On each figure use a blue pencil to draw in streams, using arrows to show the direction of stream flow. Note that there is a main stream in the valley and there are at least two tributary streams or creeks. How do the contour lines indicate the direction of flow?
What will be an ideal response?
Contour lines form an upstream-pointing,V-shaped pattern wherever contour lines cross a stream.
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Why can't any star, no matter how massive, fuse elements heavier than iron?
A. Because the nucleons within iron have the least mass as possible B. It could happen, we just have not yet observed a star massive enough to do this. C. Actually, this occurs on a regular basis, which explains the great abundance of heavy elements. D. Because elements heavier than iron have less average mass per nucleon
No MNCs are larger than some national economies of the countries of the world
Indicate whether the statement is true or false
Surface winds tend to blow from high pressure to lower pressure
Indicate whether the statement is true or false
When a thunderstorm is _________, it has a well-established updraft and downdraft
A. forming B. mature C. dissipating D. developing E. weakening