Biological clock is used for:
Iceland and Tasmania celebrate Christmas in different seasons because of
Which one of the following diseases is a non -infectious disease?
Election is the main feature of :
'Leech' belongs to which group?
Which is the most abundant element in atmosphere?
If the speed of rotation of earth increases ,then mass of earth would ?
Acid and Base combine to form ?
Radio waves reflect back form which layer of the Earth's atmosphere ?
If lime added to the soil ,then ?
If aship comes to sea water from river water ,.then its bottom will?
Liver digests
Which of the following does not excrete waste from the body ?
Rickets is caused due to the deficiency of
A solid needle placed horizontally on the suirface of the water floats due to ?