Rewrite the sentences,using the words in bracket
8,people get more diseases.The water is contaminated (if)
-> If the water is contaminated, people will get more diseases
9,the water temperature increases.Some aquatic creatures are unable to produce (if)
-> If the water temperature increases, some aquatic creatures will be unable to reproduce.
10,Because the water is polluted, the fish are dead (so)
-> The water is polluted, so the fish are dead.
11, It rained very had.He went out wihtout a raincoat (however)
-> It rained very heavily. However, he went out without a raincoat.