5) Why does it take less time to prepare curd in summers as compared to preparing it in winters?
6) How are the following diseases transmitted?:
(a) Malaria (b) Common Cold
(c) Tetanus (d) Typhoidp
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Class: 8
Chapter - 02 ; Microorganisms: Friends Or Foes
Subject: Biology
Answers
Answer:
5. In summers the temperature is high as compared to winters and increase in temperature helps in the growth of bacteria which are essential for the formation of curd so in summers it takes less time to prepare curd as compared to winters
6. a Malaria is transmitted because of the bite of an infective female Anopheles mosquito,transfusion of blood from infected persons.
b Common cold is transmitted through airborne respiratory droplets and skin contacts
c Tetanus are transmitted when we have wounds caused due to contaminated object
d Typhoid is transmitted through contaminated food and skin contacts
hope it helps you
Answer:
Curd is easy and fast to prepare in summer due to the temperature ️. Bacteria multiply when they find the temperature hot..
1. Malaria is transmitted through Anopheles, a female mosquito.
2. Common cold is transferred via air that carries the germs.
3. Tetanus bacteria comes from soil, dust.
4. Contaminated food and water causes typhoid.
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Hope you doing fine sis, cyaa