how do forces act on a dropped object as it is falling? A. air resistance is pushing up on the object, while gravity is pulling it down. B. Air resistance is pulling down on the object, while gravity is pushing it up. C. Both gravity and air resistance are pulling down on the object. D. Both gravity and air resistance are pushing up on the object.

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