Cells in organisms need food, air, and waste removal. how are these needs met? organs and tissues perform these functions for the cells. each cell must specialize in all of these functions. cells get their food from the air and sunlight around them. cells share their waste with other cells.

Fill in the blank 1. digestion occurs in the small intestine through the action of enzymes. 2. urea, excess water, and other waste materials are eliminated in a water fluid called 3. can cause infections by injecting dna or rna into hosts. 4. the human immune system produces in response to a vaccine, which later can bind to and destroy a pathogen if it invades. 5. are structures that link bone to bone at a joint 6. in the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the the words i can use are: lymphocytes gliding pivot gas urine absorption dermis fulcrum lungs chemical viruses capillary vertebrae esophagus tendons antibodies synapses ligaments kidneys pathogens

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?

Which of the following statements is true of cells