Answer:
The correct answer is A. If you live in the Midwestern United States or Canada and you experience several days of winter temperatures below 20°C with clear weather, you are undoubtedly experiencing a Continental Polar air mass.
Explanation:
Continental polar masses are air masses that are cold and dry due to their region of origin. Polar continental air masses that affect North America form in further inland Canada.
Both the continental polar air masses and the Arctic air masses are highly stable; the temperature gradient in the lower layers is much lower than the adiabatic one, and stratiform clouds are predominant.
The answer is B. to draw investment from Western oil companies
Elements in the ecosystems are mutually dependent on each other
Explanation:
The ecosystems are very complex. Basically, they represent a community of living organisms in conjunction with the non-living components of the environment, and all together acting a single system. All the living organisms have influence on each other, but also on the non-living components of the environment, and vice versa. This results in the system being a ''well oiled machine'', but also making it very fragile, as if one component is eliminated, everything will suffer.
- The ecosystems are defined by multiple factors, including the latitude, climate, topography, and the living organisms themselves.
- Everything is dependent on many other components in an ecosystem, so drastic changes often have devastating effects, resulting in extinctions.
- The changes in the ecosystems occur because of the natural cycles, impact with space objects, or more recently because of the human activity.
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Mid- Atlantic ridge is a part of
constructive plate boundary or divergent plate boundary. This linear feature
lies in the midst of a two tectonic plates that are apart from each other.
Active divergent plate boundaries usually take place in the middle of oceanic
plates then become mid-oceanic ridges. In fact that a Mid- Atlantic Ridge is
mainly an underwater feature, some of its segments have an altitude that
extends above sea level. Its boundary is situated along Atlantic Ocean's bottom
and areas of the world's longest mountain range.
