Is a singular /circular chromosome prokaryotic or eukaryotic

Witch type of microscope is used to view very small cell components like proteins and dna?

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above