पर्यावरण अध्ययन An animal comes out of its stomach to eat the soft parts of animals having hard shell of calcium carbonate, after opening the shell and eating the soft material, the stomach goes back to the animal body where the food is slowly digested the name of the animal is

 पर्यावरण अध्ययन in english,  संजीव जगत   question answers in english pdf   questions in english, Know About पर्यावरण अध्ययन online test पर्यावरण अध्ययन MCQS Online Coaching in english quiz book