Give two mode of spread of each of the following diseases: : :

malaria
janundice
plague
tuberculosis
colera

3. a ray of light travelling in air is incident on a face ofa rectangular slab and comes out from the oppositeface. the angle between the incident ray and thenormal to the surface is 30°. what is the anglebetween the ray coming out of the slab and thenormal to the face from which it comes out? no one can solve if you solve it briefly​

Which of these is used in a clinical thermometer? (a)silver(b) lead(c) bromine(d) mercury​

Difference between a pea seed and a maize grain