The subject "Spatial data and natural history" is plural, so the verb should be "are" instead of "is".
The correct spelling for this town in Namibia is "Katima Mulilo".
"Few" is used with countable nouns. "Plant life" is an uncountable noun, so "little" or "low" should be used instead.
The correct spelling for this town is "Otjiwarongo" with only one 'a'.
"Northwards" is an adverb; when used as a noun object of a preposition, "north" is the correct form.
The word "COASTAL" is misspelled as "COSTAL".
The subject "17% of Namibia's land" is singular (as "land" is an uncountable noun), so the verb should be "is".
