Questions

The calm centre of the anticyclonic gyre in the North Atlantic, comprising a large eddy of surface water, the boundaries of which are demarcated by major current systems such as the Gulf Stream, Canaries Current, and North Atlantic Drift. The Sargasso Sea is a large, warm (18°C), saline, which is characterized by an abundance of floating brown seaweed (Sargassum).

Magnetism in materials is due to circular motion of electrons.

Silver is the best conductor of both heat and electricity among metals with a thermal conduction value of about 430 W/(mK).

Gold and copper both come respectably close to silver.

Copper being significantly less costly it is often chosen over silver in many applications.

Alternative (a) refers to a delta

The collections of entities of a particular Entity Type are grouped together into an entity set.

A mountain is what has roots that nobody sees, Is taller than trees, Up, up it goes, Yet it never grows.

Rainfall and addition of fresh water from rivers reduce salinity neat the coasts.