1. An action that has received a contribution from another Union programme may also receive a contribution under the LIFE Programme, provided that the contributions do not cover the same costs and that the action pursues the environmental or climate objectives set out in Article 3, and does not undermine any of them. The rules of the relevant Union programme shall apply to the corresponding contribution to the action. The cumulative financing shall not exceed the total eligible costs of the action. The support from the different Union programmes may be calculated on a pro-rata basis in accordance with the documents setting out the conditions for support.