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faust18 [17]
2 years ago
7

In _______ a population isolated by a geographic barrier becomes a new species as it accumulates changes by natural selection or

genetic drift.
Biology
1 answer:
Mashcka [7]2 years ago
3 0

Answer:

The correct answer is allopatric speciation.

Explanation:

Allopatric speciation occurs when a geographical barrier comes between a species population living in the same area. This geographical barrier separates the population into two different geographical area which do not have the same condition.

So as both the separated population get different habitat environment to live so they evolve differently from each other. So natural selection and genetic drift works differently in both the population which brings genetic changes in the population and helps in creating a new species.

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This family of bacteria is often associated with urinary tract infections?
Colt1911 [192]

Answer:

The correct answer is C) Proteus

Explanation:

Proteus comes under the family <em>Enterobacteriaceae </em>and is often associated with urinary tract infections in animals and humans. These bacteria are often the part of intestine but become pathogenic when enter into urinary tract.

<em>Proteus mirabilis</em> is a gram negative anaerobic bacteria present as normal flora of intestine known to cause urinary tract infections in humans but most of the urinary tract infection is caused by <em>E. coli.</em><em> </em>

When these bacteria get into the blood stream they can cause systemic inflammatory response syndrome and sepsis which has very high mortality rate.

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5 0
3 years ago
A method used by horticulturalists when they rotate the use of fields—planting crops on a particular piece of land for a period
svetoff [14.1K]

Answer:

The correct answer will be- Crop rotation

Explanation:

When the growth of a type of crop which uses soil nutrients in abundance and then growing another crop in the same filed led to the decrease in the production of the next crop.

Thus farmers adapted to avoid such farming practices and developed a new practice which allowed the land to become fertile again so that the growth of next crop will not be affected.

The practice involved the planting of a crop on a piece of land then leaving the soil ploughed and unsown for a longer period of time and growing corp on another piece of land allowing the time to restore the nutrient content. This practice is known as "crop rotation".

Thus, crop rotation is the correct answer.

8 0
3 years ago
Why do plants produce less oxygen during the night
Naily [24]

Answer:

<em>Plants give out carbon dioxide not only at night but during the day too. It happens because of the process of respiration in which plants take in oxygen and give out carbon dioxide. As soon as the sun rises another process called photosynthesis starts, in which carbon dioxide is taken in and oxygen is given out</em>

3 0
3 years ago
Can carbon move from a living component of an ecosystem to a nonliving component
DIA [1.3K]

Answer:

yes

Explanation:

because carbon can travel anywhere

4 0
2 years ago
Two umbilical arteries leave the __________ of the fetus, enter the umbilical cord, and deliver blood to the placenta.
Aloiza [94]

Answer:

internal iliac arteries

Explanation:

6 0
3 years ago
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