............a long tube which allows food to pass from pharynx to stomach.
Small intestine
Esophagus
Stomach
............store fats in their humps to adapt to the desert environment.
Cows
Camels
Cats
............ It softens the food to be easy to swallow
Saliva
Tongue
teeth
.............has more than one stomach to digest grass easily.
Cow
Dog
Cat
The digestive system is responsible for digesting food and changing it from a simple form into complex one.
True
False
Both animals and humans need nutrients to gain energy.
The digestion process starts in the ...............
mouth.
........................ allows food to pass from pharynx to stomach.
Food is completely digested ............ by the help of digestive juices secreted by liver and pancreas.
in the large intestine
in the stomach
in the small intestine
Dogs teeth are sharp because they .......................
eat meat
eat fruits
eat grass