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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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En qué caso los microorganismos pueden ser beneficios y en qué casos perjudicales para la salud de los seres humanos dos benefic
aliina [53]

Answer:

Ver explicacion

Explanation:

Los microorganismos son beneficiosos y perjudiciales para los seres humanos.

Los microorganismos son útiles en la producción de alimentos. Se utilizan en la elaboración de productos alimenticios como queso, pan, vino, etc.

En segundo lugar, los microorganismos están involucrados en la producción de vitamina K en el cuerpo.

por otro lado, los microorganismos provocan enfermedades que conducen a la morbilidad y mortalidad de los seres humanos.

Además, los microorganismos provocan el deterioro de los alimentos.

7 0
3 years ago
describe why it is essential for DNA to replicate prior to cell division. What would happen otherwise
AlexFokin [52]
Because the cells always diverted when break down
8 0
3 years ago
What does "standing jefferson on his head" have to do with the populist platform?
Monica [59]
<span>Standing Jefferson on his head is a example of the populist platform. The populist platform is a example of supporting equal rights for all populist. They need the right to vote, pay taxes, and earn a living for their families. Standing Jefferson on his head this a term that means we will over through the government.</span><span />
8 0
3 years ago
What organelles/cells houses the genetic material? ...?
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4 0
4 years ago
Help................. ​
Karo-lina-s [1.5K]

Answer:

Autotrophs are organisms that use light energy or energy stored in chemical compounds to make their own food.

1st order heterotrophs are organisms that eat only plants

2nd order heterotrophs are organisms that eat herbivores

3rd order heterotrophs: organisms that eat herbivores and other carnivores

Top group: carnivores

Explanation:

Producers are named as such because they produce their own food either by photosynthesis or chemosynthesis. These organisms are called autotrophs and include plants.

There are various levels of consumers. The first is first order heterotrophs, which feed on the producers. These are herbivores and include, for example, a deer feeding on grass.

The next is second order heterotrophs, which feed on the first order heterotrophs. E.g. an owl eating a mouse. These are carnivores

The next layer are also carnivores, third order heterotrophs which eat second order heterotrophs, for example a lion eating a zebra.

4 0
3 years ago
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