<span>Pepsin is an enzyme that breaks down proteins into amino acids in the stomach (where the pH is 1-3). Pepsin needs to be in an acidic environment to be activated. The optimum temperature is between 30 oC and 40 oC because the average human body temperature is 37 oC. The optimum pH is the acidic one because your stomach has an acidic pH.</span>
True
Explanation:
Aqueducts are constructed channels for transporting water from one point to another.
- They were first constructed by the Roman to move water from hollow valleys and narrow areas.
- Today, aqueducts include canals, ditches, gutters, channels that are used to carry water.
- Aqueducts aids the movement of water from one place to another.
- Development of aqueducts by the Romans was seen as a great advantage in that civilization.
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The waves of a seashore hit the sand, because of the moon the tide lowers and rises. when it lowers the tide pool only has some water and a lot of oxygen when the tide rises it has less oxygen.
Answer:
The pairs of chromosomes become arranged on the metaphase plate.
Explanation:
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