Name the polar and tropical air masses that affect U.S. weather. Describe the pattern of movement across the continent and patterns of precipitation associated with warm and cold fronts.

Answer:

Option (E)

Explanation:

The estuarine environment is usually referred to that region where there occurs constant mixing of the fresh and saline water. It can also be simply said as the meeting point of the freshwater and saline water. It is mainly comprised of fine-grained sediments such as clay, silt and fine sand, which are transported from both the sea and the rivers.

It also includes the biological habitat as there occurs different species of organisms in this environment. Pollution also occurs in this region, and the supply of groundwater also takes place here. Storm is common in this region when the weather is not favorable.

The marinas are not included as it covers the vast oceans and the deep-sea environment, and which is not a part of the estuarine ecosystem.

Thus, the correct answer is option (E).

Answer:

E. marinas.

Explanation:

• An estuary is an enclosed coastal body that is formed by the blackish water flow gorm the rivers and has free connection to the open plains and formal transitional zones and includes the tides and the waves and influx of the river water as the favor the biological habitat of the various species and they helps in the trapping of the pollutants and acts as storm buffers and contribute to the groundwater.

The answer is B, 7.8 billion

Answer:

Eurasia

Neanderthals inhabited Eurasia from the Atlantic regions of Europe eastward to Central Asia, from as far north as present-day Belgium and as far south as the Mediterranean and southwest Asia. Similar archaic human populations lived at the same time in eastern Asia and in Africa.

Answer:

With the population moving West, the old Northwest was made up of

d.Ohio, Indiana and Illinois.

Explanation:

Other states that made up the old Northwest were Michigan, Wisconsin, and a portion of Minnesota.  New York, Pennsylvania, Cincinnati, and Virginia were never part of the old Northwest.  The old Northwest was awarded to the United States after the 1783 revolutionary war.  Geographically, the old Northwest included the land between the Great Lakes, the Mississippi River, and the Ohio River.

Answer:

As explained below.

Explanation:

• An ocean gyre is a large system of circulation of oceanic currents, by the global winds and global forces created by the rotation of the planet on its axis.

• These gyres help in driving the conveyor belt that circulates the oceanic water throughout the planet. Various types of Oceanic Gyres are found on the globe like tropical, subtropical, and subpolar gyres.

• The tropical gyres are less developed ad tend to be found in the east to west, north to a south extent. Formed by pacific equatorial currents system. the subtropical gyre is a system of the high-pressure zone that moves in a clockwise direction from the northern hemisphere, and anticlockwise in the southern hemisphere.

• The subpolar gyres found at a height of 60 degrees, consists of clockwise circulation of winds in low-pressure areas around the northern hemisphere. Like the Aleutian and Icelandic low.

• The recent development of climate change and the unequal distribution of heat floes have accelerated the process of the formation of gyres.