1. Deforestation affects both people and animals. Which  produce a harmful effect on cutting trees?

2.Karen’s mother is cooking her favorite dish. As she cooks, she cuts, chops, grinds the different ingredients. Which changes in the materials does not have a harmful effect on the environment?

3. Environmental impacts are changes in the natural environment resulting directly from an activity that can have adverse effects on the air, land, and water. Which picture does not produce a harmful effect on the environment?

4. Pollution prevention is a global concern because of its harmful effects on people's health and the environment. Arrange the letters in order to form a practice to prevent environmental pollution.

5. A better way to prevent the negative effects on our environment is to stop doing some harmful activities. Arrange the letters in order to prevent the harmful effects of the changes in the materials on the environment.

6. Changes in materials occur in the environment,  burning tires that give off a foul odor gives a harmful effect.