The nitrogen cycle couldnt exist without

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 buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

What is turgor pressure, what causes it, and what does it do for a plant?