Answer:
The Nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary systems). It suggests that the Solar System formed from gas and dust orbiting the Sun.
Explanation:
Answer:
Nations typically trade with each other because they do not have resources. People want and need to buy items/supplies that are available in other countries. Foreign goods are also sometimes less expensive in other countries.
Explanation:
Urbanization refers to those areas of urban that can grow by increasing human population or migration of people from rural to urban areas & then it impacts our environment like deforestation, habitat loss and decreased of biodiversity.
Air pollution due to the high concentration of traffic and industries. Increased a greenhouse gas due to which it emissions a high levels of energy consumption and transportation. Urbanization affects our environment by improper or insufficient waste or smelly problem in urban areas.
Light pollution can be a ecological issues with different consequences. loss of green space and increase of heat island is also effected. It also affect our health due to increased risk of disease by overcrowding .
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Answer:
Africa
Explanation:
Africa by land area, is the second largest continent.
It covers a land area of about 11,608,000 square miles. <em>This is next to Asia in land area, which covers a land area of 17,212,000 square miles.</em>
Based on historical and archaeological evidence, humans have lived in Africa for more than 5 million years. This earned Africa the name "Mother Continent".
The first hominins <em>(primates which can be considered as directly ancestral to humans )</em> in Africa emerged about 6-7 million years ago, and among the earliest anatomically modern human skulls found so far were discovered at Ethiopia