Right answer: A. jet streams.
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There are limited amounts of resources in a general area. Some civilizations may not have the ability to produce resources that they need. That makes 2 routes:
1) cooperation: They can cooperate with another people group that lives in a different region and trade with them
2) conflict: They can attack/raid another people group in a different region for the resources
hope this helps
Answer:
The answer is A.
Explanation:
Permeable means allowing liquids or gases to pass through.
So porous rock is known as <u>P</u><u>e</u><u>r</u><u>m</u><u>e</u><u>a</u><u>b</u><u>l</u><u>e</u><u> </u><u>R</u><u>o</u><u>c</u><u>k</u><u>s</u> .
Answer:
Events which occur in chemical reactions like photosynthesis are extremely fast.
Explanation:
To see what happens in reactions such as photosynthesis, scientists need advanced cameras that can capture ultra-fast motions occurring within extremely short scales of time.