Although you consume millions of bacteria every day when ingesting food and drink, you rarely get sick. this is partially due to which of the following defenses of the digestive system?

antibacterial enzymes; stomach acid
histamines; antibacterial enzymes
stomach acid; cytokines
cytokines; histamines

Select all the correct answers. which statements fail to meet the requirements of a scientific claim? a). in the final 100 meters of a 10,000-meter race, an athlete's speed is more strongly related to anaerobic efficiency than to aerobic efficiency. b). flowers that reflect the most ultraviolet light are more likely to attract bees and other pollinators than flowers that reflect less ultraviolet light. c). the evidence supporting newton's laws of motion was accurate in newton's time, but the universe operates differently today. d). even though evidence indicates that the solar system's planets follow elliptical paths, copernicus's model involving circular orbits is true.