SAQ

Asked by vk1994 | 1st Jul, 2009, 07:05: PM

Expert Answer:

Such separation allows a highly efficient supply of oxygen to the body. This is important for animals like birds and mammals which have high energy needs.

Answered by  | 1st Jul, 2009, 11:08: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.