Answer:
In developing countries children are needed as a labour force and to provide care for their parents in old age.
In these countries, fertility rates are higher due to the lack of access to contraceptives and generally lower levels of female education.
High fertility can impose costly burdens on developing nations.
In rural areas children are needed as labour on farms. In urban areas they are needed to work in the informal sector to earn money for their families.
Women have a large number of children as there is a high level of infant mortality
Answer:
Explanation:
<u>Renewable resources</u>
Renewable resources are the ones that can be replenished again and again i.e. they can't get exhausted after the use. On to other hand, non renewable energy resources can't be replenished again and again and can become exhausted after the usage .
For example ,
A) fossil fuel:
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Economically </u>fossil fuels are very cheap and hence widely used in economically poor areas.
Fossil fuels has the adverse effects on environment as their burning releases carbon dioxide in the atmosphere, which is the main reason for global warming.
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Benefits:</u> It is very cheap and hence anyone can afford it. Economies of poor countries are very much dependent on the
They are easily accessible and do not need much of technological advancement or heavy machinery.
<u>2. Solar energy:</u>
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Economical cost</u>: Economically it is very expensive and hence it's usage is limited to rich countries only. Silicon used in it is very expensive.
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Environmental: </u>It is environment friendly and so it is a clean source of energy.
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Benefits:
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In this world of drastically changing global climate, increasing pollution and with highly burdened energy resources, solar energy is turns out to be a Savior. It is pollution free and has unlimited abundance .
Answer:
The two major issues that lower the standard of living in North Africa is that North Africans have been living in poverty due to water shortages and urban problems such as overcrowding are serious issues. Other than that, the standard of living in North Africa is generally higher than than other parts of Africa
Explanation:
Kelvin lowered his prediction to 20 million years based on fresh data on the granite melting point.
<h3>What did Lord Kelvin believe about the Earth?</h3>
The Earth, according to Kelvin's theory, solidified from a molten state in which it was first all at a high temperature that was then maintained at a constant surface temperature.
<h3>How did Lord Kelvin calculate the Earth's age?</h3>
Using temperature gradients, Kelvin computed the age of the Earth and calculated that it was approximately 100 million years old. He was unaware that the Earth's mantle was convecting, which rendered his prediction inaccurate.
<h3>What was Lord Kelvin's theory?</h3>
According to Kelvin's law, heat from a high-temperature energy source cannot completely be transformed into "work." A portion of the heat will be transformed into poor energy and "lost" in the process. This demonstrated that a heat engine cannot be completely efficient.
To learn more about Lord Kelvin's theory visit:
brainly.com/question/4929740
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