The platforming work well and the sprites are nice !
When losing or finishing the game, it's a bit harsh that you only have the option to quit. A start over would be nice.
A few gameplay ideas that poped when playing : walking in polluted making you spread pollution/unable to catch insects (you have to clean yourself in fresh water). A way to clean pollution, making the platforming more difficult (heavier with a garbage bag in your pockets for exemple) but rewarding you with new insects/plants.