Answer:
Drought in the Sahel in the 1970s and 1980s made it look like the desert was expanding, because the reduction of rainfall at the desert margin (the Sahel) caused a reduction in vegetation. Warm, moist air rises near the equator, then cools and condenses its moisture, which falls as rain or snow
Answer:
11/16
Explanation:
HHHH, HHHT,
HHTH, HTHH,
THHH, [HHTT,]
[HTHT], [HTTH],
[TTTT], [TTTH,]
[TTHT], [THTT]
[HTTT,] [TTHH,]
[THTH,] [THHT]
If we look at this, we see that there are 11 ways out of 16 in which we get at least 2 tails.
