Waste management systems

How do worms break down waste?

• worms do not break down waste

• worms eat waste

• Worms break down waste by eating organic matter and breaking it down into nutrient-rich soil called castings

Methods of Waste Disposal

• organic waste

  food

  liquids

• Compost

• solid waste

  furniture

• Landfill

• paper

  glass

  cans

• Recycling

Advantages and Disadvantages of Landfill, Recycling and Composting

• Disadvantage: can produce harmful gases

• Advantage: Composting reduces the amount of waste going to landfills and produces nutrient- rich soil

• Disadvantage: energy-intensive

• Advantage: Recycling stations help conserve resources and reduce the need for raw materials

• Disadvantage: may attract pests

• Advantage: Landfills provide a safe and controlled way to dispose of waste.

Sort these items as Biodegradable or Nonbiodegradable

Groups:

(a) Biodegradable

,

(b) Nonbiodegradable

• tin cans

• fruit and vegtables

• wooden sticks

• styrofoam packaging

• plants

• animals

• dead bugs

Where can we take hazardous items so they are safely handled?

• Special Recycling and Waste Center

• Landfill

• Compost

• Don't throw it away, keep it forever

What is waste?

• Waste is a bad Item.

• Waste is something around us.

• both a and b

• Waste is any substance that is no longer useful or required or anything that has lost its value.

What is a landfill ??

• places where the garbages are taken to a low lying open area

• places where people go on a vacation for tourism.

• it is a place which is filled with a lot of drought

Bhoojo was asking, what was Vermicomposting ?? could you help him.

• The method of making a compost with red worms

• The process in which we dig a pit 30 cm deep

• none above

How can organic waste be recycled?

• Composting

• Burning

• Landfill

• none of these

Recycling is the process of....

• Collection of waste materials

• Disposing of waste materials

• Converting waste materials into new materials and objects.

• creating new waste