Workbook Class 6 Science Chapter 16 Garbage In, Garbage out

Chapter 16

Garbage In, Garbage Out

Exercise

I. Answer the following questions in brief:

Ans 1 - can be converted: (a) dry leaves (b) vegetable and fruit

can't be converted: (a) plastic (b) aluminum foil

Ans 2 - Vegetable waste, green leaves, husk is type given to red worms.

Ans 3 - Food that contain salt, pickle, oil, vinegar, meat and milk should not be given to red worms. If you put these things disease - causing small organisms start growing these things disease - causing small organisms start growing. 

Ans 4 - Red worms do not have teeth. They have a structure called 'gizzard' which helps them in grinding their food. 

Ans 5 - Red worms do not have teeth. They have a structure called 'gizzard' which helps them in grinding their food.

Ans 6 - They also need moisture around them. If you take good care of your worms, in a month's time their number will double.

Ans 7 - A paste made of clay paper and rice husk.

Ans 8 - Burning of these produces smoke and gases that are harmful to our health.

Ans 9 - We should not be burnt plastics because it is hazardous to environment and may cause many health problems, including cancers in humans. Plastic should be sent for recycling agencies.

Ans 10 - We should not throw garbage in plastic bags as stray animals look for food in these bags, they end up swallowing these. Sometimes, they die due to this. 

Ans 11 - Plastic bags thrown carelessly cause problems. As a result, drain get choked and the water spills on the roads.