Kawana knows that the sandwich she eats for lunch will give her energy for lacrosse practice that afternoon, but she wonders exactly how the food will reach her cells and enable her muscles to move. Give a brief description of how energy from food is made available for cellular use.

Explain the importance of producers, primary consumers, secondary consumers. and decomposers in an ecosystem

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.