Outer core is composed by liquid iron and nickel while inner core is composed by solid iron and nickel.
Answer: B. outer core.
Answer:
Option (A)
Explanation:
Gas giants and ice giants are collectively known as the Jovian planets. The gas giants are Jupiter and Saturn whereas the ice giants are Uranus and Neptune. They are called ice giants because they are far away from the sun and the temperature in that region is very cold.
They are both comprised of the atmospheric gases namely hydrogen and helium along with the presence of some other gases such as ammonia and methane. But<u> ice giants and gas giants differ from one another by the presence of a layer that contains the liquid metallic-hydrogen layer in the interior of gas giants</u>. It is absent in the ice giants. This metallic hydrogen layer is quite big in Jupiter than in Saturn, which could be due to the bigger size of Jupiter.
This layer of liquid hydrogen has formed due to the extremely increasing pressure and temperature condition that converts
the gaseous hydrogen into a liquid form.
Thus, the correct answer is option (A).
From the lower plate which melts in the earths mantle.
Answer:
D. Salt wedge estuary
Explanation:
The Chesapeake Bay is the largest estuary in the United States. The Bay is located in the Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula with its mouth of the Bay at the south end located between Cape Henry and Cape Charles. With its northern portion in Maryland and the southern part in Virginia, the Chesapeake Bay is a very important feature for the ecology and economy of those two states, as well as others surrounding within its watershed. More than 150 major rivers and streams flow into the Bay's 64,299-square-mile drainage basin, which covers parts of six states and all of Washington, D.C. / District of Columbia.