Now-a-days water bottles and lunch boxes are made from agricultural products like fruit pulp. These are called ______ .

Assertion (A): Coal and petroleum are called fossil fuels.

Reason (R): Fossil fuels are formed from the remains of dead organisms after millions of years.

Compressed Natural Gas (CNG) is considered a better fuel than coal/ petroleum, because _______.

Which of the following groups contain only bio-degradable items?

Classify the following into producers, consumers, decomposers.

i) butterfly

ii) grass hopper

iii) calottes

iv) snakes

v) shoe flower

vi) nitrobacteria