1 Describe why some animals will eat their ownfaeces.2 Describe two ways the digestive system can bedifferent in animals.Apply and analyse3 Explain the function of each of the four stomachsfound in a cow.4 Examine the images in Figure 4 of the digestivesystems of a carnivore, a herbivore and anomnivore. Correctly label each digestive systemaccording to the animal’s diet. Provide evidencefrom the diagrams to support each of your answers.5 Identify the possible diet of the fossils in Figure 5.Provide evidence from the photographs to supporteach of your answers.Evaluate and create6 Investigate the digestive system of an animal ofyour choice. Compare your selected digestivesystem to the digestive system of humans. Explainhow the structure of your animal’s digestive systemallows it to dige

Some animals eat their own faeces due to a process called coprophagy. This is often because their diet is high in cellulose, which is difficult to break down and digest. By eating their own faeces, they are able to pass the food through their digestive system again, allowing them to extract more nutrients.

The digestive system can be different in animals in a number of ways. Firstly, the length of the digestive tract can vary greatly. Herbivores, for example, often have a longer digestive tract than carnivores, as they need more time to break down the tough cellulose in plants. Secondly, the stomach can be different. Some animals, like cows, have a multi-chambered stomach that allows them to ferment plant material.

A cow has four stomachs: the rumen, the reticulum, the omasum, and the abomasum. The rumen is the largest and is where fermentation of the food occurs. The reticulum also aids in fermentation and in regurgitating food for further chewing. The omasum absorbs water and nutrients from the food. The abomasum is similar to a human stomach, where the food is digested with enzymes.

Without the images, I can't provide a detailed analysis. However, generally, a carnivore's digestive system would have a larger stomach and shorter intestines, as meat is easier to digest. A herbivore's digestive system would have a smaller stomach but much longer intestines, as plants are harder to digest. An omnivore's digestive system would be somewhere in between.

Without the photographs, I can't provide a detailed analysis. However, the diet of a fossil animal can often be inferred from the shape and wear of its teeth, as well as the contents of its stomach or feces, if preserved.

Without a specific animal to investigate, I can't provide a detailed comparison. However, in general, the structure of an animal's digestive system is closely related to its diet. For example, carnivores have sharp teeth for tearing meat and a relatively short digestive tract, while herbivores have flat teeth for grinding plants and a long digestive tract for fermenting plant material.