Answer:
Explanation:
8
When we talk about the "shape" of the universe. It is its intrinsic shape, not the embedding of the universe within a larger space.
It does make sense to talk about the intrinsic shape. Properties like "curvature" can be measured from inside a shape, you don't need suppose that the universe is "in" something to talk about its shape.
Now the space of the universe is three dimensional, this creates visualisation problems. So I'm going to first talk about an imaginary 2d universe:
A 2d universe could be flat, with a curved boundary (like a disc) Or it could be flat with no boundary (an flat infinte plane). Or a 2d universe could be intrinsically curved. If it has positive curvature it could be like the surface of a ball (positive curvature, finite with no boundary) Or shaped like a bowl (positive curvature) Alternatively it could have negative curvature: it could be shaped like a "Pringles crisp" These have negative curvature (this can happen with or without a boundary). Finally there could be regions with different curvature: positive in some parts, negative in others.
The same possibilities exist for our universe: It could be flat (with or without boundary) It could be positively curved (This is intrinsic curvature and your brain can't visualise this for a 3d shape) Or it could be negatively curved (again, don't try to visualise this for a 3d shape, you can't). In the case of positive curvature, it could be finite and unbounded, but for negative curvature, it must either have an edge, or be infinite.
So mathematically these are the possibilities. What does the science say?
We can measure the curvature on large scales. Our measurements are not perfect, there is some room for error. We measure the large scale mass/energy density of the universe, since curvature is caused by gravity, and gravity is caused by mass and energy. If the mass/energy density is > 1 then space would be positively curved. We actually find that the energy density is 1.00±0.02 That is the universe is either flat, or very nearly flat.
No there are profound problems with supposing that the universe has a boundary. But there are also problems with supposing it to be infinite. Scientifically, no edge has ever been detected. So when we build models of the universe, we will generally suppose to have no edge.
Thus our "best guess" is that the universe is uncurved and infinite.
How does afforestation help to balance the environment? help
we breath in oxygen and breath out carbon dioxide. since we get carbon dioxide from trees then replacement of trees mean we have more trees
Explanation:
deforestation is the indiscriminate felling of trees while afforestation is the replacement of felled down trees.
Am I right? I need help
Why has the North American Free Trade Agreement (NAFTA) between
Canada, the United States, and Mexico resulted in some Mexican farmers
going out of business?
O A. Without tariff protection, they could not compete against lower-
priced U.S. farm products.
B. Without an open border, they could not bring their goods into the
United States to sell.
O C. Without regulation, they could not maintain a clean enough
environment to farm safely.
O D. Without a minimum wage, they could not find workers willing to
work on their farms.
Answer:
D:Without a minimum wage, they could not find workers willing to
work on their farms.
Explanation:
NAFTA's purpose was to encourage economic activity among North America's three major economic powers: Canada, the U. S., and Mexico. Proponents of the agreement believed that it would benefit the three nations involved by promoting freer trade and lower tariffs among Canada, Mexico, and the United States.
Question 7 of 40
Which of the following best describes a natural resource? As
A. Currency used to exchange for or purchase products
B. A cultural or religious ideology used by humans
C. Products created by humans for improved living conditions
D. A substance, energy source, or organism used by humans
SUBMIT
Answer:
D. A substance, energy source, or organism used by humans
Explanation:
Its not man made like the others
On the map below, the star is marking which of the following bodies of water?
Mediterranean Sea
Persian Gulf
Caspian Sea
Black Sea
Answer:
Black Sea
Explanation:
Cold water of the same source forms lather hardly with soap. Why?
Answer:
Elaborate on the question
Explanation:
kepentingan peringkat hilir sungai kepada manusia
The mountains of the northern part of the Nation block the cold and wind that blows towards Nepal from the central asia
Answer:
Is it suppose to be a true or false or what?
help me asap plz
^﹏^
Answer:
French Guiana - controlled by France
Suriname - Official language is Dutch
Ecuador - Mostly exports of bananas and oil; population is mostly mestizo
El Salvador -The highest population density in the region of South America
it was correctly placed lol
Explanation:
How many points appear in this figure?
Answer:8 points
Explanation:and bc i did it
Answer:
8 i don't know
Explanation:
A(n) ________ is a cone of debris that forms where an ephemeral stream emerges from the confines of the canyon. Its runoff spreads over the gentler slopes at the base of the mountains and quickly loses velocity, dumping most of its sediment load within a short distance.
Answer:
alluvial fan
Explanation:
Alluvial fans are a mix of sediments made up of mostly sand and gravel that are created when canyons, hills or mountains interact with flowing water. They help with the sustenance of life and irrigation farming as the main source of water.
Which country is the star marking on this map of Africa?
A. Libya
B. Sudan
C. Somalia
D. Egypt
Option B (Sudan)
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Which method of showing Earth's surface is the most accurate?
