One mark Questions

Q1

What are biodegradable and non-biodegradable wastes?

Answer:

Biodegradable waste: Biodegradable waste can be decomposed and degraded by microbes or microorganism.

For example: Kitchen’s waste.

Non-biodegradable waste: Non-Biodegradable waste cannot be decomposed by microbes or naturally.

For example: Paper, plastic, metal etc.

Q2

A low lying area where all the waste of a city is dumped is known as _______.

Answer:

Landfill

Q3  ______are also known as farmer’s friends.

Answer:

Redworms.

Q4

_______is the manure prepared by redworms.

Answer:

Vermicompost.

Q5

What are the 3 R’s?

Answer: 

3 R’s are:

• Reuse
• Reduce
• Recycle

Q6

Jute bags are as harmful to the environment as are plastic bags. State true or false.

Answer:

Jute bags are environment-friendly.

Plastics are non-biodegradable . It pollutes the environment and also poses a threat to animal habitation. Jute , on the other hand, is biodegradable and does not cause any harm to the ecosystem .

So, the given statement is False.