In community nutrition research, ecological studies do not compare collective data that represent an entire population.
a. true
b. false

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

To be or not to be that is da question

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water