Questions

Black

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

Oceania is a geographic region comprising Melanesia, Micronesia, Polynesia and Australasia. In Oceani, most towns began as Colonial Ports.

Karst topography is a landscape formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum.

'and made India' should be used to make the sentence grammatically correct. You use 'made' when referring to things already done in the past.'Make' is present and its continuous its still been done unlike 'made' which refers to what has been done

Magma is molten rocks beneath the earth's crust. Hot springs are heated geothermally by underlying magma.

The first computers used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms.