Questions

Convex mirror is used as rear view mirror in vehicles. Because the image is smaller, more image can fit onto the mirror, so a convex mirror provides for a larger field of view than a plane mirror. This is why they are useful.

Micronutrients are ne tothe nutrients which our body requires for functioning and to maintain immune to micro organisms. They include 

1) Vitamins 

2) Minerals

• Vitamins: A,B1,B2,B3,B5,B6,B8,B9,B12,C,D,E,K.

• Major minerals: calcium, magnesium, chlorine, phosphorus, potassium and sodium.

• Oligo-elements (trace minerals): iron, copper, zinc, iodine, manganese, chromium, cobalt, selenium.

Biosphere Reserves are established for the conservation of biodiversity for economic and social development  and  maintenance  of associated  cultural  values.There are  18  Biosphere  Reserves  in  the country.  Agasthyamala  Biosphere reserve is located at the southern-most  part  of  the  Western  Ghats and spread over two states,Kerala and Tamil Nadu. It was established in 2001;Nokrek Biosphere Reserve is  a  national  park  situated  in  West Garo  Hills  district  of  Meghalaya. UNESCO   made   it   the   Biosphere Reserves  in  May  2009;The  Great Nicobar   Biosphere   Reserve   has such    ecosystems    that    include tropical   wet   evergreen   forests, mountain    ranges    and    coastal plains. The region is well known for its rich biodiversity. It was made a biosphere reserve in January 1989; while  The  Great  Himalayan  is  a National   Park   situated   in   Kullu region  of  Himachal  Pradesh.  The park was established in 198

Bacteria which causes disease are called Pathogenic Bacteria. TB is caused by bacteria.

Some of the diseases caused by bacteria are::

1. Tuberculosis, TB (affects the lungs)

2. Salmonella (causes food poisoning)

3. Whooping cough (affects the lungs)

4. Septic Sore Throat