Today humans suffer more from orthodontic issues compared to ancient humans because of the change of food from hard foods to soft foods. This resulted to smaller faces and smaller jaws together with rounder and shorter cranial vault. This made the bones supporting the teeth reduce in size faster than the teeth resulting to crowding and malocclusions.
Answer:
Pylorus
Explanation:
The stomach is a J-shaped organ which is a part of the digestive system. The digestive system on one end is attached to the oesophagus and on the end to the small intestine.
The pylorus structure of the stomach is composed of thick muscles which help to mix or agitating the food in the stomach and controls the movement of the food to the duodenum which is the first part of the small intestine. The movement is controlled by the ring of muscles in the pylorus called pyloric sphincter.
Thus, Pylorus is the correct answer.
ans 11) The art productions and architectural designs represent the following:
(*note*-pls hep yourself in expanding the points)
=> the beliefs of the ancient Egyptians.
=> the culture.(the way they used to live)
The 6 kingdoms of life are: <span>Plants, Animals, Protists, Fungi, Archaebacteria, Eubacteria.
Hope this helps :)
Please give brainliest</span>
Correct answer: 3.) Cool water at the surface traps nutrients deep in the lake to provide food during the winter.
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During the winter, only the top layer of river freezes, under the upper surface water is found in its liquid form and it does not freeze.
Oxygen is trapped under the layer of ice, as a result of this fish are able to live comfortably inside the frozen lakes and ponds.
Due to this the icy waters of the Arctic and Antarctic Oceans support a great amount of marine life