When you swallow food, it doesn't just drop down into your stomach. Muscles contract in a wave-like motion to move the food along through the esophagus. This muscle movement is called, peristalsis, or peristaltic waves. These peristaltic waves contract behind the food bolus pushing it along the digestive tract.
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All the energy of earth comes from the Sun
Answer: A chromosome is a long DNA molecule with part or all of the genetic material of an organism. The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not
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*The total mass will not change in photosynthesis since equal amounts of oxygen and water are produced when equal amounts of energy and carbon dioxide are used* is the answer
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I went over my notes and i have finished this quiz.
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Carbon Dioxide, Water, and sunlight
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