Answer:
<em>The features form when magma cools beneath earths surface are Volcanic necks and Dome mountains</em>
Explanation:
Volcanic Mountains are formed when molten rock (magma) deep within the earth, erupts, and after cooling it piles upon the surface. Similarly a volcanic plug, is a volcanic object created when magma hardens within a vent on an active volcano. These two features that are formed when magma cools beneath earths surface.
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Radio waves are electromagnetic waves and as such travel at the speed of light. Waves emitted a century ago would be 100 hundred light years away. A light year is the distance light travels in one year. In one year light travels about 5.9 trillion miles. therefore the waves traveled about 590 trillion miles in a century.
Answer:
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.
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