Ask question

Ask question

All categories

Delicious77 [7]

2 years ago

6

Why do you think that old rocks are rare on the ocean floor

2 answers:

Harlamova29_29 [7]2 years ago

5 0

At the mid-ocean ridges, lava is pushing the sea floor away from the ridge on each side. Eventually that part of the seafloor will be subducted under a continental plate at a convergent boundary. That means that the seafloor is constantly being renewed. The newest rocks will be found closest to the mid-ocean ridge and the oldest the greatest distance from the mid-ocean ridge.
<span>The oldest rock found beneath the ocean dates back only about 200 million years. </span>
<span>However, the rock underlying the continents is as much as four billion years old.</span>

Andreas93 [3]2 years ago

3 0

It is believed that old rocks are rare on ocean floors because the floor has many remains and we are not unable to reach them.

You might be interested in

During what phase do sister chromatids move apart?

ExtremeBDS [4]

Anaphase is the correct answer! Hope this helps :)

6 0

2 years ago

an ocean wave has a wavelength of 8 meters and wave period of 4 seconds. what is the wave speed? A. 2 m/s B. 4 m/s C. 12m/s D. 3

MrRissso [65]

The answer is A) 2 m/s because to calculate the speed, you do distance divided by time. This means that 8/4 = 2.

7 0

3 years ago

Which scientists won the Nobel Prize for publishing the first description of the structure of DNA?

gladu [14]

The scientists that won the Nobel Prize for publishing the first description of the structure of DNA were Watson & Crick.

8 0

3 years ago

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

A chemical has been found to harm the same components in both prokaryotic and eukaryotic cells. witch components are those?

sukhopar [10]

<span>DNA, cell membrane, ribosomes, and membrane-bound</span>

5 0

2 years ago