Which of the following represent a parabiosphere? 

Birds excrete

To prevent water loss from body fluids, marine organisms store

Animals like fishes, amphibians and reptiles are 

Study of physical, chemical and biological aspects of fresh water is called 

Hibernation is seen in 

Trimethyl lead is formed by burning

Animals not capable of swimming in fresh water possess

Deserts, mountain peaks, deep layers of sea are examples for 

Which animals eliminated in the intraspecific competition.