How are water properties important to life? Water’s extensive capability to dissolve a variety of molecules has earned it the designation of “universal solvent,” and it is this ability that makes water such an invaluable life-sustaining force. On a biological level, water’s role as a solvent helps cells transport and use substances like oxygen or […]
How high can an airplane fly?
How high can an airplane fly? 31,000 to 42,000 feet How do planes avoid birds? Birds can detect airplane landing lights and weather radar and avoid the airplane. Airplane colors and jet engine spinner markings help to repel birds. Birds seek to avoid airplanes because of aerodynamic and engine noise. Do planes kill birds? Planes […]
Is obesity a disease or a choice?
Is obesity a disease or a choice? Obesity is a chronic disease. According to the Centers for Disease Control and Prevention, obesity affects 42.8% of middle-age adults. Obesity is closely related to several other chronic diseases, including heart disease, hypertension, type 2 diabetes, sleep apnea, certain cancers, joint diseases, and more. What is obesity What […]
Which process does not produce carbon dioxide?
Which process does not produce carbon dioxide? Photosynthesis What produces the most CO2 on Earth? Main sources of carbon dioxide emissions 87 percent of all human-produced carbon dioxide emissions come from the burning of fossil fuels like coal, natural gas and oil. The largest human source of carbon dioxide emissions is from the combustion of […]
Why are finches in the Galapagos Island A good example of speciation?
Why are finches in the Galapagos Island A good example of speciation? All the finches in the different islands share a common ancestor, which is a group of finches that initially migrated into the islands and conquered the different islands. Due to the different ecologies in the different islands, adaptive radiation of the finches occurred […]
Does it take energy to freeze water?
Can you run 2 stroke gas in a 4 stroke?
Are ecoregions bigger than ecosystems?
Are ecoregions bigger than ecosystems? An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. What is an example of an ecoregion? Ecoregions are defined by soil type, climate, temperature, precipitation and other characteristics. For […]
Does convex lens converge light rays?
Does convex lens converge light rays? Because a convex lens concentrates the light rays that are incident on it, it is called a converging lens. The bending of rays is maximal at the top and bottom of the lens. The distance from the optical center to the focal point is called the focal length of […]
What are circuits in physics?
What are circuits in physics? A circuit is a closed loop that electrons can travel in. A source of electricity, such as a battery, provides electrical energy in the circuit. The appliance may, for example, provide light or heat or mechanical energy. What is short circuit in physics? A short circuit (sometimes abbreviated to short […]