Wht are the definitions of these words. Communication systems

Import dependency

Opencast mine

Hinterland

Carbon capture

Communication system is a collection of individual communications networks

Hinterland is the remote areas of a country away from the coast or the banks of major rivers.

Opencast mine is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow.

Carbon capture is the process of capturing waste carbon dioxide usually from large point sources, such as a cement factory or biomass power plant, transporting it to a storage site, and depositing it where it will not enter the atmosphere.

Import dependency  is to import goods or raw materials to other countries for use in your own country.

Explanation:

Hope that helps Good luck

a and b because with the other three, they simplify to something else.

answer at the divergent plate boundary in the middle of the ocean;