1. causes 2. brings 3. affects 4. harmful 5. indirect 6. affects 7. come 8. protect
Vi
1. if i were you, i would plant vegetables in the garđen
2. what would happen if there were no cars in the world ?
3. researchers have found out what has lead to the pollution of the river
4. many animals eating litter become sick because people throw into the ground
5. factories won't dump waste into the river if the government fine them heavily
