Food is contained in the gastrointestinal tract from the time of ingestion until it is completely digested and the waste prepared for elimination. true false

True

Explanation:

The complete digestive system of humans is composed of the gastrointestinal tract and the accessory organs. The gastrointestinal tract is a connected organ system which is the pathway for food from the mouth to the anus. It includes mouth, esophagus, stomach, small intestine, and large intestine. The accessory organs are tongue, salivary glands, pancreas, liver, and gallbladder.

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

answer; the above statement is (true);