I have a degree in biology under my belt, as I do a Chemistry degree. my career has been all about Chemistry, and now work in the Oil&Gas industry, been a pretty good ride. What has helped me, especially with lab work, is my Aspie focus on a topic, it works well Bit harder these days as my job is more about the bigger picture and people, but so far so good.
Went Chemistry as its a surer bet as a career than Biology, at least in australia. You might want to consider incorporating Environmental management/engineering or similar as the demand for these expertise is growing by companies who are getting greater demands on the environmental management side of things. Do a search on any job website and theres rafts of these. Pure biology may not be the best way forward IMO.
I LOVED Biology, my degree was a lot of fun and so easy because of my interest, but I went practical. I do have moments where I wonder if it was the better way forward for me, but I can't regret my decisions.
If you love Biology, then go for it!