Can you guys answer this question, please will mark brainliest

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.

Where substance is produced during cellular respiration

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above