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AnnZ [28]
4 years ago
10

Earth’s thin, rocky outer layer is its

Biology
2 answers:
liraira [26]4 years ago
7 0
Earth’s thin, rocky outer layer is its crust. A small example is like a crust on a piece of bread. :) 

C is your answer 

IrinaK [193]4 years ago
7 0

Answer: The correct answer is C) Crust.

Earth is primarily composed of four layer from outside to inside. These layers are as follows-

1) Crust- It is the outermost layer of earth, which comprises of two basic rocks that is granite and basalt. It is hard and thinnest layer of the planet earth.

2) Mantle- It lies beneath crust and it is a thicker layer of very hot and dense rock.

3) Outer core- It lies beneath mantle and it is a layer of low viscosity fluid ( molten form). It is responsible for the magnetic field of earth.

4) Inner core- It is the innermost layer with extremely high temperature and pressure.


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A response that is uniquely directed against pathogenic bordetella pertussis would involve what component?
xxMikexx [17]

Answer:

Antibodies

Explanation:

Bordetella pertussis is an obligate human pathogen and is the etiological agent of whooping cough. It is known to be an opportunistic organism.

The pathogenic mechanism of Bordetella pertussis is also known as virulence factor. These virulence factors are known to include adhesins such as filamentous haemagglutinin, fimbriae and pertactin, which allow B. pertussis to bind to ciliated epithelial cells in the upper respiratory tract.

It is known to be the agent of whooping cough, a highly contagious respiratory disease, dramatic for infants and also for elderly and pregnant women.

In this case, the antibodies will be the response that is uniquely directed against the organism. It is said earlier that this organism is an opportunistic one, this means that it causes infection when the immunity is down. So, when the immunity is empowered , it will definitely fight against the organism

3 0
3 years ago
A. In a purebred tall plant, what gametes are possible?
Lelu [443]
A dwarf is a recessive trait. In order for the plant to be shorter, it would have to have 2 recessive alleles. The plant is also purebread so it wont contain the tall allele. The gametes that are possible are tt.
8 0
3 years ago
Why do you think root hairs are produced only on the part of the root system that has stop?​
mixer [17]

Answer:

Explanation:

They are found only in the zone of maturation, and not the zone of elongation, possibly because any root hairs that arise are sheared off as the root elongates and moves through the soil. Root hairs grow quickly, at least 1μm/min, making them particularly useful for research on cell expansion.

7 0
3 years ago
Is an increase in size or body mass resulting from an increase in complete already formed body parts?
amid [387]
No, because if their already formed, how would they get bigger
5 0
4 years ago
In a relatively small iguana population the allelic frequency is tracked for three generations. Webbing is a recessive allele; n
arsen [322]

Answer:

The answer is C

Explanation: The random change in the gene pool is due to genetic drift. Remember, genetic drift occurs at a more rapid rate when the population size is reduced. The flood is a random occurrence. It could have as easily been a drought.

4 0
3 years ago
Read 2 more answers
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