Which of the following groups contain only biodegradable items ? (a) Grass, flowers and leather (b) Grass, wood and plastic (c) Fruit peels, cake and lime juice (d) Cake, wood and grass

HARITHA,SUBJECT MATTER EXPERT at Edumarz

Solution:option c and option d contains only biodegradable items

Option c-Fruit peels,cake and lime juice

Fruit peels, cake, and lime juice are biodegradable items and these items are easily degraded by biological activities.

Option d-Cake,wood and grass

Cake, wood, and grass substances are easily degraded by biological activities and are called biodegradable substances.

https://unsplash.com/s/photos/biodegradable

Biodegradable substances 

Substances that are easily decomposed by biological processes are called biodegradable substances.These substances are environment friendly and do not cause pollution.

Eg:Vegetable wastes,Fruit peel,grass etc.

Non-biodegradable substances

Substances that are not easily decomposed by biological processes are called non-biodegradable substances.These substances are not environmentally friendly and cause pollution.

Example:Plastic,paints,tyres

Problems caused by non-biodegradable substances

• Reduces soil fertility

• Combustion of materials like plastic causes air pollution

• Contamination of water resources

• Blockage in water canals

• Biomagnification

• Eutrophication

• Decline in the number of aquatic life

• Death of cattle by consuming plastic wastes

• Difficulties in disposing of waste

• Pollution of land

• It also creates ecological imbalance

Ways to solve problems caused by non-biodegradable substances

• Reduce the use of substances like plastic

• Use reusable cotton bags for shopping

• Stop combustion of non-biodegradable substances

• Avoid use of toxic chemicals

• Practice recycling