While observing slides under a microscope, jack adjusts the microscope's mirror so that a circle of light can be seen. which microscope is in use?

a-compound microscope

b-electron microscope

c-scanning electron microscope

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

In the water cycle , when does water undergo a chemical change

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection