What tool is used to determine skin fold measurements?

Skin fold caliper

Explanation:

It is used to assess the skin fold thickness. It is based on hypothesis that fat is equally distributed over the body and thickness of skin fold is a measure of subcutaneous fat. It is used to predict the total amount of fat in the body. Basically four skin folds are measured to estimate the body fat namely, biceps skin fold, suprailiac skin fold, triceps skin fold, subscapular skin fold.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

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.