Broadleaf forest. Broadleaf forests are the dominant habitat of the UK and most of temperate northern Europe. There's little left of Britain's ancient wildwood, but isolated pockets of oak, beech and mixed deciduous and evergreen woodlands are scattered across the continent, and dictate its biodiversity.
Engine pinging also refered to as pinking, detonation or knocking. Pinging can be anything from a loud knocking noise to a soft tinkling sound that is emitted from the engine. If an engine has a tendency to ping, it usually becomes first audible when operated in the lower rpm range and during acceleration.
This is a car engine that has a ping. Also called spark knock, preignition or detonation. If left uncorrected it can ruin the motor. Caused by either a lean fuel condition, carbon deposits in the combustion chamber, over advanced ignition timing, wrong spark plugs, or overheating.