Core 4

Four of the testing stations make up the bulk of the competition and remain constant each year: Aquatic ecology, Forest ecology, Soils and Land Use, and Wildlife ecology. We refer to these subjects as the “core four.”

Students can begin to learn about the core four subjects at any time. We especially encourage students and their teachers to seek out technical professionals who specialize in these subjects and can help train students. Contact us if you need assistance connecting with a technical professional near you. 

Aquatic Ecology

Oregon Envirothon Aquatic Ecology Test Keys:

201820172016201520142013

Forest Ecology

Oregon Envirothon Forest Ecology Test Keys:

201820172016201520142013

Soils and Land Use

Oregon Envirothon Soils and Land Use Test Keys:

201820172016201520142013

Wildlife Ecology

Oregon Envirothon Wildlife Ecology Test Keys:

201820172016201520142013