What is a characteristic of aging and the immune system? a. immunity in older people does not seem to be affected by regular exercise. b. immune function does not decline with age in people who maintain good nutrition. c. antibiotics are often ineffective in treating infections in older people who have deficient immune systems. d. in the united states, infectious diseases are a minor cause of deaths in the elderly?

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics

Anne, an intern in a microbiology lab, was observing the characteristics of various specimens of protists. match each specimen to the category of protist to which it belongs.

Moving down the ramp from 6 meters to