What life experiences influenced my concern for the environment?
I was lucky to have a class in Summer School from Mr. Lathrop back in the late 1970s on backpacking with a trip at the end so I loved nature early, in awe. I was finishing up a Master's of Science in Stockton and on a break went to work for McCormick and Baxter Creosoting Company as a quality control chemist and learned about industrial pollution. After turning myself in to the authorities for having once participated I became a registered environmental health specialist in California and worked for many years regulating the clean up of contaminated sites.
Biomass combustion involves cutting down trees that store carbon dioxide from the atmosphere using PHOTOSYNTHESIS POWER, pelletizing which is polluting, and then export which is polluting before combustion.
Plastics come from fossil fuels that trapped carbon from the atmosphere millions of years ago. We extract fossil fuels - your teacher says "Keep it in the ground". Consider ways that you could reduce plastic use.