|
The New Horizons probe showed glaciers on Pluto made of this element that's 4/5 of Earth's atmosphere |
nitrogen
|
$1,200 |
DJ |
SCIENCE NEWS |
2016-12-19 |
#7426 |
|
This element has the symbol N |
Nitrogen
|
$200 |
J |
SIMPLE SCIENCE |
2000-11-21 |
#3732 |
|
All amino acids contain carbon, hydrogen, oxygen & this element |
Nitrogen
|
$600 |
DJ |
GENERAL SCIENCE |
1997-02-27 |
#2884 |
|
Making up about 80% of the air, it has to be "fixed" before you can use it |
nitrogen
|
$1,000 |
DJ |
SCIENCE |
1993-11-09 |
#2112 |
|
Ammonia, widely used as a refrigerant & cleaner, is composed of hydrogen & this element |
nitrogen
|
$400 |
J |
GENERAL SCIENCE |
1992-05-21 |
#1794 |
|
The bacterium rhizobium, which lives in nodules on legume roots, "fixes" this element from air |
nitrogen
|
$800 |
DJ |
SCIENCE |
1992-04-10 |
#1765 |
|
This element is taken from the air by a fixation process to make fertilizer |
nitrogen
|
$800 |
DJ |
GENERAL SCIENCE |
1991-04-24 |
#1543 |
|
When falling, rain picks up extra oxygen, carbon dioxide, & this gas, the largest component of air |
nitrogen
|
$400 |
DJ |
SCIENCE |
1986-01-16 |
#354 |