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weqwewe [10]
3 years ago
14

What species first appeared to walk upright?

Social Studies
2 answers:
kkurt [141]3 years ago
7 0

Answer:

The first species that appeared to walk upright was the Australopithecus.

Explanation:

Australopithecus was an extinct genus of hominins that lived in Africa between 4.2 and 2 million years ago.

The Australopithecus presented both ancestral characters (little bulky brain) and derived characters (teeth close to that of the genus Homo). Their locomotion was generally mixed, and associated a form of bipedalism with an ability to climb still marked. It is possible that one of the Australopithecus species is at the origin of the genus Homo, which appeared in Africa between 3 and 2 million years ago.

blagie [28]3 years ago
3 0
I think <span>Australopithecines but not really sure. Hope it helps!</span>
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A stratigraphic layer in one location overwhelmingly represents one species, while the same species is discovered in a similar s
murzikaleks [220]

Answer:

Biostratigrasphy.

Explanation:

<em>Biostratigraphy </em>is the method that is used to provide an estimate of age for this layer and this species. Biostratigraphy is a branch of stratigraphy. It focuses on assigning relative ages to rocks to similar stratigraphic layers that may be located hundreds of kilometers away by using the fossils contained in the stratus.

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In studying the _____, tolman focused on cognitive mechanisms. discreetness of behavior purposiveness of behavior associative le
Valentin [98]
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3 years ago
3.6.46-T Consider the following sample data for two variables. x 7 8 5 3 9 y 7 5 9 7 7 a. Calculate the sample covariance. b. Ca
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Answer:

1. Co-variance= -1.2

2. correlation coefficient= -0.4404

3.  There is weak negative relationship between x and y.

Explanation:

1.

Co-variance= Cov(x,y)= sum[(x-xbar)(y-ybar)]/n

xbar=sumx/n=32/5=6.4

ybar=sumy/n=35/5=7

x 7 8 5 3 9

x-xbar 0.6 1.6 -1.4 -3.4 2.6

y 7 5 9 7 7

y-ybar 0 -2 2 0 0

(x-xbar)(y-ybar) 0 -3.2 -2.8 0 0

Cov(x,y)= sum[(x-xbar)(y-ybar)]/n=-6/5=-1.2

Cov(x,y)=-1.2

2.

correlation coefficient=r

r=\frac{sum(x-xbar)(y-ybar)}{\sqrt{sum(x-xbar)^2sum(y-ybar)^2} }

x 7 8 5 3 9

x-xbar 0.6 1.6 -1.4 -3.4 2.6

y 7 5 9 7 7

y-ybar 0 -2 2 0 0

(x-xbar)(y-ybar) 0 -3.2 -2.8 0 0

(x-xbar)² 0.36 2.56 1.96 11.56 6.76

(y-ybar)²  0 4 4 0 0

r=\frac{-6}{\sqrt{23.2(8)} }

r=-0.4404

3. Since the value of correlation coefficient is negative and less than 0.5 , so, we can say that there is weak negative relationship between x and y.

7 0
3 years ago
All these were part of Hamilton's 1790 financial plan EXCEPT
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Answer:

B). issuing state currencies

Explanation:

I am pretty sure..

3 0
2 years ago
In civil cases, no one is charged with a crime. True or False?
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Answer:

I believe it's false.

Explanation:

Hope my answer has helped you!

6 0
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