Why do you put the specimen in the light path before you look through the eyepieces?

Which of the following statements best describes the relationship between the environment and human health? a. the environment is the only factor that affects human health. b. many aspects of the environment can have an impact on human health. c. human health is impacted by changes in climate. d. the environment has no impact on human health. select the best answer from the choices provided

Which of the following are the functions of the integumentary system? yadda-yadda, the 1st answer is the brainliest. : )

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above