By what the two poles of the earth
are covered?​

Explanation:

Because all longitudinal lines begin from it, the North Pole has no time zone. The pole is surrounded by the Arctic Ocean, where the water is 13,400 feet (4,084 meters) deep and usually covered with drifting ice 6-to-10 feet (1.8 to 3 m) thick.

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The Two poles are covered with thick ice and sorrounded by Arctic Ocean which is frozen.

more info ? ? i don't understand what the question is

explanation:

the term hydride is commonly named after binary compounds that hydrogen forms with other elements of the periodic table. hydride compounds in general form with almost any element, except a few noble gases. the trends and properties vary according to the type of intermolecular force that bonds the elements together, the temperature, its molecular masses, and other components. hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. the three major groups are covalent, ionic, and metallic hydrides. formally, hydride is known as the negative ion of a hydrogen, h-, also called a hydride ion. because of this negative charge, hydrides have reducing, or basic properties. its special characteristics will be further discussed.

explanation: