Answer:
Early residents of the Indus Valley created streets and buildings using a grid pattern.
1) Hunting: People can over-hunt a species killing too many of them too fast.
2) Global warming: A place can get to hot for them to survive their anymore like coral reefs for example.
3) Destruction of habitats: This can leave animals defenseless and open to attack.
Answer:
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I'm assuming you mean topographic maps, in that case C. Elevation
