New species arise as the result of two processes, geographic and reproductive isolation. Explain how these processes work together to produce new species.
What will be an ideal response?
Geographic isolation occurs when a segment of a population becomes separated from the rest of the population. Over time, this allows for an accumulation of mutations to occur in both populations. If environmental conditions differ between the populations, environmental pressures may select for different sets of mutations. As this selection of difference continues, it may result in the inability of the subpopulations to sexually reproduce. Once the subpopulations are reproductively isolated, they are considered to be separate species.
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Which of the following statements is untrue?
A. Covalent molecules can have nonbonding electrons. B. Covalent bonds can involve more than one pair of electrons. C. Covalent molecules usually have low melting points. D. Covalent molecules are never crystalline. E. All of the above statements are true.
The application of force over distance is known as
A. Energy B. Work C. Power D. Fuels E. None of these is correct
In ArcMap, the resampling of pixel values is included as part of the rectification process.
Answer the following statement true (T) or false (F)
Increased solar output is an example of what type of climate change forcing?
A. Positive B. Neutral C. Negative