In 1803 John Dalton wrote all elements are composed of small particles he called these
The "wet" type is used for cars, the "dry" type for flashlights
Perfectly dry iron doesn't do this because galvanic action won't take place without water being present
Liquid oxygen normally does this at -183 centigrade
Allotrope of carbon that's used as a solid lubricant
The sea horse has a prominent pair of these which can move independently of each other
Benthic animals are the ones which live in this part of the ocean, the benthos
These animals are the only pinnipeds with tusks
Term for an organism that harbors a parasite
Some birds have patella bones, commonly called this in humans