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3 years ago

Explain why European countries looked to reach the Americas Columbus' voyage.

Geography

1 answer:

Softa [21]3 years ago

5 0

Answer: Mostly for land, gold, and riches.

Explanation: Basically when Columbus arrived in The Americas, He thought it was the East Indies. Columbus wanted to go to India for riches, spices, and land. When he arrived the people were poor, but they thing they cared about was land. Many European countries wanted the land.

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loris [4]

Answer:

the identify intruders through smell and through chemicals One of the first ways that bees protect themselves is by building their hive in a very secret spot. ... Another way that bees will defend themselves is by stinging. Ouch! Female bees have a stinger on the end of their body and they will use it to sting something that might be threatening it.

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Answer:

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3 years ago

What type of map illustrates the location of California’s amusement parks? a. thematic c. surface b. physical d. all of the abov

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3 years ago

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3 years ago

A sewage treatment plant influent is estimated to have a typical BOD5 value of 320 mg/L. What efficiency must the treatment plan

Mademuasel [1]

Answer:

The required efficiency of BOD5 removal of the plant needs to be at least 91%

Explanation:

Even though a WWTP (Waste water treatment plant) has several unit operations, it needs to have an overall treatment efficiency. In this case, it is only required to know how much BOD5 do we need to lower by removing organic matter from the water. It goes as following:

$Efficiency(%) =\frac{actual concentration-goal concentration}{actual concentration}*100%$

This will work for any efficiency, for any parameter you need to define. They need to be in the same concentration unit, of course.

Replacing known values, we have:

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Which we will approximate to 91%, because decimal percentages do not say anything and are not currently used.

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