plz help me I am timed

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.

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

Compare the composition of the moon's surface with the composition of the earth's surface.