What forms does civic participation come in? 

Being into politics. For example, being the president, govener, mayor, or a representative. Although, the majority of people arent those types of things, instead you can vote. This is because you voice your opinion when you vote because you are sharing your opinion on who you think should lead a nation/territory based on your beliefs. In addition to that, there is protesting which can help to voice many peoples opinions at once because you typically protest in groups.

Why does civic engagement matter?

It matters because it is a way to let our voice be heard so we feel that we are in an envirment where our voice is heard and honored/matters.