The answer is A. Root crops, including yams, sweet potatoes, and taro, became more common.
The root crops became more common, and practically the basic food source. This was due to the fact that the climate and soil on the Pacific islands were excellent for growing them, and of course for having a sustainable food source.
Answer:
Angle ECA=68°
Explanation:
To solve, set the two angles equal to each other.
14x-2=12x+8
Now, we need to make the x's go to one side of the equation. This is because we need the x's to equal something. Otherwise, we can't solve. To do this, I am going to move 12x to the right. Remember, if a number is positive on one side, it will be negative when you move it to the other.
2x-2=8
Now, we need to add two to both sides.
2x=10
Now divide both sides by 2.
x=5
Now to solve, plug in 5 for x.
14(5)-2= ?
70-2=68
Angle ECA=68°
The number that Colorado River would have to downcut per year to form the mile-deep canyon in 4 million years is 0.40 millimeter per year.
Depth of canyon = 1 mile
Time taken = 4 million years
Based on the above information, the rate will be:
= Depth / Time taken
= 1 mile / 4 million years
= 0.25 mile / million year
Note tha<em>t 1 mile = 1609344 millimeter</em>
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Therefore, the rate will be:
= (0.25 × 1609344) / 1000000 years
= 0.40 millimeter / years
In conclusion, the rate is 0.40 millimeter per year.
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Answer:
Advantages.
1.Fertile land for farming especially rice
2.plenty of water for fishing or agrictulture.
Disadvantages.
1.mosquitoes are attracted to water (malaria,dengue).
2.ares are at a constant risk of flood.
