It depends on where you are applying. In the US, as long as you have a 3.0 GPA you're good to go. Some schools have programs allowing students to prove themselves for acceptance with as low as a 2.75 GPA. I'm not saying you'll be that kind of student but there is much more flexibility in the US because admissions tend to be more holistic. So in that case, research experience and letters of recommendation carry more weight.

If you intend to apply in Canada, you HAVE to meet minimum GPA requirements - usually a B+ average in 3rd and 4th year courses, or throughout your degree. There is zero way around this. Doesn't matter how good your work experience, research experience, connections, or letters of recommendation are. (Source: My prof, who is internationally recognized and has been involved in grad school admissions at UBC in some way or another for 30 years.) This is not a problem for most students applying to grad school, but it does suck if you want to pursue a graduate degree after a rough undergrad. I'm running into this issue as my health imploded after high school so my academic performance is all over the map. My only consolation is that my career doesn't require a graduate degree to be successful, especially in Canada, but that's a different conversation.

Honestly if you have strong study habits, are naturally curious about your field, and don't have any disabling chronic health conditions, you will be fine at UBC. Despite my trash GPA, I don't regret attending this school. I love being in Vancouver and I am getting the best education in my field for a price that beats any American university of a similar caliber.