Argentite is an ore of this metal
In general terms, as opposed to carnivore, it's defined as an animal that eats mostly plants
Solar flares are associated with these dark areas that peak about every 11 years
The ants seen here of the genus Atta are known by this "occupational" name
12 to 30 miles up, this atmospheric "layer" largely in the stratosphere protects us from the full force of ultraviolet rays
It can be a voracious reader, or a beetle larva that feeds on paper
When a tropical storm's winds increase past 74 MPH, it's classified as one of these
75 miles long & 64 miles wide, the Mauna Loa volcano in this state is the world's largest active volcano
[Here comes Bill Nye, The Science Guy] The north pole on a bar magnet will attract this pole on another bar magnet
Friction, as when a brake pad slows a wheel, converts kinetic energy into this