Complex sentence: Recently the Marshall Islands have begun to call for international aid to ameliorate the effects of climate change on the Marshall Islands as well as calling for a joint international effort to slow the rate of climate change especially in regards to increasing sea levels.
Split into simpler sentences: Recently the Marshall Islands have begun to call for international aid to ameliorate the effects of climate change on the Marshall Islands. In equal measure the Marshall Islands have called for a joint international effort to slow the rate of climate change especially in regards to increasing sea levels.