Answer:
There are 195 countries in the world comprises of 193 countries that are member states of the United Nations and 2 countries that are non-member observer states
Answer:
b. There is insufficient contrast in surface type (land vs. ocean) in the middle latitudes.
Explanation:
The sources of air masses can be produced or at very high latitudes because they can carry big amounts of air from the top of a mountain till the bottom by the differences of pressure and temperatures. This kind of air mass is called continental.
In the other hand, in a low latitude, the air coming from the sea, try to reach higher latitudes, again, by pressure and temperatures differences. These kind of air masses are called maritime.
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The ocean floor or seabed can be divided into three major regions: the continental margins, abyssal plains, and mid-ocean ridges.
Many factors have contributed to increase in life expectancy. Examples such as medical advancements in modern medicine, less wars being fought, improvement in sanitation, eating a healthy diet, a overall healthier lifestyle (for example, people don’t smoke cigarettes as much as the olden days) and easier access to education.
A C and D. It cannot be b because scientists have warned people in the past about volcanoes and their possibility for erupting. Earthquakes cannot be predicted however there are warning signs one can look for.