Here are the climate-related sections of speeches by MPs during the Commons debate European Agenda on Migration.
Full text: https://hansard.parliament.uk/Commons/2015-12-14/debates/15121441000002/EuropeanAgendaOnMigration
20:02 Keir Starmer (Labour)
However, as the motion acknowledges, action must also be taken to address the root causes of migration. Many of those root causes lie deep in global issues that the international community has been trying to address for many years. Civil war, persecution, poverty and climate change all feed into migration, which is why the United Kingdom must be involved in reinvigorated diplomatic efforts to bring peace and stability to countries such as Syria, from which most of the refugees originate. There is also an important role for targeted aid and assisting the development of the countries in question.
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