Which of the following statements describes an organ? a The basic unit of structure and function in living things. b A group of cells that work together to perform a specific function. c A structure in the body that is composed of different kinds of tissue. d A group of organs that work together 2 to perform a major function in the body.

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this