Fruits and vegetables cover one-half of the plate. these foods are dense sources of nutrients and health-promoting , despite their low calorie contents.

Phytochemicals

Explanation:

Phytochemicals are chemical compounds produced by plants, generally to help them thrive or thwart competitors, predators, or pathogens. The name comes from Greek φυτόν (phyton), meaning 'plant'. Some phytochemicals have been used as poisons and others as traditional medicine.

the psychologist would claim that the research results were significant.

the answer is a