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Representatives of the Lemnaceae, the duckweed family, are well-adapted for use as bioindicators for testing soil and water for toxic substances.  Their rapid multiplication and the simplicity of their anatomy are important advantages for this use.
Amazing Colorful Agate Crystal stone cross texture background.
Pegmatite rock close up with many crystals.
Heliamphora pulchella is endemic to some of the table-top mountains in the Guiana highlands. The inside of the pitchers is covered with white hairs.
Large piece of polished Baltic Sea amber with the insects inside on the black background
a spring scene with cherry blossoms in bloom
Agate crystal cross section background. Natural translucent agate crystal surface slice. Macro close-up of ore, abstract structure
malachite mineral specimen stone rock geology gem crystal
Natural agate surfaces, suitable for backgrounds and wallpapers.
Algae, a unicellular organism, diatoms
Tiger’s eye mineral stone sample macro photography
Muscovite gneiss with large flat single crystals, made of light mica, hand specimen from Germany, Bavaria, Upper Palatinate, stacked photo.
Efflorescence at Great Salt Lake. Halite (salt) threads, possibly hollow, form by capillary action and evaporation through a gypsum (selenite) crust. As the threads grow, they form halite blisters covering the gypsum as seen at left. Bonneville Salt Flats parking lot, Great Salt Lake, Utah, USA.
Carnivorous plants  Pinguícula in the greenhouse pinguicula among plants
Chiton, Tripoplax regularis. on a rock at Salt Point State Park in Sonoma County, California.
cross section of blue agate isolated on black background
Studio shotting of Crystal, suitable for design element.
Heliamphora pulchella is endemic to some of the table-top mountains in the Guiana highlands. The inside of the pitchers is covered with white hairs and filled with liquid.
Silica Quartz mineralisation around purple fluorite cubic crystals in a mineral rock sample
close up of native gold from Zlate Hory, Czech Republic
Photomicrograph of Volvox globator, a green algae in various stages of development. Dark green spots are daughter colonies forming inside of parent colony. Live specimen. Wet mount, 10X objective, transmitted brightfield illumination.
Mesembs (Lithops gracilidelineata) South African plant from Namibia in the botanical collection of supersucculent plants
Micro world
Heliamphora uncinata was described only recently. Its prominent feature is a hooked lid.
Colorful Crystal texture, design element for use.
Porcelain or Mosaic Orchid, chloraea magellanica, Carretera Austral, Patagonia Chile
Mineral Fusinus sp. Pliozän
Heliamphora pulchella is an endemic carnivorous pitcher plant on Amuri Tepui in Venezuela.
Magnified close up of porphyritic granite with fledspar.
Free Images: "bestof:Stylidium species, foliis - WA.jpg Detail of base of Stylidium most likely Stylidium hispidum on gravel and dolerite in Jarrah Forest at a locale cleared by a"
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