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Svetlanka [38]
3 years ago
6

Why do astronomers from geocentric model to the heliocentric model?

Geography
1 answer:
zhannawk [14.2K]3 years ago
5 0
Ptolemy develops a geocentric model that has the planets moving around the Earth. However, in order to account for retrograde motion, he put the planets on circles that move in circles. * Copernicus suggests a heliocentric model. His model has the planets moving around the Sun in circular orbits.
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Which of the following is most accurate in helping pinpoint a time period on the geologic time scale during which a rock layer w
rewona [7]

Answer:

The answer is Option C: Index fossils.

Explanation:

Index fossils are used to identify geologic periods or faunal stages in rock layers. These fossils must have a wide geographic distribution and manifest obvious evolutionary trends to help geologists and others who need this geological data to better understand the time scale and to pinpoint a time period. For example, ammonites were common during the Mesozoic Era, but they were extinct by the Cretaceous period.  Geologists would use ammonites to help determine this time frame if present.

4 0
2 years ago
What are questions geographers would ask ?
Lelu [443]
1. <span>an expert in or student of anthropology
2. </span><span>an expert in or student of the development, structure, and functioning of human society
3. the people
4. </span>Urban geography<span> is the subdiscipline of </span>geography<span> which concentrates on those parts of the </span>Earth's surface<span> that have a high concentration of </span>buildings<span> and </span><span>infrastructure
5.  </span><span>are atmospheric scientists who study the Earth's climate
6.  </span><span>A geologist is a scientist who studies the solid and liquid matter that constitutes the Earth as well as the processes that shape it
7.  </span><span>is a scientist who studies fossils. If your basement is filled with fossils found while out on hikes, then you're an amateur </span><span>paleontologist
8.  </span><span>covers a wide range of topics, including marine life and ecosystems, ocean circulation, plate tectonics and the geology of the sea floor, and the chemical and physical properties of the ocean</span>
8 0
3 years ago
Imagine you are a city planner. You have the option of providing electricity to your city either through natural gas or through
shepuryov [24]

Answer:

Nuclear power

Explanation:

Even though it may cost a little more, it probably has the less effect on the environment. In times like these with climate change and the earth dying, it is important to do the best we can to reduce it. It has cons tho, nuclear power can be extremely dangerous if it goes wrong... Despite its safety measures, it's still pretty dangerous. Hope it helps!

6 0
2 years ago
Which of the following BEST explains the effect that the development of an alternative energy source would have on Nigeria?
harkovskaia [24]
You didn't place any of your following answers, which makes it difficult for people to help. What do you think it is? Out of the options that you have. 
5 0
2 years ago
Read the information. Answer the question at the bottom of the paragraph about baby boomers.
Nastasia [14]

The baby-boom generation is a generation that has had much different lifestyle than the previous generation, or rather the generation of their parents. The rights of the men and women have become equal, as well as the earnings. The marriage has been delayed for later stages of life, also having less children, and relatively high divorce rates.

On the long run, this generation will have a negative demographic impact on the United States. The reason for that is that the birthrates of this generation have dropped significantly, and it is also representing a large portion of the population, so as they age they will contribute to aging population.

An aging population can have serious economic and social impact, as the percentage of people that take money from the pension funds will increase significantly relative to the people that work. Also, as the baby-boomers age, the healthcare will be overrun by them, as deep age and diseases often goes hand to hand, so the expenses for the healthcare will be enormous.

5 0
2 years ago
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