Should be A the newer layers are usually on top
You would look for the chemical and physical properties because by identifying what properties those metals fit into it is easier to compare and contrast what metal they are
The pH of stomach is important as it helps to induce the digestive enzyme called pepsin. The presence of HCL i.e., hydrochloric acids in stomach results in the pH of stomach to become acidic which range from 1.5 to 6.5 values.
<h3>What is the pH level of stomach?</h3>
When the bolus enters the stomach, it aids the release of gastric juice having enzymes, mucous and HCL.
The upper and lower parts of stomach have varying pH values. Upper part has a pH of 4−6.5, while the lower part is with a pH of 1.5−4.0 which is highly acidic due to HCL.
Thus, the relative pH of stomach is acidic ranging from value 1.5 to 6.5.
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The right answer is <span>a tumor-suppressor gene.
Tumor suppressor gene has a role in the cell cycle to stop it at checkpoints, in order to verify that everything is okay in the cell and there's no DNA damage, if there's a DNA lesion, the cell must repair it before resuming its cycle. If there's no problem with the genetic material, the cell will proceed its cycle.
If these tumor suppressor gene is unfunctionnal, mutations will happen during the cell cycle withou being repaired, so it lead to a formation of tumors, and that is why it is called so.
These checkpoints happen specifically in G1 and G2 phases.
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A hypothesis is formed after observing but before the expiriment D the last option
