Black holes are thought to be abundant, yet they are hard to find. Explain why
What will be an ideal response?
Black holes are gravitational vacuums, so much so that light cannot escape. Consequently, they are really difficult to see (hence, "black hole"). In order to look for them, we must look for hot matter emitting x-rays as it is being engulfed by a black hole. In and of itself, this means that we can only look for black holes that are not isolated, as we need to be able to detect whatever matter is near them as it is being sucked in in order to determine the location of a black hole.
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A) dehydration B) hydration C) oxidation D) reduction
Warm oceanic pools form in areas of
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When a flood crest passes downstream, stream level falls more rapidly than it rose.
Answer the following statement true (T) or false (F)
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