What are the main organs of the alimentary canal

The main organs are the mouth, phyranx, osephagus, stomach, small and large intestines, rectum.

Explanation:

Alimentary canal is a hollow tube that runs from the mouth to the rectum as part of digestive system. Food is ingested in the mouth, digested in the stomach, absorbed in the small intestine and indigestible material further passed down to the rectum where they are eliminated as waste. The elimentary canal also consist of accessory organs that aids in the digestion of food by secreting enzymes and further converts sugars into energy; the salivary glands, teeth, pancreas, gallbladder and liver.

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )

the correct answer is:

a population changes in response to a change in the environment.