Complex sentence: The airline tallies total tons of carbon released from the fuel burned each year in flight and ground operations then donates funds to FONAFIFO, a forest financing division of the Environment Ministry, to preserve important tracts of rainforest land in the Osa Peninsula.
Split into simpler sentences: The airline tallies total tons of carbon released from the fuel burned each year in flight and ground operations. They then donate annual funds to FONAFIFO, a forest financing division of the Environment Ministry, to preserve important tracts of rainforest land in the Osa Peninsula.