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Choose the correct variant in brackets.The current theory for star formation is that stars form within ( giant molecular / dwarf ionized ) clouds. Stars form where there are ( diffuse regions / dense cores ) within clumps of gas and dust in these clouds. The formation of ( an earth-like planet / a protostar / a black hole ) involves the rapid collapse of infalling gas onto a dense core due to gravity. As a protostar shrinks, its rate of spin ( decreases / increases ). This allows subsequent infalling gas to accumulate at the ( poles / equator ) of the protostar; this material tends not to accummulate at the protostar's ( poles / equator ) due to its spinning motion. As the protostar continues to evolve, it emits infrared radiation. When it has nearly reached its final mass, it is called a ( neutron star / Wolf-Rayet star / T Tauri star ). These objects produce strong stellar winds.

Answers

Answer 1
Answer:

The current theory for star formation is that stars form within dwarf ionizedclouds.

The Universe

The question is fill in the blanks and the answers are written below.

Stars form where there are dense cores within clumps of gas and dust in these clouds.

The formation of a protostar involves the rapid collapse of infalling gas...

As a protostar shrinks, its rate of spin decreases.

This allows subsequent infalling gas to accumulate at the equator... accumulate at the protostar's poles due to its spinning motion.

When it has nearly reached its final mass, it is called a Wolf-Rayet star.

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Answer 2
Answer:

Answer:

The current theory for star formation is that stars form within giant molecular clouds. Stars form where there are dense cores within clumps of gas and dust in these clouds. The formation of a protostar involves the rapid collapse of infalling gas onto a dense core due to gravity. As a protostar shrinks, its rate of spin decreases. This allows subsequent infalling gas to accumulate at the equator of the protostar; this material tends not to accummulate at the protostar's poles due to its spinning motion. As the protostar continues to evolve, it emits infrared radiation. When it has nearly reached its final mass, it is called a Wolf-Rayet star. These objects produce strong stellar winds.

Explanation:

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Great Britain colonized areas all over the world. Which of the following is an effect of British rule? a. The Queen rules all former colonies.
b. Rugby is popular throughout the world.
c. English is spoken in more countries than any other language.

Answers

Answer:

c is the answer because English is spoken in many countries which Britain colonised

Answer:

It is C

Explanation:

Because when the lands were colonised the people spoke english and so they continued with it are only changed it a little bit overtime for example accents

What positioning system may give coordinates as decimals?

Answers

Decimal degrees. Such degrees are a good alternative to using degrees, minutes, and seconds (DMS). Similar to latitude and longitude, the values are bounded by ±90° and ±180° respectively.

ANSWER:

Units of measurement will help to measure the decimal degree for identifying latitude and longitude.

EXPLANATION:

  • Coordinate system is described as a set of rules and measure due to which it grants access over integrating over a certain place or area.
  • The coordinates system does help to display the various terrain, lands, mountains and other structure of an area.
  • In geographical information system, it is considered to be two types coordinate system in which one study is made by taking global coordinates and projected coordinates.

Which of the air pollutants has been the most difficult to reduce?

Answers

Answer:

Ozone

Explanation:

Ozone is a secondary photochemical contaminant, that is, it is formed from primary pollutants emitted into the atmosphere (mainly nitrogen oxides and volatile organic compounds) in the presence of solar radiation.

The photochemical formation of ozone in a given region is the result of a complex chemical process in which, from its precursors (nitrogen oxides and volatile organic compounds), a multiplicity of different species intervene, interacting with each other according to different reactions, resulting in a highly nonlinear final balance. A transcendental consequence of this nonlinear chemistry is that in a given region, and depending on the initial conditions of departure, the action on the different precursors can have very variable consequences, it being possible that it leads both to an increase and a decrease of ozone concentrations.

This makes short-term measures to reduce air pollution in a certain area, of a restrictive type (such as limiting the operation of heat generators, restricting the circulation of vehicles, regulating traffic to make it more fluid, restricting certain industries and activities) they are not as effective with ozone as with other types of pollutants, as they are a secondary type pollutant and may even in some cases produce a counterproductive effect: for example a drastic reduction in traffic, causing a decrease in NOx levels in the atmosphere, can prevent the decrease of ozone levels that had previously formed.

In the fight against ozone it is necessary to apply medium and long-term measures aimed at limiting emissions of ozone precursor pollutants into the atmosphere.

They do not serve short term strategies. Medium-long term strategies for the reduction of ozone precursors must be devised:

- Less polluting vehicles (NOx, VOCs)

- Use of public transport (NOx, VOCs)

- Energy saving (NOx)

- Use of non-polluting energies (NOx)

- Reduction of solvent use (VOCs).

If you made a model of Earth that was 10 cm in radius, how high would Mount Everest rise above sea level?

Answers

In the scale model, Mount Everest would have a height of 0.0138 cm.

What is the real radius of the Earth?

The Earth is not a perfect sphere, in some places it is flattened and in other places it is not, because of this characteristic the radius of the Earth is not the same everywhere in the world. In the polar zones the radius has a distance of about 6357km, while in the equatorial zones the radius is 6378km.

In a scale model of the Earth in which the radius is equivalent to 10cm, each cm would be equivalent to 635.7km. We must keep in mind that Mount Everest has a height of 8.8 km above sea level.

According to the information above, in the scale model, Mount Everest would have a height of 0.0138 cm.

8,8km ÷ 635,7km = 0.0138.

Learn more about Earth in: brainly.com/question/24878669

Municipal boundaries are used toA. mark the limits of city governments
B. divide states and group nearby cities
C. separate areas represented in the country's government
D. mark boundaries between countries

Answers

Answer:

A is the answer

Explanation:

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Which of the following was not a characteristic of the 2010 Haiti earthquake?A. There was a loss of electricity and water.
B. The quake hit the capital city.
C. The quake registered at 7.8 on the Richter scale.
JUL

Answers

Answer:

A

Explanation:
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