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<span>A fast-flowing river of air that forms when two air masses of very different temperatures meet is called a jet stream :)</span>
Augustinian friar Gregor<span> Johann </span><span>Mendel.
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Answer:
D
Explanation:
Because every system in the body is vital
Answer:
the presence of cell structures in the cell
Explanation:
<em>If you do not know the reasoning behind this, you may want to read the explanation assignment the teacher adds, or do more research, look at notes, or pay attention during class :)</em>
