LEARNING ACTIVITY SHEETS Grade 4- Science ACTIVITY 2: Am I Good or Bad? Directions: Identify whether the following changes in the environment are useful or harmful to you by putting a check (V) mark on the proper column. Changes in the Materials Effect of the Changes in the Materials to the Environment Useful Harmful https://images.pexels.com/photos/459728/pexels-photo- 459728.jpeg?auto-compress&cs-tinysrgbedpr-3&h=750&w=1260​