All animals need to eat blank to get blank to live. but in order to use this food they have to break it down in a process called blank. and so all animals have a group of connected organs call the digestive blank.

All animals need to eat food to get energy to live. But in order to use this food they have to break it down in a process called digestion. And so all group of animals have group of connected organs called the digestive system.

Explanation:

Digestion is the process of breaking down of complex molecule present in food into simple molecules so that they can be easily absorbed by the digestive system and assimilated into the cell.Food provide us with various nutrients that support our metabolic processes.It also provide us with energy that help normal functioning of the cell.The entire process of taking in food and assimilating it in the cell is called nutrition.Nutrition involves five steps ingestion, digestion, absorption, assimilation and egestion.

The digestive system consists of :

Mouth for the intake of food.Oesophagus to transfer the food from mouth to the stomach.Stomach helps in converting food to chyme.Small intestine for complete digestion and absorption of nutrients.Large intestine for lactose digestion and water absorption.Rectum for storage of fecal matter.Anus for defecation.

The digestive glands associated with the digestive system are:

Liver Pancreasgastric glands.etc.