Final answer:
The sentence given is a compound-complex sentence because it contains two main clauses and one subordinate clause, which combines multiple ideas about Zimbabwe's climate and agriculture into a single sentence.
Step-by-step explanation:
The sentence in question is a compound-complex sentence, which is a sentence that contains at least two main clauses and one or more subordinate clauses. In the given sentence, 'Even though most people think of Africa as a desert, Zimbabwe has a hot, tropical climate' is the first main clause with a subordinate clause introduced by 'Even though'.
The second main clause is 'so mangoes, passion fruit, pineapples, and avocados grow well there,' which is connected to the first main clause with the coordinating conjunction 'so'. This sentence structure allows multiple ideas to be expressed efficiently in a single sentence, presenting a relationship between different facts and ideas concerning the climate and agriculture of Zimbabwe.