Question

Potassium, sodium and calcium are the metals that react with
room temperature.
Indiscriminate cutting of the trees results in improvement
Landslide results in loss of plant life.
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Answer 1

Answer:

$\large\mathcal{\red{Answer :)}}$

Explanation:

Potassium, Sodium and Calcium react with cold water. Potassium reacts violently and darts on the surface of water.

Answer 2

Answer:

potassium, sodium and calcium are kept in the kerosene because they react with air and water.