The mechanical digestion in the stomach involves the contractions of muscle smoothly. Thus, the correct answer is C.
The process of converting food into nutrients to use it as energy and for development is called as digestion. The digestion takes place mechanically and chemically.
In the chemical process of digestion, food is broken down with the help of enzymes whereas in the mechanical process of digestion food is broken down with the help of chewing from teeth or tearing.
Therefore, option C is correct as this breakdown through teeth involves contractions and relaxation of muscles.
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Mechanical digestion in the stomach involves the physical breakdown of food through smooth muscle contractions, which churns and mixes the food, preparing it for further chemical digestion.
Mechanical digestion in the stomach involves the breaking down of food into smaller bits using physical force. This process includes the smooth muscle contractions of the stomach to churn the food. This mechanical churning of food in the stomach serves to further break it apart and expose more of its surface area to digestive juices, creating an acidic soup called chyme.
These contractions isolate small sections of the stomach, moving the contents back and forth while continuously subdividing, breaking up, and mixing the contents. By moving food back and forth in the stomach, mechanical digestion mixes food with digestive juices and facilitates the further process of chemical digestion.
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raise
b. It created spontaneous generation, which showed the earth's age.
c. It produced the chemicals of life by simulating earth's modern conditions.
d. It produced radiometric dating, which showed the earth's age.
TrueFalse
Sandstone, shale, conglomerate, and breccia are examples of clastic sedimentary rocks. They form when rock fragments, or clasts, are eroded, transported, and deposited in layers. Over time, they become compacted and cemented together to form sedimentary rocks.
Four examples of clastic sedimentary rocks include sandstone, shale, conglomerate, and breccia. These rocks form through a process called lithification. Initially, weathering breaks down pre-existing rocks into small fragments or particles. These particles, known as clasts, are then transported by natural forces like wind, water, or ice in a process known as erosion. Over time, these clasts build up in layers and eventually get compacted and cemented together to form sedimentary rocks.
Sandstone, for example, forms from sand-sized clasts, often in desert dunes or riverbeds. Shale is made of clay or mud-sized particles and often forms in calm water environments like lakes or deep sea beds. Conglomerates consist of large, rounded clasts and often form in fast-moving rivers. Breccia, on the other hand, is formed from large, angular clasts and usually forms near mountainous regions where there is a high rate of mechanical weathering.
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