Which is true of mitosis? A. Multi-cellular organisms use mitosis for growth and repair. B. Prokaryotic cells, such as bacteria, do mitosis. C. Cytokinesis is a step of mitosis. D. Mitosis increases genetic diversity from one generation to the next

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.