Why is Saturn not considered a terrestrial planet? A. It is giant and made of gas. B. It has a moon. C. It has a very small atmosphere. D. It is very dense.

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d.the size of the geographic area inhabited by a population can cause speciation.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

If the rna molecule in a human has the nucleotide sequence of guu, this would the amino acid valine would be needed to make the protein. how would this cha process was occurring in a mushroom?