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patriot [66]
4 years ago
11

How do scientists know that dark matter and dark energy exist even if we can not see them

Biology
1 answer:
Gre4nikov [31]4 years ago
7 0

Answer:

We only know it's there because we can see the effect of its gravity. Scientists study dark matter by looking at the effects it has on visible objects. Scientists believe that dark matter may account for the unexplained motions of stars within galaxies. Computers play an important role in the search for dark matter information.

Explanation:

Hope That helps!

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Choose any one of the consumer services companies and write an essay of about 500 words on how a diverse economy such as the Uni
zaharov [31]

Answer:

let's take the example of Walmart, which has the large presence in the United States and is an important part of the Consumer Services Industry.

Explanation:

Walmart began with just one store but has grown all over the country to many unique aspects of the American economy and demographics. The United States, in contrast to what many people assume, is a very diverse country.

The culture of New England is very different from that of the Bible belt. Similarly, the African American culture of Georgia is different from the casual California where there is a vast Hispanic population.

Walmart saw an opportunity in this diversity and has grown by catering to needs of all these consumers. Communities with highly dense Hispanic population stocked food items that were very different than can be found in Jewish neighbourhoods and vice verse.

This enabled Walmart to connect with each community and grow with them over the generations.

In all this, Walmart prides itself in providing benefits to US army veterans and provides jobs to women from low-income backgrounds and the disabled.

In all this, Walmart does face a number of different challenges, including:

A slowing economy can hit the profits of the company

Competition from other companies such as Costco and even international players like Aldi and Lidl can decrease their market share

Online rivals such as Amazon have long been identified as a threat to the company and is one of the biggest challenges facing the consumer service industry.

Companies like Amazon are not only involved in retail but also in selling movies, music, etc that can completely challenge the consumer service sector

6 0
3 years ago
Read 2 more answers
How many kilowatts does my central air conditioning use?
nignag [31]
It depends on the model of your central A/C unit and size of your home. 
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3 years ago
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The area between Z lines is the
Nataly_w [17]

Answer:

Sarcomere

Explanation:

A myofibril or muscle fiber under an electron microscope shows alternate light band and dark bands.  These bands give the skeletal muscle and cardiac muscle a striated appearance. The light band is called the I- band or isotropic band, and the dark band is known as A- band or anisotropic band. In the center of the I-band Z-line is present. It is discovered from a German term Zwischenscheibe (between the disc). The portion of myofibril between one Z-line to the next Z-line is called sarcomere.

3 0
3 years ago
What commonally do all flowering plants share with all nonflowering plants?
Shkiper50 [21]

Answer:

The necessary structure for asexual reproduction

Explanation:

3 0
3 years ago
What do all the acids have in common?
-BARSIC- [3]

Answer:

Both acids and bases are electrolytes which means that they're good conductors of electricity. Acids and bases both produce ions in water solution. Acids release hydrogen ions (H+) whereas Bases release hydroxide ions (OH-). The process of mixing acid or a base in water is an exothermic one.

3 0
3 years ago
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