Anton van Leeuwenhoek :-))
<span>When this situation happens you would begin by suspecting an opiate or barbiturate overdose then you would begin mouth-to-mask rescue breathing.</span>
Answer:
Temperature changes can also contribute to mechanical weathering in a process called thermal stress. Changes in temperature cause rock to expand (with heat) and contract (with cold). As this happens over and over again, the structure of the rock weakens.
Explanation:
The correct answer to this question is "b)That our early ancestors were tailed primates." An elongated tailbone occurs rarely in some newborn children. The presence of a tailbone indicate is that t<span>hat our early ancestors were tailed primates. </span>
A change in the color of a substance -- this one is indeed a chemical change. Think of iron, if iron turns reddish, it's a completely different substance.
