During this laboratory exercise, you will study the gross anatomy of the alimentary canal, which includes all the following structures except the During this laboratory exercise, you will study the gross anatomy of the alimentary canal, which includes all the following structures except the pancreas. small intestine. large intestine. esophagus. stomach.

Explanation:

The alimentary canal, which is also called the gastrointestinal (GI) tract or gut, is the entire length of tube that winds through the body from the mouth to the anus and digests, breaks down and absorbs food through its lining into the blood

Organs within the alimentary canal include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine

The alimentary canal is considered outside of the body because it is open to the external environment at each end (mouth, anus)

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.