Ducks and geese have small, fluffy feathers called "down." How does down help these birds survive?

  the mississippians were considered to be  horticulturalists, which means they were

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.

Which of these natural resources is non-renewable a.corn b.wind c.geothermal d.natural gas