Final answer:
The biosphere reserves in Colombia are primarily located in mountainous regions as well as lowlands. The Andes Mountains and the Amazon Basin are key locations for biosphere reserves in the country.
Step-by-step explanation:
According to the given information and map of biosphere reserve locations in Colombia, it can be said that the biosphere reserves in Colombia are primarily located in mountainous regions as well as lowlands. This is supported by the fact that the Andes Mountains run from north to south through Colombia, and the country is larger than the nine most southeastern US states, with three ranges of the Andes Mountains running through it.
Additionally, the provided information states that the Amazon Basin, which is west of Venezuela and north of Peru, has a tropical and humid climate with rain forests and jungle fauna on the eastern slopes, indicating the presence of biosphere reserves in this region as well.