A.
an equal-area projection
B.
a scale-model globe
C.
a Mercator projection
D.
a Robinson projection
Answer:
B
Explanation:
The most accurate way of showing the Earth's surface is by a scale-model globe
The Method of showing Earth's surface is the most accurate scale-model globe. Thus the correct answer is B.
What is Earth?The only celestial object supporting life is Earth, located third from the Sun. Land, air, water, and energy all exist on Earth. Mountains, valleys, and plains are all present in the region.
An Earth or other astronomical body sphere-shaped model is called a globe. Unlike maps, which affect the surface they represent besides reducing it down, globes provide similar functions. Maps cannot compare to the global globe.
A globe is the most accurate way to depict Earth's curved surface. A globe is the greatest way to represent Earth. A scale and a global latitude and longitude are typically present on globes.
Therefore, option B a scale-model globe is appropriate.
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The direction and frequency of hunter-gatherer migration depended on
A) the movement of game and the seasonal growth of plants.
B) the shifting of climate patterns.
C) the arrival of imperial armies and other invading forces.
D) each group's size and the ability to run over long distances.
E) mathematical processes.
Which of the following maps below is a satellite image of Egypt?
Map A
Map B
Map C
none of the above
Answer:
id say map A
Explanation:
Map A which was below shows the satellite image of Egypt.
An object that has been placed into orbit in space on purpose is known as a satellite or artificial satellite. There are several applications for satellites, including communication.
A satellite is a body that orbits a planet, star, or moon. For instance, the fact that Earth orbits the sun makes it a satellite. The moon is a satellite as well because it revolves around Earth. The term "satellite" typically refers to a device that is launched into space and orbits the Earth or another celestial body.
In addition to being the foundation of cable and network TV, satellites also deliver television signals directly to homes. These satellites transmit signals to smaller stations that transmit the signals locally over cables or the airways from a central station that produces programming.
Hence, option A is correct.
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posters with the key features of the ideal student in mind
HELP WILL MARK BRAINLIEST!! ONLY TWO ANSWERS TO ANSWER FROM!!
What is likely true about the tilt and location of a place if the weather is cold and snowy?
A. The axis is tilted away from the sun, and the location is in the mid-latitudes
B. The axis is tilted away from the sun, and the location is in the low-latitudes.
Since it receives less ultraviolet light and is less likely to have an impact on the globe to cause a particular spot to be hot, the Earth becomes colder the further it is from the star.
Thus, Option A is correct.
What are mid-latitude and low-latitude?The northern hemisphere's region between 30° and 60° latitude can be generically referred to as the mid-Latitude Region. About 36 nations from the main regions of East Asia, Central Asia, Central, and Eastern Europe, Western Europe, and some parts of North America are included in the Northern Hemisphere's Mid-Latitude.
Low latitudes are defined as areas that are between 30 degrees N/S and the Equator (0 degrees N/S). Between 30 degrees N/S and 60 degrees N/S are the middle latitudes. Additionally, the high latitudes are found between the poles (90 degrees N/S) and 60 degrees N/S.
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What effect do tax incentives have on economic development? A. Tax incentives have no impact on economic development. B. Tax incentives only allow the rich to get richer and the poor to get poorer. C. Tax incentives encourage international trade of human or physical resources. D. Tax incentives only affect economic development when a nation creates an important technology. Please select the best answer from the choices provided. A B C D
Answer:
A and B is the correct answer
HELP HELP ASAPPP!! PLEASE HELP NOW PLEASE RIGHT NOW
Answer:
claiming a God given right to rule----- divine right
claiming to be the only group doing right----ideology
maintaining absolute control over the lives of the people---fear
keeping citizens in line through fear and violence---- totalitarianism
3.1 Is the Afdaksrivier a perennial or non- perennial?
Answer:
non-perennial
Explanation:
Perennial rivers are also known as permanent rivers. They flow throughout the year. It is indicated by the river channel which touches water table throughout the year.
Periodic or non-perennial rivers are those rivers which do not have a constant flow throughout the year. It mainly consists of those rivers which flow only during the rainy season.
What is a geographic factor?
Answer:
Geographic factor is the study of the natural features of the earth's surface, including topography, climate, soil, vegetation, etc., and man's response to them.
It is also the natural features of a region and an arrangement of constituent parts; plan; layout.
Which region experiences only two different climates? Midwest, Northeast, Southwest, & Pacific
Answer:
Explanation:
The Northeast is characterized by a fairly diverse climate, with bitterly cold winters and semi-humid summers, especially to the south.
John's dad makes wooden furniture, but there are many furniture makers in his state. John's dad decides to ship his furniture to the next state to
be sold, as there are fewer people selling furniture in that state. Which concept MOST impacts this movement of goods?
