V. Crossword Puzzle (27.-35.). Write the letters of your answer on the space provided. 2 . 3 5 6 Across 3. Although extinction is a normal part of human modifications to thu planct have greatly accelerated the rate at which extinction occurs. 6. loss - the main driver of extinction 7. species - they use resources that the other species depend on. 8. happens when the last member of the species dies. 9. Extinction can disrupt vital processes. 3 7 . 8 DO 9 Down 1. When we harvest too many plants and animals from their habitat. 2. A main threat to wildlife habitat. Humans have regarded the air, water, and soil as waste rcccptacles. 4. A specics becomes extinct if it can no longer to changes in the environment and consistently compete with other organisms in its cnvironment. 5. ___ rain forms when sulfur dioxide and/or nitrogen oxides are put in the atmosphere. It affccts plant life. It also disturbs rivers and lakes.​