Sandra wants to improve her body composition. four of her friends have given her advice. analyze the sentences to determine which friend gave her the best piece of advice? a. sanchez told her to take diet pills and to eat less than 1,000 calories a day. b. john says to eat several, balanced, low-calorie meals throughout the day and to exercise regularly. c. laurie says to eat only fruits and vegetables and to exercise regularly. d. shelia told her to eat whatever she wants as long as she exercises five days a week for 60 minutes.

To best improve your body composition, you should focus on a well maintained diet. Try to make it a habit of eating throughout the day. Eating several low calorie meals a day instead of a larger meal is a good habit to get into. Exercising is good on many levels of your health and is another habit worth getting into.

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite   shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.

Active site is where they touch.