Bholu didn't quite understand what type of organisms can make us fall ill. Help him to choose the correct options.
Organisms that can cause a disease include bacteria, viruses, fungi, protozoa, worms, etc. All these disease-causing organisms are collectively known as pathogens.
Bholu suddenly caught cold and fever. The doctor gave him some medicines and asked him to take good rest. Bholu asked a curious question to the doctor as to why do we all fall ill? Choose the correct option that would have been the doctor's answer.
Bholu's neighbour doctor asked him to drink boiled and cooled water for few days. Bholu instinctively asked "Why?". The doctor replied, "Prevention is better than cure". Help Bholu to understand the meaning of this phrase.