Are peppered moths still black? By 1970, in some polluted regions nearly 99 percent of peppered moths were now black. Still, scientists were puzzled as to how the black moths first came into being. Until now, that is. Researchers in England have traced the difference between a typica and carbonaria moth to a genetic tweak. […]
What are the reasons for melting of a fuse wire?
What is the SI unit of time?
What is the SI unit of time? second. The second, symbol s, is the SI unit of time. It is defined by taking the fixed numerical value of the cesium frequency ΔνCs, the unperturbed ground-state hyperfine transition frequency of the cesium 133 atom, to be 9 192 631 770 when expressed in the unit Hz, […]
What would be the best material to use for the handle of a frying pan?
Why protein is not a genetic material?
Why protein is not a genetic material? For a material to be genetic material, it has to replicate, it must be stable both structurally and chemically stable. Furthermore, it must be able to provide a scope for mutations eventually, key for evolution. Where are proteins made? Ribosomes Are proteins made in cytoplasm? Proteins all begin […]
What is binding energy used for?
What is binding energy used for? Binding energy, amount of energy required to separate a particle from a system of particles or to disperse all the particles of the system. Binding energy is especially applicable to subatomic particles in atomic nuclei, to electrons bound to nuclei in atoms, and to atoms and ions bound together […]
What are 3 basic characteristics of molecular compounds?
What are 3 basic characteristics of molecular compounds? Physical Properties of Molecular Compounds Property Ionic Compounds Molecular Compounds Physical state at room temperature Solid Gas, liquid, or solid Water solubility Usually high Variable Melting and boiling temperatures Generally high Generally low Electrical conductivity Good when molten or in solution Poor Why do molecular compounds have […]
What are three properties of acids?
What are three properties of acids? Acids Aqueous solutions of acids are electrolytes, meaning that they conduct electrical current. Acids have a sour taste. Acids change the color of certain acid-base indicates. Acids react with active metals to yield hydrogen gas. Acids react with bases to produce a salt compound and water. How many types […]
Why is there a difference between the core and the outer core?
What happens if your TYRE pressure is too low?
What happens if your TYRE pressure is too low? When air pressure gets too low, the tire’s sidewalls flex more, and heat builds up within the tire. If the overheating gets severe, a section of the tire’s rubber can separate from its carcass—the mix of fabric and steel that the tire is built on. If […]