Match vocabulary to it's definition
1. peat
ravine
2. mulch
increased aridity
3. gorge
disconnected part of a country
4. fallout
radioactive waste
5. exclave
decomposed organic material
6. eutrophication
prevents evaporation or erosion
7. desertification
doesn't increase co2 in the atmosphere
8. carbon neutral
nutrient enrichment of a water body

Explanation:

Peat - decomposed organic matter

Mulch - prevents evaporation and erosion

Gorge - ravine

Fallout - radioactive waste

Exclave - disconnected part of a country

Eutrophication - nutrient enrichment of a water body

Desertification - increased aridity

Carbon neutral - doesn't increase carbon dioxide in the atmosphere.  

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.