Answer:
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<em>Radiocarbon</em> dating can be used to date fossils in rocks to give an approximate age.
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Answer
To decrease the PH of a neutral solution add to it an acidic substance such as lemon juice.
Explanation
The p H (potential of hydrogen) is the level of an aqueous solution which tells us how acidic or basic a substance/solution is based on it hydrogen ion concentration. The higher the concentration of hydrogen ions, the lower the p H. In distillated water that has a p H of 7(neutral), you can increase the p H of the water by adding an alkaline substance such as baking powder.
•observation
•smell
•touch
•they also look at the plant and see the features or the characteristics
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