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Andru [333]
2 years ago
5

What Characteristics does north africa and sub africa of both regions have in common

Geography
1 answer:
Degger [83]2 years ago
7 0

North Africa has three main geographic features: the Sahara desert in the south, the Atlas Mountains in the west, and the Nile River and delta in the east. The Atlas Mountains extend across much of northern Algeria, Morocco and Tunisia.

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What process is a good example of a positive feedback that then reaches an equilibrium in an Earth system?
ipn [44]

Answer:

The relationship between the warming of the earth’s northern latitude and ice is a practical example of a positive feedback on the earth system.

Explanation:

A positive feedback is a process that brings about an increase in the process of interaction in the earth activities The warming of the northern latitude which is responsible for generating more heat through sunlight with time, usually results in an increase in the melting of ice bodies in the ocean by movement. This activity is regarded as positive because it is associated with an increase in the process. This process is directly proportional to the exchange activities that takes place and often leads to an equilibrium in the earth system.

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3 years ago
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Taly and Niger have opposite population demographics: Italy has an aging population with a high life expectancy, and Niger has a
Y_Kistochka [10]

Answer:T

Explanation:

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What is the most common rice dish in the Spanish speaking countries
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The most common rice dish would be arroz con pollo.
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3 years ago
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Following are a number of distinguishing characteristics of spiral and elliptical galaxies. Match each characteristic to the app
Pavlova-9 [17]

Answer:

  • 1. have a flattened disk of stars  ---     spiral galaxies.
  • 2. are rare in central regions of galaxy clusters    ---   spiral galaxies.
  • 3. contain many bright, hot stars    ---  Spiral galaxies.
  • 4. are more reddish in color   ---     Elliptical galaxies.
  • 5. contain primarily old, low-mass stars    ---  Elliptical galaxies.
  • 6. contain abundant clouds of cool gas and dust    ---  Spiral galaxies.
  • 7. have significant, ongoing star formation    ---   Spiral galaxies

Explanation:

  • Most galaxies that contain a central bulge that is surrounded by a rotating disk of arms that circles the galaxies are said to be a spiral galaxy.
  • About 60% of the galaxies are made up of spiral shapes and they are mostly found n low-density regions and are in the central of the galaxy clusters. Spiral galaxies often have beautifully shaped made form hot and young stars.
  • The more reddish in color indicates much older galaxies and are resemble that of an elliptical shape. Also, they consist of a little amount of dust and gas left. Spiral galaxy has rich gas and high star formations.
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3 years ago
( Canada ) The Environment - Preservation
MariettaO [177]

Answer:

Explanation:

<em>1. Air pollution</em>

There are two types of air pollutants: primary and secondary. Primary pollutants are emitted directly from their source, while secondary pollutants are formed when primary pollutants react in the atmosphere.

The burning of fossil fuels for transportation and electricity produces both primary and secondary pollutants and is one of the largest sources of air pollution.

Vehicle exhaust contains hazardous gases and particulate matter, including hydrocarbons, nitrogen oxides, and carbon monoxide. These gases rise into the atmosphere and react with other atmospheric gases, creating even more toxic gases.

Heavy use of fertilizers in agriculture is a major source of fine particle air pollution, according to the Earth Institute, affecting much of Europe, Russia, China and the United States. The level of pollution caused by agricultural activities is believed to exceed all other sources of fine particle air pollution in these countries.

Ammonia is a major air pollutant from agricultural activities. Ammonia enters the air as a gas from concentrated animal waste and overfertilized fields.

This ammonia gas then combines with other pollutants such as nitrogen oxides and sulfates from vehicles and industrial processes to form aerosols. Aerosols are tiny particles that can penetrate deep into the lungs and cause heart and lung disease.

Other agricultural air pollutants include pesticides, herbicides and fungicides. All this also contributes to water pollution.

<em>2. Water pollution</em>

Nutrient pollution is caused by sewage, sewage and fertilizers. The high levels of nutrients in these springs enter water bodies and encourage the growth of algae and weeds, which can make the water undrinkable and deplete oxygen, leading to the death of aquatic life.

Pesticides and herbicides applied to crops and residential areas are concentrated in the soil and carried to the groundwater with rainwater and runoff. For these reasons, every time someone drills a well for water, it must be checked for contaminants.

Industrial waste is one of the main causes of water pollution as it creates primary and secondary pollutants including sulphur, lead and mercury, nitrates and phosphates, and oil spills.

In developing countries, about 70% of solid waste is dumped directly into the ocean or sea. This causes serious problems, including harming and killing sea creatures, which eventually affects people.

<em>3. Pollution of land and soil</em>

Land pollution is the destruction of land as a result of human activities and misuse of land resources. It occurs when people apply chemicals such as pesticides and herbicides to the soil, improperly dispose of waste, and recklessly exploit minerals in mining.

The soil is also polluted by leaking underground septic tanks, sewer systems, leaching of harmful substances from landfills, and direct discharge of sewage from industrial plants into rivers and oceans.

Rain and flooding can carry pollutants from other already polluted lands to soil elsewhere.

Over farming and overgrazing as a result of agricultural activities causes the soil to lose its nutritional value and structure, causing soil degradation, another type of soil pollution.

Landfills can leach harmful substances into soil and waterways and create very unpleasant odors and are breeding grounds for rodents that carry disease.

<em>4. Noise and light pollution</em>

Noise is considered an environmental pollutant caused by domestic sources, public events, commercial and industrial activities, and transportation.

Light pollution is caused by prolonged and excessive use of artificial lighting at night, which can cause health problems for humans and disrupt natural cycles, including wildlife activities. Sources of light pollution include electronic billboards, night sports venues, street and car lights, city parks, public places, airports, and residential areas.

4 0
2 years ago
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