What are some causes of water pollution?

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 did the first language sound like

What best describes the dropping height of a ball that bounces back up to a height of 45 cm