Match the environmental problems with how long they have been happening.

Solution:

1. Factories d (release) smoke into the air for decades.
2. People b (dump) plastic into oceans for many years.
3. Cars c (produce) harmful gases since they were invented.
4. We d (cut down) forests for centuries.
5. Companies e (use) excessive packaging since the 1990s.
6. Farmers f (apply) chemical fertilizers for generations.

Matching:

• 1 - d
• 2 - b
• 3 - c
• 4 - d
• 5 - e
• 6 - f

Answer: 1-d, 2-b, 3-c, 4-d, 5-e, 6-f.