Use the words, DNA, chromosome, and gene in a sentence.

What do animals wth echolocation have in common other than echolocation

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?

Why do we perceive objects as retaining their brightness under different lighting levels?