Our choices affect the sustainability of the Earth's resources. Grade 3 PYP Sharing the Planet 26 Vocabulary words each with a picture, definition and an example sentence. Vocabulary words include: consume, consumer, consumption, conserve, sustainable, environment, pollution, biodegradable, resource, source, energy, renewable energy, non-renewable energy, reduce, reuse, recycle, reject, rethink, refuse, responsibility, minimalism, advantage, disadvantage, affect, effect, and impact.