You directly interact with targeted community or the environment. You connect with another party/organization.
You do not directly interact with targeted community or the environment, however, your actions have a direct positive impact.
You publicly support a cause or a policy and speak on behalf of it to promote an action.
You research a topic and write a report, that is important to influence a policy or a practice. The research is needed by another party/organization.
You come up with a product idea/prototype, that is possibly making a positive impact on society or environment.