Which codon is the code for the amino acid histidine?

How had the study of mitosis affected scientists knowledge of cancer

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

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?