Chromosomes are strands of ________ molecules

The most common problem reported by married couples is

a. family finances and budgeting b. interference by in-laws c. communication problems d. child-rearing issues

By drinking milk during their teenage years, girls can consume enough required __________ to avoid __________ later in their lives

a) magnesium; osteoporosis b) iron; stroke c) calcium; osteoporosis d) Vitamin D; rickets