Question

(47) What is called infectious disease?
(a) Diseases spread through water (b) Diseases spread through air
(c) Diseases spread through one animal to other animal (d) Diseases sprea
through pollution
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Answer 1

Answer:

Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease. Some infectious diseases can be passed from person to person.

Answer 2

Answer:

Infectious Diseases are caused by organisms like Bacterias,Fungis, Parasites,Viruses,etc.

Explanation:

Many Bacterias are found in our body as well !! They can either be harmful for our body or helpful.

But most of the time Infectious Diseases spread when we directly come in contact to a infected person.

Therefore,your answer is Option(c)

i.e. Diseases spread through one animal to other animal.