Red rot is a disease caused to which of the following plant?
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The first Indian communication satellite was
The ionosphere overlaps which two layers of the atmosphere?
Classes comprising animals like fishes, amphibians, reptiles, birds along with mammals constitute the category called?
Among the given nutrients, milk is a poor source of which of the following ?
On the basis of distribution, resources can be classified into ____________?
The process of pollination by birds is also known as
The liberation of oxygen during photosynthesis is due to __________