What are two reasons that digital storage of data is so reliable? A. memory chips do not break easily B. copied data decrease in quality each time a copy is made C. digital data are easy to change D. digital data can usually be recovered even if the storage device stops working

The substances that are necessary for producing of certain hormones and that store and transport vitamins

Which of the following is a measure of the amount of light a star directly emits?               a.  luminosity    b.  intensity    c.  wavelength    d.  brightness

When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(ii) sulfate is reduced to lead at the cathode and oxidized to solid lead(ii) oxide at the anode. suppose a current of is fed into a car battery for seconds. calculate the mass of lead deposited on the cathode of the battery.