Answer:
8 minutes and 20 seconds
Explanation:
photons emitted from the surface of the Sun need to travel across the vacuum of space to reach our eyes.
When new emperical evidence is discovered
The mass extinctions that occurred 250 million years ago and 65 million years ago may have been due to gradual process or <span>Catastrophic events.
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Answer:B
Explanation: Pernicious anemia is a condition caused by too little vitamin B12 in the body. It is one form of vitamin B12 deficiency anemia. Vitamin B12 helps the body make healthy red blood cells and helps keep nerve cells healthy. ... The most common cause of pernicious anemia is the loss of stomach cells that make intrinsic factor.
They are usually made of piles of lava, not ash. During the eruption, blobs<span> ("cinders") of lava, blown into the air, break into small fragments that fall around the opening to the volcano.</span>
