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Which plan groups foods according to types and indicates how much of each type should be eaten daily for a healthy diet? a.mypyramid plan b.food guide pyramid plan c.dietary guidelines for americans d.dietary pyramid guidelines

10. what is one long-term effect of tobacco use? changes in brain chemistry coronary heart disease decreased appetite increased heart rate

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4