Answer:
Air pressure is the weight of the atmosphere pressing down on the earth. It is measured by a barometer in units called millibars. Most barometers use mercury in a glass column, like a thermometer, to measure the change in air pressure.
Explanation:
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Answer:
B. Oceania
Explanation:
Oceania is not only the smallest ecological zone in the world, it is also the smallest continent in the world, with most of that continent being made up of Australia.
An ecological zone can also be called an ecozone and is characterized by a geographic area, where borders are composed of natural factors that occur in nature and not by factors created by humans. These natural boundaries, separate the regions due to differences in vegetation, soil, fauna, climate and other factors that occur naturally in the environment.
Answer:
Explanation:
has become fashionable in some circles to run down post-apartheid South Africa. This occurs not only in those sections of the media that believe African success is a contradiction in terms but also, more surprisingly, in quarters that strongly supported our transition to democracy and drive towards social justice. The Guardian's columns have not been exempt from criticism: Chris McGreal delivered some intemperate parting shots when he finished a 12-year stint as a southern Africa correspondent. We take such criticism seriously, but also find it inadequately based in fact and reality.
Take HIV/Aids. The latest survey by South Africa's human sciences research council confirms a UNAids report that shows falling levels of HIV infection among young South Africans. Prevention messages about condom use, abstinence and faithfulness are being taken to heart, especially by young people.
The correct answer is D. Total growth minus increases in capital and labor.
