What effects do oil spills have on the ocean ecosystem

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.

The response is the basis for vaccination. primary secondary tertiary none of the above

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.