Question

give one useful and one harmful effect of a change in a solid or in a solid material. explain each effect by giving examples.

Answer 1

Answer:

Some changes have bad effect like pollution and destruction of habitat and lose of lives. Improper disposal of garbage, harmful chemicals and human waste can cause changes.

Good and bad effects result from certain changes of materials in the environment. Composting, recycling, technological development, water cycle and photosynthesis are changes that have good effects. Some changes have bad effect like pollution and destruction of habitat and lose of lives.

Answer 2

• A change in a solid or solid material can affect the environment.

• Composting, recycling, water cycle are changes that have good effects on the environment.

• We know that the growing of plants in trees has a useful effect.

• The cutting of trees may lead to soil erosion, oxygen level also fall in the air.
• We know that carbon dioxide, SO2 is released by burning coal, plastic, wood, etc. is also had harmful effects.
• Plastic is a material that has both useful and harmful effects.