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valkas [14]
3 years ago
11

Which characteristics describe a spiral galaxy?

Biology
2 answers:
Vaselesa [24]3 years ago
7 0
The large majority of spiral galaxies are flat, rotating disks. Within the disk, there are stars, dust, and gas. The disk also contains spiral arms and a central concentration of stars known as the bulge of the galaxy.
Vikki [24]3 years ago
5 0

Answer:

Spiral galaxies are named after their morphology because they have a clear spiral structure around their nucleus when viewed perpendicular to their plane. In censuses they appear as the most common typology.

The spiral galaxies have young and old stars, suggesting that they did not form from another older galaxy or from an ancient clash between two galaxies. In the nucleus there is a predominance of older stars and in the arms there is a greater activity of star formation. In this way, the nuclei of the spiral galaxies have a more orange hue and the arms a more blue hue.

Spiral galaxies have diameters ranging from 20,000 light years to over 100,000 light years. Its masses are estimated to range from 10 billion to 10 trillion times the mass of the Sun. The Milky Way, where the solar system is located, is a large and massive spiral galaxy.

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Examine this US population map from 2000. which population distribution pattern do US residents most closely resemble? why do yo
Alina [70]

PLATO

The US population most closely represents a clumped pattern, as humans are social animals who interact regularly. The United States has higher populations near major cities, which generally have more resources than rural areas.

6 0
4 years ago
1. Using only random alignment, how many different combinations do you think are possible for a cell like ours but with only 3 p
alexdok [17]

Answer:

8 possible combinations

Explanation:

In a diploid organism (2n), there are two sets of chromosomes in each cell. Each set of chromosome is contributed by each parent i.e one set of chromosome from the father and one set from the mother.

To determine the number of possible combinations in each gamete of a cell, we use the formula 2^n, where n = number of chromosomes in haploid gametes. In this case, the cell contains 3 pairs of chromosomes, meaning that each gamete will have 3 chromosomes. However, there will be 2³ = 8 possible combinations of chromosomes in each gametes.

6 0
3 years ago
Enacting legislation that restricts a chemical suspected of being harmful while there is still scientific uncertainty about that
DochEvi [55]

Answer:

Answer is C, the precautionary principle

Explanation:

The precautionary principle is finding a way to cope with likely risk that can occur where scientific understanding is still in process.

It can also be explained as of being conscious when involving in an activity that raises threat of harm to the environment by taking precautionary measures.

4 0
3 years ago
Chemicals found in all cells that are used for work and growth are
Brilliant_brown [7]
I'm guessing its proteins and glucose??????
8 0
3 years ago
Plant cells are different from animal cells in this way:
timurjin [86]

Answer:

C . Cell wall and Chloropylast is correct answer

Explanation:

Because plants don't move so they have cell walls and chloroplasts but human cell moves so they don't need cell wall

4 0
2 years ago
Read 2 more answers
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