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enyata [817]
3 years ago
8

28. Which of the following describes the most important cause of demographic changes associated with the Columbian Exchange?

Advanced Placement (AP)
1 answer:
Inessa [10]3 years ago
7 0

Answer:

C is the right answer. The annihilation of up to 90% of the Native American population due to illnesses such as smallpox necessitated the growth of the African slave trade.

Explanation:

Because natives lacked an immune system capable of combating diseases brought in from Europe, C is the right answer. Of course, this resulted in the introduction of a slave system, as Europeans transported many slaves from Africa.

A is incorrect because the growth in the number of Europeans was due to a variety of social and economic factors.

B is also incorrect because it is not based on historical evidence.

D is also incorrect because it had no effect on the Natives' life expectancy.

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Answer:

I would say - Check your tire pressure every day.

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3 years ago
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2.5x + y = -2 ; 3x + 2y = 0
Mariana [72]
Looking at this, I think the easiest (personally) way to solve it would be using the Substitution method.
Meaning we have to rearrange ONE equation, to make ONE variable ( x or y) the subject.
(1)  2.5x + y = -2
(2)  3x +2y = 0

The first equation is the easiest to rearrange. Make Y the subject for (1).
Thus,
y = -2.5x - 2
Substitute this into equation (2).
∴ 3x + 2(-2.5x - 2) = 0
Expand and simplify:
3x - 5x - 4 = 0
∴ -2x - 4 = 0
Making x the subject:
-2x = 4
x = -2
From here, we need to substitute x=-2 into equation (1) or (2) to solve for the y-value. I would say the easiest way, would be to rearrange one, to make y the subject, which was what we did earlier.
Thus,
y = -2.5x - 2
y = ((-2.5(-2) -2)
y = 3
(X,Y) x = -2, y = 3
Answer: (-2,3)

I hope you followed through.
6 0
3 years ago
Find the real zeros on a trignometric function on the intervals of 0
shepuryov [24]
True and false hope you have the best
3 0
3 years ago
Guys I have a cross country race tmrw.. I am super scared... any advice?
Simora [160]

Answer:

take deep breaths thats all i got

Explanation:

5 0
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PLEASE ANSWER NEED THIS ASAP
Minchanka [31]

Answer:

The correct option is;

b. NATURE / Biology (genetics, brain chemistry & hormones effect on behavior

Explanation:

According to the principles of evolutionary psychology, the human and animal behavior are subconsciously determined by the inter-connected network neural network such that humans and animals are unmindful of the process or order in which the conclusions and behavioral decisions are arrived at. As such human behavior within a given environment is directed by the natural brain in which the interconnection of the senses or the neural  circuit is shaped by natural selection.

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