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nordsb [41]
4 years ago
13

What have scientists determined forms and shapes land masses here on Earth?

Biology
1 answer:
salantis [7]4 years ago
8 0

C

A Land mass is large geographical area that is surrounded by oceans. Therefore this can be synonymous to continents.

Explanation:

The crust is divided into tectonic plates that are dynamic because they move on top of the semi-plastic mantle.  The movement of the tectonic plates is driven by the convection currents of the mantle that drag along the crust above.  The tectonic plates collide at convergent boundaries where tectonic plates are consumed as one is subsided into the mantle. On the other hand, new crust is formed at divergent boundaries where two tectonic plates move away from each other and magma rises from the mantle and cools into new crust.

The convection  currents occurs because the lower mantle is hotter and less dense compared to the cooler denser upper mantle. Therefore the upper mantle always tends to sink as the lower mantle rises. These convection currents are the same as in any other fluids that are disproportionately heated.

Learn More:

brainly.com/question/7667599

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Which state in the United States is most effected by earthquakes due to the location of the San Andreas Fault and two plates sli
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Answer:

California

Explanation:

"California's most damaging earthquakes of the past 150 years, such as the 1906 “San Francisco” earthquake, have occurred on faults in the San Andreas fault system."

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Similarities and differences between dna and rna
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- DNA and RNA are made up of monomers called nucleotides. - DNA and RNA both have 3 nitrogenous bases: Adenine, Cytosine and Guanine. - DNA and RNA both have a phosphate groups in their nucleotides. Sometimes called phosphoric acid.Feb 18, 2009
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Identify the choice that best completes the statement or answers the
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Evaporation of the liquid
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Indicate the expected number of Barr bodies in interphase cells of individuals with Klinefelter syndrome; Turner syndrome; and k
madreJ [45]

Answer:

Barr bodies are small bodies that are dark staining bodies that show the inactivated X chromosome, these sex chromatin bodies attach to the membrane of the nucleus of interphase cells.

One less of the total number of X-chromosome (n-1) represents the number of Barr bodies.

Then,

The number of Barr bodies with Klinefelter would be:

Klinefelter (47,XXY): (n-1) = (2-1) = 1 Barr body as here two X chromosome present.

Similarly, for

Turner (45,XO): (n-1) = (1-1) = 0 Barr bodies (X chromosome = 1)

Now, as per the question, the bar bodies for karyotypes given

47,XYY: (n-1) = (1-1) = 0 Barr bodies

47,XXX: (n-1) = (3-1) = 2 Barr bodies

48,XXXX: (n-1) = (4-1) = 3 Barr bodies

7 0
3 years ago
In a certain plant, yellow leaves are dominant and red leaves are recessive. A plant with genotype Yy and a plant with Yy are cr
Tanzania [10]

Answer:

One offspring would have red leaves.

Explanation:

Given

Yellow leaves are dominant and red leaves are recessive

Let us assume that the trait of Yellow color of a leaf be  represented by "Y"

and the trait of red color of a leaf be  represented by "y"

When two parent of genotype "Yy" are crossed with each other, the following offsprings are produced as shown in the punnet square below

Y y

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y Yy yy

Total four offpsrings are produced out of which only one has red leave as red color is a recessive trait and it will appear only when both the allele in a cell are of red color.

Thus, one offspring would have red leaves.

7 0
3 years ago
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