The body expends (uses) 10% to 20% of calories to fuel vital metabolic activities, including: building and repairing tissues, breathing, circulating and filtering blood producing and transporting substances, and maintaining body temperature.

True or False

0% 10. use the table to answer the question. which elements would you expect to find mainly in the earth’s core? element density (g/cm3) aluminum 2.7 iron 7.87 nickel 8.9 silicon 2.33 iron and silicon aluminum and silicon aluminum and nickel iron and nickel