Vocabulary for the environment and the Present Perfect with a writing prompt. I would suggest first showing a video clip of contamination and pollution as an introduction to the subject prior to teaching the vocabulary.
Please feel free to view bundles for:
Spanish 1: https://www.teacherspayteachers.com/Product/Materials-for-Spanish-1-Bundle-1643962
Spanish 2 Bundle https://www.teacherspayteachers.com/Product/Spanish-2-Bundle-1644009
Spanish 3 Bundle: https://www.teacherspayteachers.com/Product/Spanish-3-Bundle-2871612
You might also be interested in the "Medio Ambiente" bundle: