Barrier effects can assume physical or social forms.Physical barrier effects consist of characteristics of the natural (physical) environment that inhibit the spread of culture. The classic examples are oceans, deserts, mountain ranges, dense forests, and frigid climates.
Answer:
The British believed that if Americans moved west over the mountains, it would be too challenging to regulate trade and taxes, and that their resources would be spread too thin. In addition, there were many people already living on the land in the Ohio Valley. There were other people settled in the Ohio Valley as well.
Answer: B
Explanation: B is showing how a farmer(Im going to assume) is giving treats/bigger meals to goats that are giving the most produce this choice reminded me of a dog getting treats if it does a good job.
To calculate the slope, the formula is (y1-y2)/(x1-x2) , which in this case, the answer would be:

Hope it helps!
Answer by YourHope:
Hi! :)
Question: Which soil layers comprise the topsoil?
Answer: O horizon!
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