Summation may lead to which of the following?

Which best describes the structure of dna?

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.

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?