Question

Explain the following: (a) A very small amount of mercury on placing over a clean glass plate forms a tiny spherical ball. (b) A very small amount of water on placing over a clean glass plate forms an oval shaped drop.​

Answer 1

Explanation:

At least 17 elements are known to be essential nutrients for plants. In relatively large amounts, the soil supplies nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur; these are often called the macronutrients. ... Carbon and oxygen are absorbed from the air while other nutrients are absorbed from the soil

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