ОА
transportation
OB.
distance
oc intervening opportunity
OD. supply and demand
Answer:
D. supply and demand
Explanation:
John's dad is choosing to market his goods where supply is lower, assuming he can capture a larger share of the demand that he can locally. In the scenario described, distance and transportation costs appear not to be significant.
A set of beliefs about the way things should be that are used to justify public policy is best defined as which of the following?
A. Terrorism
B. Mandate
C. Nongovernmental organization
D. Ideology
Select ALL the correct answers.
What are three positive effects for countries that participate in international governmental organizations and nongovernmental organizations?
O providing a neutral means of communication between countries
Dincreasing efficiency within individual governments
choosing political leaders for participating countries
O working together to deliver humanitarian ald
settling political disputes without military involvement
Reset
Next
Answer:
What are three positive effects for countries that participate in international governmental organizations and nongovernmental organizations?
providing a neutral means of communication between countries working together to deliver humanitarian and settling political disputes without military involvementThree positive effects for countries that participate in international governmental organizations and nongovernmental organizations are:
Providing a neutral means of communication between countriesincreasing efficiency within individual governments.Working together to deliver humanitarian and settling political disputes without military involvement. Therefore, option (a), (b), and (d) is correct. What is governmental organizations?Governmental organizations are businesses created by or controlled by the government. Agencies, bureaus, boards, commissions, courts, departments, representatives, political subdivisions, and tribunals are a few examples.
Countries can communicate and work together on matters of shared interest through international governmental organizations (IGOs) and nongovernmental organizations (NGOs). By giving access to resources and knowledge that would not be accessible domestically, they also aid in boosting efficiency inside individual administrations.
As a result, the significance of the three positive effects for countries that participate in international governmental organizations and nongovernmental organizations are the aforementioned. Therefore, option (a) (b) and (d) is correct.
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When continental polar air moves over a relatively warm lake, such as one of the Great Lakes, the air mass acquires both heat and moisture, resulting in ________ on the land leeward of the lake. Group of answer choices
Lake effect snow is the result.
Lake effect snow is a heavy and localized snowfall that is traceable to the great lakes. During the winter season, this type of snow results when cold air moves over lake waters that are warm.
Given that the temperature of the lakes are more than that of the cold air that came in contact with the lake, it would cause moisture to go up.
This moisture and high temperature is what combines together for there to be snow.
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Explain how species within the natural environment work together.
Answer:
This happens by the process of natural selection. By natural selection, the nature of the species gradually changes to become adapted to the niche. If a species becomes very well adapted to its environment, and if the environment does not change, species can exist for a very long time before they become extinct.
The ones that will be discussed in this article are competition, predation, herbivory and symbiosis. These are not the only types of species interactions, just the most studied — and they are all parts of a larger network of interactions that make up the complex relationships occurring in nature.
Explanation:
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What factors affect water quality
Answer:
Many factors affect water quality
Sedimentation
Runoff
Erosion
Dissolved oxygen
pH
Temperature
Decayed organic materials
Pesticides
Toxic and hazardous substances
Oils, grease, and other chemicals
Detergents
Litter and rubbish
Answer: There are so many factors which may/will affect the quality of water
Explanation: such as
i) Acid : it may come from acid rain and etc.....
ii) toxic waste materials : especially from high operating factories
iii) Oil spillage: accidents during oil shipping etc....
iv) littering: dumping of trash and rubbish
v) toxic substances; may come from harmful chemicals which are used in fishing etc... pesticides
vi) bathing and washing in water bodies with animals affects water quality
vii) dumping of waste products into water bodies
viii) mining underground activities
ix) Erosion may also affect water quality
x) leakages: especially in sewage pipes
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The chart below shows the hourly wage for the employees at the local newspaper office. What is the hourly wage of most of the employees?
A. Between $10 and $20
B. Between $20 and $30
C. Between $30 and $40
D. Between $40 and $50
Answer:
c. between $30 and $40. B. between $20 and #30
Answer:
the answer is b 20 and 30
Explanation:
very simple the one that is bigger is the answer also dont trust the person above/
What type of galaxy is described as having an elongated center and spiraling arms?
Barred spiral
Spiral
Irregular
Elliptical
Answer:
barred spiral
Explanation:
The galaxy which is described as having an elongated center and spiraling arms is a Barred spiral. Thus the correct answer is A.
What is Galaxy?A galaxy is a large collection of planets, celestial bodies, gas, and particles. Gravity keeps a galaxy together. A big black hole also resides in the center of our galaxy, the Milky Way.
A spiral galaxy termed a barred spiral universe has a star-focused central bar structure. In almost two-thirds of spiral galaxies, streaks are present.
Stars no more revolve in circular orbits when a large barrel arises instead, the bar has bent the stars' orbits, which is causing them to move into more circular orbits that pass close to the center of the galaxy.
Therefore, option A Barred Spiral is the appropriate answer.
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