are inorganic elements that the body needs in relatively small amounts that aid in numerous body functions.

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

19. a cell is viewed under a microscope and is found to have two nuclear envelopes and spindles that appear to be breaking apart. which phase of mitosis is the cell most likely in? a. metaphase b. prophase c. telophase d. anaphase

This is the interaction of two organisms where one is and the other is neither nor harmed.