D Learning Task No. 2 : Draw a happy face if the given situation states changes in the materials that are useful in the environment and sad face if it states harmful effect. 1. Cutting and shaping pieces of used wood/lumber into chair 2. Water on rivers and streams become contaminated with plastie wastes. 3. Lung infections and other respiratory diseases become rampant due to excessive smoke from factories and motorized vehicles. 4. Recycling of waste for organic fertilizers, 5. Dumping of garbage in bodies of water, 6. Cutting of trees in the community, 7. Vegetable gardening, B. Flowering of trees for early onset of fruiting, Clean up drive in the community. 0, Flies, cockroaches and rats breed on garbage thrown on​