Dinosaurs disappeared from earth 65,000,000 years ago. express this number in scientific notation.

Consider the diagram below, which represents components of the biosphere. what do the two arrows in the diagram most likely represent? a. radiation b. photosynthesis c. cellular respiration d. energy conversions will give to anyone who answers quickly

What field of science did harry hess study?

What amino acid is coded for by this sequence after the mutation