1. One of the airmass would be: continental polar
The continental polar airmasss has a cold temperature and low humidity level, and could usually felt by the people on the northern region of united states. The cold temperature come from the invasion of air that brought from the north pole to southward region
2. The answer is: Warm and wet
Maritime tropical air mass is created from the evaporation of warm tropical waters such as those that commonly found in regions such as Mexico. In united states, maritime tropical air mass would most likely felt by the citizens of southern states.
3.The answer is: Storm front
Weather front form some sort of boundary or limitation that separate two or more air masses that posses different density. Stationary, cold, and occluded front describe how these air masses could replace one another while storm front is not a known term in this context.
Answer:
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Answer:
Option (A)
Explanation:
The cretaceous period formed the last period of the Mesozoic era, marked by the occurrence of some distinct major events, and it began about 145 million years ago and ended by about 65 million years ago. The name Cretaceous is actually derived from the Latin word 'Creta' which means “chalk”. Chalk usually refers to the white colored, soft, powdery limestone rock that is primarily comprised of fossil shells. These are basically dominated by the calcite minerals.
By the end of this period, the dinosaurs were completely wiped out from the earth and the flowering plants started to evolve after the mass extinction event, which is commonly known as the Cretaceous-Tertiary boundary (K-T boundary).
Thus, the name Cretaceous was given because during this time period, there was abundant deposition of marine limestones (chalk), depicting that the sea level was comparatively higher than the present day.
Hence, the correct answer is option (A).
When atmospheric pollutants such as sulphur dioxide and nitrogen oxide mix with water vapor in the air, they are converted to sulpheric and nitrtic acid.These acids make the rain acidic which means acid rain. A second method of acid doposition is known as dry deposition
