Which mineral helps hold calcium to the teeth making them more resistant to decay

Fossils found in strata reveal that a) innate drive to complexity of life b) unused body parts decrease in size c) older strata carry fossils that differ greatly from living organisms d) geologic changes occur quickly on earth

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

Approximately percent of the energy created by cell metabolism is used by the body to carry on its normal functions, such as respiration, digestion, reproduction, muscular movement, circulation, and cellular regrowth.