Although signing petitions may seem like a small action, when they gain a lot of support, they can be quite effective, and are an easy and free way to stand with climate activists. They can bring a topic to the attention of media outlets where it can be spread. They can show a public official that their climate actions will either be supported or face backlash. They can spur additional action and raise money for the cause, and lastly, they can build a list of people who are interested in the issue who can be looked to for future support. However, you always want to be careful that you are supporting petitions and groups that have your same interests at heart and do not have a hidden agenda.