Which of the following statements best describes a role of beneficial bacteria in
an ecosystem?
O
They make nitrogen available to other organisms.
O
They use many of the nutrients in the atmosphere
O
They release chemicals that are toxic to certain living things.
O
They exchange gases with their surrounding atmosphere.

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.