aa Quick reference
Volcanic **lava rock that is thick and porous and has a rough, jagged surface when it cools. It
abandoned well Quick reference
Any *well that has not been used for a long time and/or is not properly sealed, and is so
abatement Quick reference
The elimination or reduction of emissions that create *pollution. Examples include smoke abatement and noise abatement.
abatement debris Quick reference
Waste materials produced by *remediation activities.
Abbey, Edward (1927–89) Quick reference
who wrote the book *Desert Solitaire and is remembered for his strong criticism of public land policies and his
abiotic Quick reference
Devoid of life, not *biotic, non‐biological. That part of a natural environment that comprises only chemical or physical
ablation Quick reference
1. The process by which *snow or *ice is lost from a *glacier or *ice cap
ablation zone Quick reference
The lower part of a *glacier, where in the course of a year more ice is lost by