Last two sentences. new years and amesh
Answer:
hope it's the right answer:warm air stays below cold air
Explanation:
warm air stays below cold air:the troposphere is heated from the ground, so temperature decreases with altitude. Because warm air rises and cool air sinks.
the lower atmosphere is heated by the ground:*the troposphere is heated from the ground*
the troposphere is a stable layer:*the troposphere is unstable*
ozone blocks the sunlight:*in the stratosphere, temperature increases with altitude.The stratosphere contains the ozone layer, which protects the planet from the Sun’s harmful UV radiation*
Answer:
The arrival of the Europeans in the Americas changed the culture, economy and population of the continent permanently.
Explanation:
The implications of the European arrival in the Americas are possibly endless, but several of the areas which changed the most were:
- Commerce: There was a complex exchange of goods of all kinds established between the Old and New Worlds.
- Population: European diseases took a huge toll on indigenous populations and European migration and the slave trade from Africa changed the demographics of the Americas.
- The political systems of the now independent American countries from Canada to Chile reflect a European political foundation for better or for worse.
- The rich cultures of the Americas were forged from a combination of cultures from three continents.
Answer:
the negative effects are sometimes referred to as "brain drain". The notion of the brain drain is largely unsupported in the academic literature. According to economist Michael Clemens, it has not been shown that restrictions on high-skill emigration reduce shortages in the countries of origin.
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