Some isotopes, however, decay slowly, and several of these are used as geologic clocks. Dating rocks by these radioactive timekeepers is simple in theory, but the laboratory procedures are complex. <span>All methods rely on the fact that certain elements (particularly uranium and potassium) contain a number of different isotopes whose half-life is exactly known and therefore the relative concentrations of these isotopes within a rock or mineral can measure the age.</span>
Answer:B. A customer gets sick with E. Coli after eating lettuce that was cut on same cutting board as raw meat.
Explanation:
The glass is not a food and is not considered cross contamination.
The meat was fully cooked and the E. Coli is destroyed.
the same situation as A.
No, because if their already formed, how would they get bigger
<em>T</em><em>he smallest unit into which a substance can be divided without changing its chemical </em><em>nature</em>
<em>Hopes </em><em>this </em><em>helps</em><em> uh</em><em> ♥️</em><em>♥️</em>
