Polaris, the North Star, can be used for navigation in Earth's Northern
Hemisphere because

Answers

Answer 1

Answer:

Answer:

because it is always positioned over the North Pole and it doesn't seem to move or is fixed.

Explanation:

In case you're lost or you don't have a GPS or a compass, you can always use the North Star, also known as "Polaris," in finding your direction towards the Northern Hemisphere. This star is noticeable because it illuminates in its brightness. In order to make sure you've spotted Polaris, you have to trace the "Plough" or the "Big Dipper." This is commonly seen alongside the Polaris.

Answer 2

Answer:

it remains nearly stationary in the sky, aligned with Earth's axis, helping travelers determine north even without a compass.

Why is the North Star, can be used for navigation in Earth's Northern Hemisphere

Polaris is located almost directly above the Earth's North Pole. As the Earth rotates, Polaris appears relatively fixed in the night sky.

This makes it a valuable reference point for navigation, as its position indicates the direction of the North Pole and allows travelers to find their way northward.

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Regular human body cells contain a total of 46 chromosomes. Therefore, because of meiosis, sperm cells contain ____ chromosomes.

Answers

Regular human body cells contain a total of 46 chromosomes. Therefore, because of meiosis, sperm cells contain _23___ chromosomes.

Final answer:

Regular human body cells, also known as somatic cells, contain 46 chromosomes. These cells undergo meiosis to produce gametes or sex cells, which include sperm cells, each having 23 chromosomes.

Explanation:

In biology, the regular cells that make up the human body, commonly known as somatic cells, contain 46 chromosomes which is characterized as diploid (2n). These somatic cells undergo a process called meiosis, a type of cell division that reduces the number of chromosomes by half, producing gametes or sex cells (i.e., eggs in females and sperm in males). During meiosis, a single diploid cell divides twice to produce four haploid cells. Therefore, human sperm cells, being a type of gamete, contain 23 chromosomes, rendering them as being haploid (1n).

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The angular diameter of an object cannot be measured in which of the following?A. degrees
B. light-years
C. arcminutes
D. arcseconds

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I believe the answer would be "B. light-years."

I'm sure it is b. light-years

What makes up a region? How are regions divided?

Answers

Answer:

region is an area that includes a number of places--all of which have something in common. Geographers categorize regions in two basic ways: physical and cultural.

Explanation:

ways: physical and cultural

Question 15 of 15 How were slaves usually captured in Africa during the slave trade? A. They were traded away by European colonists. B. They were captured by the European military. O C. They were captured by African slave traders. D. They were paid by Asian slave traders. SUBMIT

Answers

Answer:

Explanation:

They were captured by African slave traders

Answer:

i'd say c

Explanation:

If gasoline produces only carbon dioxide and water when it burns completely, why is automobile exhaust a source of air pollution even before it begins to react with other chemicals in the air?

Answers

Answer:

Automobiles release hydrocarbons that react to form pollutants in dry air.

Explanation:

As carbon from the gasoline mixes with the air it reacts and starts to burn and this burning of hydrocarbon in the air produces heat, smoke, and gases, as well as chemical byproduct like water and carbon particulate matter.

22.38% of CO2 is produced by burning one gallon of petroleum. So, for the hydrocarbon to get successfully converted into carbon dioxide and produce carbon monoxide in the air it needs to react and burn, and CO is the result of not a sufficient amount of O2 in the air.

Various automobiles release the nitrogen sulfur into the air and soil and give sooty dust and particle sizes that can change the composition of the further atmospheric cycle.

As earth air is composed of 78% nitrogen, 21% oxygen, 0.9% argon, and 0.03% carbon dioxide. The more gases that are released more spread the pollutant content of the air.

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