The keyboard can type letters, numbers and punctuation, and also lets you control the computer, using special keys like the START button, and the arrow keys. A Dvorak keyboard is an alternative layout. A keyboard is most commonly attached to a computer via USB port.
3.0 Effects of temperature on aquatic biota. Temperature has long been recognized as an important environmental factor in both terrestrial and aquatic ecosystems in regard to its pivotal role over biological activity (development, growth and reproduction).emperature reductions to stream environments in winter may result from the loss of insulation of the forest canopy under clear-cut conditions in combination with increased radiant cooling; accelerated freezing may lead to anchor ice formation and minimize interstitial habitat for juvenile fish (Hicks et al.
For typical freshwater fish, the temp in my aquariums is between 70 and 78 F. There are others that require higher or lower temps, for instance blind cave fish can take 63-75 F, and Bettas as high as 70-85 F. Saltwater aquarium fish typically come from the tropics, so 75-80 F is best.ach species will have an ideal range of temperatures. You should research every specie you keep and do it before purchasing. If your water change schedule keeps the nutrient levels low enough that you can avoid heavy algae growth,the photoperiod in the tropics is always 12 hours of light and 12 hours of darkness.