Firefox Word-Break Issues

Hello,
My site is https://www.mendocinocoastpal.org

Text wraps correctly in Safari and Chrome, but in Firefox words break in strange places without even hyphenating (not that I want hyphens).

For example in the Course Description section of our Race Event page the text is broken for “groves” between “grov” and puts “es” on the next line and again four lines down with “and” leaving “a” dangling at the end of the line and “nd” starting the next.

I would greatly appreciate help with this.
Thank you so much,
Jennie