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Rom4ik [11]
3 years ago
5

What process or event was required for plate tectonics to begin on earth ?

Biology
2 answers:
tatuchka [14]3 years ago
7 0

Older oceanic crust, which is more dense than continental crust, has long since been recycled in the process of subduction. Credit: U.S. Geological Survey. Plate tectonics shapes the surface of our planet, but it also runs much deeper: Plate movement is the surface expression of convection in Earth's interior.

gogolik [260]3 years ago
3 0

Answer:

The tectonic plates appeared when the earth began to cool, where the water flooded the earth. The earth that was submerged originated the tectonic plates.

Explanation:

Plate tectonics are large semirigid rock blocks that make up the earth's crust. The Earth is divided into fourteen main tectonic plates, which move slowly and continuously over the mantle, and can approach or move away from each other.  The movement of the plates results in the formation of mountains, oceanic pits, volcanic activities, earthquakes and tsunamis.

The formation of tectonic plates was a result of the cooling and flooding of the earth. When the earth began to cool, where water flooded the earth. The submerged earth originated the tectonic plates.

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According to the Shannon Diversity Index, which of the five blocks above, with each containing 36 squares, would show the greate
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Answer:

so here correct option is A. 5

Explanation:

solution

as number of population groups live in a definite area is called diversity

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and in 4 there is 4 type population group

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3 years ago
Which statement is a scientific theory?
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Answer:

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Explanation:

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The substances listed on the left of a chemical equation are the
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Ractants

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Consider 2 genes in peas- gene controlling seed color- yellow Vs green; gene controlling seed texture-smooth Vs wrinkled. Assume
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Answer:

Smooth & yellow: 9

smooth & green: 3

wrinkled & yellow: 3

wrinkled & green: 1

Explanation:

Gene controlling seed color are yellow Vs green

Gene controlling seed texture are smooth Vs wrinkled

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Off spring in F1 generation are smooth yellow (SsYy)

This means smooth texture is dominant over wrinkled texture and yellow color is dominant over green  

in F2 generation, the cross is carried between SsYy

SY         Sy        sY          sy

SY SSYY SSYy SsYY SsYy

Sy SSYy SSyy SsYy Ssyy

sY SsYY SsYy ssYY ssYy

sy SsYy Ssyy ssYy ssyy

Smooth & yellow: 9

smooth & green: 3

wrinkled & yellow: 3

wrinkled & green: 1

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3 years ago
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