chemical 2. a. ability b. agriculture ... demography.a. on b. in c. from d. for 10. Many modern medicines are derived _______ plants and animals.a. on b. for c. from d. in11. 15,589 species (7 ,26 6 animal species and 8, 323 plant species) are now ... c. can / should d. must / needn't 23 . Peter has been working for 10 hours. He _______ be very tired now.a. needn't b. must c. has to d. should 24 . He is unreliable. What he says _______...