These lines are called cross-contour lines.
Cross-contour lines are used in making nice pieces of art but most importantly they are a huge helping tool. These cross-contour lines can help people understand the solid form and the appearance of object from different perspectives and vantage points. Thus they are invaluable learning tool.
I believe the answer is:
women express their feelings verbally more than men do,
while men tend to prefer to keep the emotions at bay or express it througb non-verbal actions.
women and men show only a few differences in sexual attitudes and behavior.
Generally, men and women enjoy sex equally. Few differences could be said on female mate selection that put status in society as a more crucial factors compared to men on average.
there is very little difference in the way that men and women provide support.
Instinctually, humans would give words or encouragement or by intimate touch (hugs or kisses) to provide support.
D. inform listeners about planning for the future.
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