What does Charlie Tango Foxtrot mean? In the NATO phonetic alphabet, Charlie is used for the letter C and Foxtrot, the letter F. That makes the compound clusterfuck a Charlie Foxtrot. Charlie Foxtrot begins as a euphemism in 196os US military slang for a poorly-managed operation during the Vietnam War. What is Oscar Tango Mike? […]

What process creates rift valleys? seafloor spreading How was the East African Rift Valley formed? The East African Rift Valley, as the region is known, formed where the Somalian and Nubian plates are pulling away from the Arabian Plate. The eastern branch of the rift passes through Ethiopia and Kenya, and the western branch forms […]

Is hemoglobin A respiratory pigment? Hemoglobin carries oxygen to the cells. This respiratory pigment of the blood transports oxygen and carbonic anhydride, regulates pH balance, gives rise to bilirubin, and gives the blood its red color. What is the respiratory pigment for crustaceans and what color is it? Hemocyanins are copper-containing respiratory pigments found in […]

What is a control system Explain with examples? A control system is a system, which provides the desired response by controlling the output. Traffic lights control system is an example of control system. Here, a sequence of input signal is applied to this control system and the output is one of the three lights that […]

What kind of care is provided in assisted living? The most common assisted living services offered include medication management and assistance with using the bathroom, dressing and grooming. Housekeeping, meals, laundry and transportation services, as well as social programs and activities, are typically included. What is the philosophy of care in assisted living? (a) The […]

What moves needed substances through the plasma membrane? Diffusion through a permeable membrane moves a substance from an area of high concentration (extracellular fluid, in this case) down its concentration gradient (into the cytoplasm). The passive forms of transport, diffusion and osmosis, move materials of small molecular weight across membranes. What moves needed substances or […]

What is an explanation in science that has a lot of evidence to back it up? In other words, according to the Merriam-Webster Dictionary, a hypothesis is an idea that hasn’t been proven yet. If enough evidence accumulates to support a hypothesis, it moves to the next step — known as a theory — in […]

What factor keeps the size of a cell small? Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. When this happens, the cell must divide into smaller cells with favorable surface area/volume ratios, or cease to function. […]

Why is it important that the medium be fresh? 4) The medium should be fresh so that there is less time for oxygen to diffuse throughout the broth. Old media would negatively affect the growth of anaerobic organisms (and possibly microaerophilic) because of the increased presence of oxygen. Growth of aerobes and facultative anaerobes would […]

What is an earthquake and what causes an earthquake? Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. They don’t just […]