What is the definition for "hypothesis"?
a.) a scientific concept that explains what
patterns of behavior will be seen through
repeated investigations
b.) a hypothesis or group of related hypotheses
that can be accepted as true based on
repeated experimentation with similar results
c.) a possible explanation or answer to a scientific question that is based on prior knowledge or research and is testable

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