A name for three primary soil nutrients that are often in short supply

Essential Elements for Plant Growth

From a management perspective only, the primary nutrients are N, P, and K, because they are most often limiting from a crop production standpoint.

Soil is a major source of nutrients needed by plants for growth. The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK. Other important nutrients are calcium, magnesium and sulfur.

genetic variation will increase because of a new habitat and food source.

explanation:

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.