Diseases are broadly grouped into infectious and non infectious diseases.

Infection causing microbes travel from patient to person through:  (i) Air: Sneezing or coughing since little droplets are thrown which they reach another person through air. Example, common Cole, pneumonia etc.  (ii)...

(i) Preventing over crowing classes,  (ii) Providing safe drinking water,  (iii) Cleanliness in the school premises and also in the classroom,  (iv) Use of handkerchief or towel while an infected student in sneezing...

(a) infectious  (b) infectious  (c) infectious  (d) non-infectious  (e) non-infectious  (f) infectious  (g) non-infectious

Because of strong immune system our body is normally fighting off microbes. We have cells which are specialised to kill the pathogenic microbes. These cells are active when infecting microbes...

(c) either metals or non-metals 

(a) Iodine  (b) Bromine  (c) Graphite  (d) Carbon  (e) Sulphur, phosphorus  (f) Oxygen

Various advancements that have occurred in the field of biology have helped us gain a better understanding to fight against various infectious diseases. Biology has helped us study the life...

(i) The two sexually transmitted diseases (STDs) are gonorrhoea and syphilis. These infectious diseases spread from one person to another by sexual contact with an infected person. Two symptoms of STDs are...

(c) Black Quarter is a disease which is found in horse.

(c) Hepatitis-B is a potentially life-threatening liver infection caused by the hepatitis B virus. It can cause chronic liver disease and puts people at high risk of death from cirrhoris...