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Flura [38]
3 years ago
14

A ______ is a circular band of muscles designed to prevent movement into or out of a body cavity or organ. Multiple choice quest

ion.
Biology
1 answer:
grandymaker [24]3 years ago
8 0

Answer:

sphincter

Explanation:

circular muscle that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning.

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humans developed antibiotics to fight bacterial infections however some antibiotics are no longer effective in killing the bacte
Lapatulllka [165]

Answer:

Changes in genetic makeup occurs with the passage of time.

Explanation:

Antibiotic cause mutation in the bacteria which allowed to develop resistance in the bacteria. This resistance and change in the genetic makeup obeys the theory of evolution which states that all species are changed gradually with the passage of time. The genetic makeup of bacteria also changes with the passage of time and attain resistance due to regular application of antibiotics so due to this resistance, the antibiotic can't work on the bacteria.

3 0
2 years ago
A large area undergoes the same amount of metamorphism. All rock reach the same metamorphism grade. However, after the metamorph
Mrrafil [7]

The only explanation in this situation is that the parent rocks of the marble and slate were different. This indicates that the region once held both shale and limestone before metamorphism.

In reference to rocks, it denotes those that have undergone metamorphism—rocks that may have started as sedimentary, igneous, or another type of metamorphic rock but has since undergone "recrystallization" and taken on an entirely new form—under new temperature and pressure conditions.

For instance, when limestone is heated and compressed, it changes into marble, a more coarsely crystalline and occasionally banded rock.

When shale, a clay-rich, soft rock, is compressed, slate, a tougher rock, is created.

The alterations are frequently even more remarkable, resulting in the formation of new minerals, including garnet, mica, and tourmaline (as seen in schist).

To know more about metamorphism click here

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4 0
1 year ago
Which turn describes an organism that has a dentical allies for a treat
melisa1 [442]

Answer:

all the thing that make it up

Explanation:

maybe search Google

8 0
3 years ago
No system is completely closed off from its surroundings
s2008m [1.1K]

No system is closed off by it surroundings.

4 0
3 years ago
Read 2 more answers
Which statement describes a step in DNA replication
Lynna [10]
The double helix unwinds and each strand forms a template for a new strand — I’m pretty sure!
4 0
2 years ago
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