<span>A fake or "pretend" experimental treatment is called a placebo.
</span>The placebo tretment is fake because it <span> is a substance with no known medical </span><span>effects. In some cases this type of treatment </span> can produce a very real response.
Answer:
While it is difficult to determine exactly how many Natives lived in North America before Columbus, estimates range from a low of 2.1 million to 7 million people to a high of 18 million.
Explanation:
It's a region located in the lowest part of water. In this case the answer would be (C) Along the bottom.
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They dont release any oil
they "preen" their feathers with their beaks not put oil on them
