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White raven [17]
3 years ago
10

What is the crust beneath the Atlantic Ocean like?

Biology
2 answers:
True [87]3 years ago
5 0
<span>mostly made of granite and limestone</span>
Stolb23 [73]3 years ago
5 0

Answer:

The oceanic crusts are thin and are usually about a thickness of about 5 to 7 km. They contain rocks that are poor in silica and mostly enriched in magnesium (Mg) and iron (Fe). Due to the divergent motion of plates, seafloor spreading takes place as a result of which the hot molten magma comes out to the ocean floor and immediately cools down and gets solidified along the mid-oceanic ridge. The rock types produced here are mainly basaltic in nature. Basalt is a mafic rock and is comprised of denser minerals due to which the oceanic crust is relatively denser than the continental crust. Pillow basalts also form in this region.

Thus, <u>the crust that is present beneath the Atlantic ocean is also comprised of basaltic to andesitic in composition</u>.

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Match the bacterial shape with its description
slega [8]

Answer:(A) a cylindrical shaped bacteria exhibiting a variety of rod shapes.- pleomorphic.

B) A bend, or 'coma shapped' rod - Vibrio.  

C) Long, curved, flexible rod - spirochete.

D) Long, curved rod - Spirillum.

E) A small, cylindrical shaped bacteria with a cocci appearance - coccobacillus.

F) Cylindrical shape - Rods.

G) Round shape - Coccus.

Explanation:

A). A pleomorphic bacteria is the one which is capable of changing it's shape, mode of nutrition and reproduction.

B). Vibrio is the genus of gram-negative bacteria. It posses a curved comma shape. This is responsible for foodborne infections.

C). Spirochete is a helical, rod shaped bacteria. It posses flexible cell wall and a mechanism that helps in motility.

D). Sprillium is a gram-negative bacteria. It has a rigid spiral structure. It has a long curved rod. It is found in the stagnant water and can also be responsible for causing water borne diseases.

E). Coccobacillus is a bacteria which has shape which is in between cocci and rod. These are very short rods which are mistakenly consider as cocci.

F). A bacillus or bacilliform bacteria is a rod shaped bacteria which can be found in different taxonomic groups of bacteria. These have cylindrical shape.

G) A coccus is the shape of the bacteria which can be consider as either spherical, ovoid or round in shape.

6 0
4 years ago
Which body system or structure is responsible for the control and regulation of a person's breathing?
Elanso [62]

Answer: Nervous system

Explanation:

The cerebellum of the brain is the structure of the nervous system known to control various muscles of the body that are involved in involuntary activities such as breathing.

Thus, the nervous system controls and regulates a person's breathing

8 0
3 years ago
What does natural selection favor?​
ratelena [41]

Answer:

The mechanism that Darwin proposed for evolution is natural selection. Because resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.

The reason that natural selection is important is that it's the central idea, stemming from Charles Darwin and Alfred Russel Wallace, that explains design in nature. It is the one process that is responsible for the evolution of adaptations of organisms to their environment.

Explanation:

hope this helps

3 0
3 years ago
Which process is similar to binary fission?
solong [7]
The process that is similar to binary fission is Mitosis
7 0
4 years ago
Read 2 more answers
Pls help its time
stepan [7]
B ) active transport!!
6 0
3 years ago
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