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Cost Benefit Crossword

Horizontales
A combustible fuel made from recently living organisms
Something sent forth or released
Releasing energetic particles
Energy from flowing charged particles
Heat from inside the Earth
Seperate into more basic parts; to rot
Chemical made from petroleum
Thorough study of something complex
Study of costs and benefits from an action
The Earth system that includes all living things
Using flued to fracture rock to obtain petroleum
A geothermal spring erupts water and steam
A sudden outburst
Verticales
Energy from moving water
Smallest particle of an element
Something fortified to make it more useful
Negatively charged atomic particle
Energy from splitting atoms
General agreement
Permanently frozen layer of Earth
Using resources in a way that does not permanently use them up
Something that produces a helpful outcome
Something that cannot be restored quickly
Fuel formed from remains of living organisms
Someone recognized as an expert
A comination of two types; a vehicle that uses two different sources of fuel
Something that can be restored quickly