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Viefleur [7K]
3 years ago
5

How do magnetic stripes of iron in ocean rock provide evidence of seafloor spreading

Biology
2 answers:
Deffense [45]3 years ago
5 0

Answer:

They show how the density of the seafloor has changed. They reveal a matching pattern on either side of the ridge. They reveal differences in the mineral composition of newly created rock.

Explanation:

STatiana [176]3 years ago
3 0

Answer:

In the 1960s, scientists found evidence that new material is indeed erupting along mid-ocean ridges. The scientists dived to the ocean floor in Alvin, a small submarine built to withstand the crushing pressures four kilometers down in the ocean. In a ridge’s central valley, Alvin’s crew found strange rocks shaped like pillows or like toothpaste squeezed from a tube. Such rocks form only when molten material hardens quickly after erupting under water. These rocks showed that molten material has erupted again and again along the mid-ocean ridge.

When scientists studied patterns in the rocks of the ocean floor, they found more support for sea-floor spreading. You read earlier that Earth behaves like a giant magnet, with a north pole and a south pole. Surprisingly, Earth’s magnetic poles have reversed themselves many times during Earth’s history. The last reversal happened 780,000 years ago. If the magnetic poles suddenly reversed themselves today, you would find that your compass needle points south.

Explanation:

I found this somewhere.

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Proteins in the cell membrane have many functions. Which type of protein would be used primarily to transport materials in or ou
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So in this case, let's look at pore proteins. These are proteins that cross a membrane and act as a pore for the materials that need to cross the membrane.

One example of a pore protein is an aquaporin. These proteins aid in the transport of water into or out of a cell.

Therefore, the answer to your question is: A) Pore proteins.

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3 years ago
What possible offspring genotypes and probabilities for each can be generated by an Aa parent through selfing?
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6 0
2 years ago
Which of the following samples will have the greatest volume at STP?a. 22 g Neb. 22 g Hec. 22 g O2d. 22 g Cl2 e. All have the sa
sammy [17]

Answer:

22g of He

Explanation:

Volume of gas at STP is given as :

Volume occupied(dm³) = number of moles x 22.4dm³mol⁻¹

In order to solve this given problem, we would first find the number of moles from the different masses of atoms and molecules given.

Number of moles = \frac{mass }{Molar mass}

Now, let us obtain the molar mass of the given atoms and elements:

For Ne; molar mass is the atomic mass = 20gmol⁻¹

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      Cl₂ = (35.5x2)gmol⁻¹ = 71gmol⁻¹

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Volume occupied by He at STP = 5.5 x 22.4 = 123.2dm³

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Volume occupied by Cl₂ at STP = 0.3099 x 22.4 = 6.94dm³

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3 years ago
How do humoral and cell mediated immunity help each other <br> Please help me thanks
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Humoral immunity protects the body against extracellular pathogens and Cell mediated immunity protects the body from intracellular pathogens .

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Humoral immunity and cell mediated immunity works together with assistance from helper T cells, B cells.

Learn more about how humoral and cell mediated immunity help each other

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