(A) just after it is dropped from the window of a stationary train
(B) just after it is dropped from the window of a train running at a constant speed of...
Adrenaline
Two responses :
(i) It acts on the heart due to which heart beats faster, resulting in the supply of more oxygen to our muscles.
(ii) Ther breathing rate increases because of...
(i) Adolescence brings about the hormonal secretion among teenagers. This leads to some physical and emotional changes among them which are difficult to handle by them.
(ii) (a) Proper counselling of...
An amorphous solid on heating at some temperature may become crystalline. Slow heating and cooling over a long period makes an amorphous solid acquires some crystalline character.