Yes, the environmental movement has definitely led to both the creation of new policies and also changes in the existing ones.
Step-by-step explanation:
Being an international movement, the movement for a better ecology has the support of many famous organisations which ensures that the movement can be carried out without ant financial issues.
Many cases have been fought legally to ensure that ecology is preserved and this has led to the passing of various Acts and regulations by both international and national courts. It has also created awareness among the people.
Policies on afforestation, sustainable management, conservation and preservation of nature have been passed and amended as required for a greener planet.