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Aquarium with LED lighting Freshwater aquarium lighting is commonly provided by screw-in incandescent bulbs , fluorescent tubes and LED lamps . Incandescent lighting is becoming less popular because it uses much more energy and produces more heat than the other lighting types. [ 1 ]
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The metal used by the Egyptians for woodworking tools was originally copper and eventually, after 2000 BC bronze as iron working was unknown until much later. [2] Commonly used woodworking tools included axes, adzes, chisels, pull saws, and bow drills. Mortise and tenon joints are attested from the earliest Predynastic period.
The Two Oceans Aquarium is an aquarium located at the Victoria & Alfred Waterfront in Cape Town, Western Cape, South Africa. The aquarium was opened on the 13 November 1995 and comprises several exhibition galleries with large viewing windows: [ 3 ] The aquarium is named for its location, where the Indian and Atlantic Ocean meet.
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Ficus plant grown under a white LED grow light. A grow light is an electric light that can help plants grow. Grow lights either attempt to provide a light spectrum similar to that of the sun, or to provide a spectrum that is more tailored to the needs of the plants being cultivated (typically a varying combination of red and blue light, which generally appears pink to purple to the human eye).
Kenyan dairy farmer lighting a biogas lamp. Biogas produced from biomass is a renewable energy source that can be burned for cooking or light. A sugarcane plantation to produce ethanol in Brazil. Biomass is renewable organic material that comes from plants and animals. [92]
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