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mariarad [96]
3 years ago
7

How many people lived in North America before the Europeans arrived ?

Biology
1 answer:
diamong [38]3 years ago
4 0

Answer:

While it is difficult to determine exactly how many Natives lived in North America before Columbus, estimates range from a low of 2.1 million to 7 million people to a high of 18 million.

Explanation:

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How does the human heart interact with gravity
emmainna [20.7K]

Answer:

Many parts of the cardiovascular system (including the heart) are influenced by gravity. On Earth, for example, the veins in our legs work against gravity to get blood back to the heart. Without gravity, however, the heart and blood vessels change – and the longer the flight, the more severe the changes.

8 0
3 years ago
Cultural evolution and biological evolution are similar in some ways. Important distinctions between them include:
Alenkasestr [34]

Answer:

i would go with b

Explanation:

Both are based on variation, heredity and selection, but how these appear and work differ. Biological evolution is unconscious, opportunistic and not goal-directed, while cultural evolution is conscious, at best planned, and can have a goal.

8 0
3 years ago
write 1 reason for why the pride be a positive trait, write 2 reason for why the pride be negative trait
Zina [86]
Pride can be a positive trait as it helps an individual gain confidence in their work and skills, making them more successful and happier. However, pride can be negative as it may cause one to believe they are entitled to their success, and also may cause them to treat others inferiorly. Hope this helps! :)
6 0
3 years ago
The process of bacterial reproduction is referred to as
fomenos

Answer:

binary fission

Explanation:

5 0
2 years ago
I don't understand this!
sattari [20]
Each on diverged from the common ancestor and has its own accumulated mutations. If they have six differences each it would be 10,000 years per one mistake giving you a total of 60,000 years ago. 
7 0
3 years ago
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