When is it necessary to qualify a column name while joining tables in MySQL?

Safety glasses and a full face mask are necessary when grinding metal.

The human body CANNOT make cholesterol, thus it is an essential nutrient we must consume in our diet in moderation.

The Adequate Intake (AI) for fiber for adults (19 – 50 years of age)  is _________ grams per day for women and ________ grams per day for men.

When a cell membrane is damaged by free radicals, which specific component of the cell membrane is damaged?

Marasmus is a serious condition resulting from inadequate intakes of protein and energy.

Connie is a healthy 22-year old student who weighs 155 pounds. What is her Recommended Dietary Allowance (RDA) for protein?

The maximum heart rate is the highest heart rate achieved during maximal exercise. Calculate the maximum heart rate of a 35-year old female.

Night eating syndrome and restrictive dieting are eating disorders.

The purpose of creating databases indexes is to _____.