I'm gonna try the Context Clues strategy today. So, I was reading an article about sustainable living, and I came across the word "ecosystem". I didn't know it exactly, but the sentence said something like, "The forest is a delicate ecosystem where plants and animals depend on each other." From that, I guessed it means like a community of living things and their environment, and it worked.
I also looked it up later, and yeah, it's like a system where living things interact with their surroundings. New words I learned? Hmm, "ecosystem" itself, and also "sustainable" (which means able to be maintained at a certain level without harming the environment).