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The young male catkins of a grey alder tree in October
Catalytic converter replacement
Close-up of closed black alder (Alnus glutinosa) flowers hanging from a tree in autumn. The background is green.
Alder (Alnus glutinosa) is one of the commonest trees found in wetlands. It provides food for good numbers of finches during most winters. Here, it is spring, and fresh green leaves accompany the female catkins / cones (strobili). Strobili are cones, one cone is a strobilus.
Asbestos insulation on crosbeeam above celing tile in South Florida building.
A new muffler hangs under a car at an auto repair garage.200902405005
abstract rusty iron pole background
View of a green acorn.
The mature female cone sof an Italian alder (alnus cordata) tree in August
Distinctive leaves of American witch-hazel (Hamamelis virginiana), a deciduous shrub or small tree of eastern North America, in dappled light at a forest edge in Connecticut's Litchfield Hills, late May. Typically grows no higher than 15 feet, according to the U.S. Forest Service. Frequently cultivated.
A diesel particulate filter in the exhaust system in a car on a lift in a car workshop, seen from below.
Grey alder (Alnus incana subsp. incana) with cones. Macugnaga. Verbano-cusio-ossola. Piedmont. Italy.
Selective focus on Oxygen Sensor mounted directly to a Catalytic Converter on the underside of a automobile. Catalytic Converters contain precious metals and are a target for theft.
Abstract pattern on water
Complete car exhaust isolated on white background.
chinese medicine bolbostemma paniculatum on black background
Foliage showing signs of attack by alder sawfly (Eriocampa ovata)
Surfboard Shaper in his shop
Walnut flowers are in the botanical garden, North China
Popcorn comes out of a car's exhaust
various parts of Betula utilis or Himalayan birch is long been used in local traditional medicine.
new exhaust system with catalytic converter
Stunning autumn foliage adorned with acorns, beautifully capturing the true essence of fall and natures beauty
Engine parts, Machine Valve, Engine Block, Cylinder, Chrome material, Machine Parts. Valve in a deposit on the removed cover of the engine valve box.
Silver birch, weeping birch. Betula pendula. Close up macro image of leaves and male and female flowers
Seoul Korea
Big car catalytic converter, views from above, isolated on a white background with a clipping path.
close-up beech leaf
Allergen Silver Weeping Birch Tree Betula Pendula Flowers Catkins Seeds
Monstera plant stem textures close up macro
Free Images: "bestof:Diels-alder catalytic.png en diels-alder catalytic 2013-10-23 19 07 07 own Mfomich cc-zero Uploaded with UploadWizard Diels-Alder reaction"
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