Complex sentence: Nusa Tenggara contains some of the smallest islands in Indonesia, and while many ecological problems affect both small islands and large landmasses, small islands suffer their particular problems and are highly exposed to external forces.
Split into simpler sentences: Nusa Tenggara contains some of the smallest islands in Indonesia. While many ecological problems affect both small islands and large landmasses, small islands suffer their particular problems and are highly exposed to external forces.