(a) What is Adaptation?
(b) Write the causes and symptoms of 'Altitude sickness'.
cWhat is Brood Parasitism"? Give an example.

Explanation

(a) Any atribute of the organisms (morphological , Physiological or behavioural) that enables the organism to survive and reproduce in its habitat is called adaptation.
(b) Low atmoshperic pressure at high altitudes causes altitude sickness .
Symptomos include fatigue , nauses and heart palpitations .
(c) Brood parasitism in birds is a fascinating example of parasitism in which the parasitic bird lays it eggs in the nest of its host and lets the host incubate them. During the course ef evolution the eggs of the parasitic bird have evolved to resemble the host.s egg in size and colour to reduce the chances of the host bird detecting the foreign eggs and ejecting them form the nest .
Eg, - cuckoo lays in the nest of crow.