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sp2606 [1]
3 years ago
5

What are population pyramids? How do they help in understanding about the population of a country? (​

Biology
1 answer:
harina [27]3 years ago
6 0

Answer:

Did this help?

Explanation:

Population pyramid is the graphical presentation of the age, sex composition of a population. (2) The shape of the population pyramid help us to know about the people living in that particular country.

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The _______ two objects are to each other, the stronger the force of gravity is between them.
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Answer:

The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled.

Explanation:

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3 years ago
In the year 2500, five male space colonists and five female space colonists (all unrelated to each other) settle on an uninhabit
iris [78.8K]

Answer:

The correct answer is genetic drift.

Explanation:

The phenomenon of changing the frequency of an allele in a specific population with time is known as genetic drift. The mentioned gene variation or the modification in the frequency of the allele is required to take place abruptly so that the phenomenon of genetic drift can take place. The environmental factors do not play an essential role in the phenomenon of genetic drift to take place.  

The process of genetic drift occurs generally due to random sampling of organisms, it illustrates the random change in the number of gene variants within a population. When the existence of the different forms of a gene, that is, alleles, enhances or reduces by chance with time within a population, the phenomenon of genetic drift occurs. Thus, the mentioned case is an illustration of genetic drift.  

7 0
3 years ago
Drip irrigation provides precise amounts of water directly to crop roots. This method is one of the mainstays of sustainable agr
Vsevolod [243]
Drip method is one of the mainstays of sustainable agriculture because it : A. reduces soil erosion
Like the name said, Drip irrigation is designed to utilize the least amount of water supply by giving the water to the plant drip by drip. In this method, there is no flow of water that commonly caused the soil erosion (because the water flow cut out the soil little by little)

4 0
3 years ago
Read 2 more answers
What is the definition of cause and effect structure?
Alona [7]

Answer:

C

Explanation:

It gives a cause and effect, basically it describes one event and explains how it led to another.

8 0
2 years ago
Please help
Evgen [1.6K]

Answer: Anaerobic respiration produces a relatively lesser amount of energy as compared to aerobic respiration, as glucose is not completely broken down in the absence of oxygen. In animal cells anaerobic respiration often occurs during exercise. The glucose does not get fully broken down in this process, so it does not release its full potential energy. Instead of carbon dioxide and water it breaks down to form lactic acid and a small amount of energy.

Explanation:

5 0
3 years ago
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