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3 years ago

Which trend in hominid evolution can be supported by fossil evidence?

1 answer:

5 0

Walking upright.

You can make a case for all of them, but for three of them indirectly.

But the answer, I think, is walking upright.

You can look at the pelvic bones and femur orientation in the hips. You can also look at the way the skull sits on the vertebra.

Chimpanzees have a skull that sits more downward, because they walk on all fours most of the time. While humans have skulls that sit more horizontally on the vertebra, which allows us to see out on the horizon more easily. We can do that because we stand on two feet.

I hope that helps.

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Assume that the red blood cell counts of women are normally distributed with a mean of 4.577 million cells per microliter and a

postnew [5]

Answer: C. 82.26%

Explanation:

Given : The red blood cell counts of women are normally distributed with

$\mu=4.577\text{ million cells per microliter}$

$\sigma=0.382\text{ million cells per microliter}$

Let X be the random variable that represents the red blood cell counts of randomly selected woman.

Z-score : $z=\dfrac{X-\mu}{\sigma}$

For X=4.2

$z=\dfrac{4.2-4.577}{0.382}\approx-0.99$

For X=5.4

$z=\dfrac{5.4-4.577}{0.382}\approx2.1544$

Now, the probability that the women have red blood cell counts in the normal range from 4.2 to 5.4 million cells per microliter will be :-

$P(4.2$

Hence, 82.26% of women have red blood cell counts in the normal range from 4.2 to 5.4 million cells per microliter.

4 0

3 years ago

What are three of the distinct stressful environmental conditions found in degraded areas in urban centers?

sdas [7]

There numerous of them but some of them would be contaminated soil which can be followed with altered soil chemistry that contains fewer soil organisms that are essential. The third one would be surface runoff due to extensively modified hydrology of the area.

3 0

3 years ago

The outward appearance of a particular trait is called the?

Murljashka [212]

The outward appearance of a trait is called a phenotype.
The phenotype of the organism can differ from the genotype(genetic makeup of a trait). This can happen if one half of the trait is dominant over the other half, creating the trait the dominant side 'codes' for.

8 0

3 years ago

Read 2 more answers

The diagram below shows the structure of a mitochondrion.

sladkih [1.3K]

Answer:

it's the outer membrane

Explanation:

because the outer membrane helps the mitochondrian with respiration

6 0

3 years ago

Can someone please help me

Lorico [155]

Answer:

Explanation:

As the scenario in the question is depicting, the force applied on the rock by two friends is equal but in the opposite direction. As a result, as the force is equal and working in opposite directions hence, the rock will not tend to move. If the force applied by one of the friends would be greater or lesser than the rock would have moved from its position depending on the force.

8 0

3 years ago