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dexar [7]
3 years ago
8

According to the plate tectonics model, what layer from Earth's rigid, mobile plates?

Biology
2 answers:
irga5000 [103]3 years ago
4 0
According to the plate tectonics model, layer from Earth's rigid, mobile plates D. crust and upper mantle. 
frozen [14]3 years ago
3 0

Answer;

-Crust and the upper most mantle

Explanation;

-The inside of the Earth is made up of three main layers, which are the crust, mantle and core. Compared to the mantle, the crust is very thin and brittle. The mantle is located below the crust and above the core of the Earth. The mantle layer of rock is approximately 2,900 kilometers thick.

-A tectonic plate (also called a lithospheric plate) is a massive, irregularly shaped slab of solid rock which move as cohesive, rigid bodies on the earth's surface. Tectonic plates have a large range of sizes and thicknesses.

-Plates at our planet's surface move because of the intense heat in the Earth's core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down.

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Q:- In dogs, the Mexican hairless phenotype never breeds true. When Mexican hairless are interbred the offspring are 2/3 hairles
drek231 [11]

Explanation:

The problem says that the hairless phenotype never breeds true. That means that it's not the result of a homozygous genotype (H₁H₁ or H₂H₂), so it is caused by the heterozygous genotype (H₁H₂).

The <u>expected </u>offspring from the cross between two Mexican hairless would be:

<h3>P                 H₁H₂  x  H₁H₂</h3><h3>F1    1/4 H₁H₁,  2/4 H₁H₂ and 1/4 H₂H₂.</h3>

And the <u>expected</u> phenotypic ratio 3:1. However, the observed offspring shows a 2:1 ratio. What's happening?

If the observed phenotypic ratio in the offspring of a monohybrid cross (a single gene with two alleles) is 2:1, we can suspect that one of the genotypes is lethal in homozygosis and therefore does not appear in the progeny (the puppies are born dead).

If we proposed that the H₂ allele is lethal in homozygosis, then:

  • The H₁H₁ genotype would cause normal puppies --> 1
  • The H₁H₂ genotype would cause hairless puppies --> 2
  • The H₂H₂ is lethal and causes the death of puppies --> 0

The phenotypic ratios change to 2:1, as observed in the experiment.

7 0
3 years ago
If you place a red blood cell in a solution and it swells, this means that: (Choose all correct answers)
jeka94

Answer:

The solution would be HYPOTONIC. The concentration of water is higher inside the cell

Explanation:

Hypertonic: cell shrink

Isotonic: cell will stay the same

Hypotonic: cell will swell

6 0
3 years ago
You are watching sleep researchers monitor the sleep of a normal adult. The participant is hooked up to an EEG. What brain waves
guajiro [1.7K]

Answer:

The correct answer is option b. "Alpha eventually replaced by theta".

Explanation:

Electroencephalogram (EEG) techniques allows researchers to monitor the phases of sleeping according of what brain waves are seen in the equipment. A normal adult connected to EEG will respond with alpha waves during a wakeful state. However, as the person becomes drowsy and enters to the first stage of sleep, the alpha waves will be eventually replaced by theta waves. Theta waves are the dominant waves during sleeping, and also could be seen during deep meditation.

8 0
3 years ago
Cellulose is found throughout the cell walls of plant cells cellouse makes cell walls rigid which indicates that cellulose is a
quester [9]

As you stated before, cellulose is found throughout the cell walls of plant cells. Cellulose makes cell walls rigid, so that would indicate that cellulose is a carbohydrate.

7 0
3 years ago
What is a niche I'm confused​
grin007 [14]

Answer:

the role an organism plays in a community

7 0
3 years ago
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