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nordsb [41]
3 years ago
13

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

Biology
1 answer:
salantis [7]3 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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2 years ago
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galben [10]

Answer: The carbon cycle is the cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth. Steps of photosynthesis is absorption of light, electron. transport leading to the reduction, generation of ATP (adenosine triphosphate), and conversion of CO2 into carbohydrates.

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8 0
3 years ago
When Mendel crossed a plant homozygous for round seeds to another plant homozygous for wrinkled seeds, he found that all the pro
deff fn [24]

Answer:

a. The allele for round seeds is dominant to the allele for wrinkled seeds.

Explanation:

Mendel found that when two pure breeding plants that differ from each other with respect to one genetic trait are crossed, all the progeny express the phenotype of one parent. The phenotype of the other parent is not expressed in the progeny. He concluded that the genetic trait that is expressed in the F1 generation is dominant over the other which is masked in this generation.

A cross between pure breeding plants for round seeds and the wrinkled seeds obtained all the round seeded progeny. This meant that the phenotype "round" was dominant over the phenotype "wrinkled". If the allele "R" gave round phenotype and the allele "r" imparted wrinkled phenotype, the allele "R" was dominant to the "r".

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3 years ago
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