C. continental drift
(If the continent drifted apart, similar fossils were previously proximal would now be great distances apart)
<span>The vertical sequence of the layers of soil is called a soil C. PROFILE.</span>
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Apart from social and environmental impacts, earthquakes also have negative effects on a nation's economy. Governments have to be responsible for the damage caused by earthquakes. As we can see, earthquakes cause infrastructures to collapse, reservoirs dams, shops, and hospitals are devastated after an earthquake.
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Each cell expresses, or turns on, only a fraction of its genes. The rest of the genes are repressed, or turned off. The process of turning genes on and off is known as gene regulation. ... Gene regulation also allows cells to react quickly to changes in their environments.
