Earth Science
This climate occupies about one-third of the global land surface and is described as a dry climate that receives little rainfall and is typically known for having vast amounts of sand.
Desert
This element is found in heme, and gives hemoglobin its affinity for oxygen. It has the atomic number 26 and the atomic symbol Fe.
To collect these creatures, old animals would be walked through wetlands so these bloodsucking parasites could bite them and suck their blood.
Leeches
This molecule stores information in the genetic code.
DNA
This physicist fixed the speed of light as a constant in all reference frames in his formulation of special relativity.
Einstein
The "crown of thorns" member of this class poses a threat to coral reef systems.
Starfish
Rutherford discovered the nucleus while firing alpha particles at a foil of this element.
Gold
Earthquakes in Nepal can cause these events on Mount Everest.
Avalanches
This structure gives the rough endoplasmic reticulum its namesake characteristic.
Ribosomes
In 1929, this scientist noticed galaxies appear to expand away from us in every direction, and that redshift increases as a function of distance.
Hubble
Nutrients in these bodies of water are provided by cold seeps, hydrothermal vents, marine snow, or whale falls.
Ocean/Sea
Amalgams are alloys containing this metal, whose height fluctuations inside a tube were used to measure air pressure in the first barometer.
Mercury, Hg
These substances can be modeled as hard spheres, while in another formulation, they are assumed to have no mass and completely elastic collisions.
Gases
According to legend, Percy Spencer invented this device after realizing the magnetron had melted a candy bar in his pocket and was able to later use it to pop popcorn.
Microwave
Alfred Russel Wallace independently developed a theory that made this scientist famous.
Darwin
Events in this period are the subject of Stephen Jay Gould's theory of contingency, and many important fossils from this period were discovered at the Burgess Shale by Charles Walcott.
Cambrian period
When cooled to the lambda point, this element forms a superfluid Rollin film that appears to creep out of its container.
Helium
Members of the Variolagenus were the origin of this disease, which British soldiers once used as a weapon concealed in blankets.
Smallpox
The second part of this process begins with a carbon dioxide molecule combining with RuBP to make a high-energy intermediate.
Photosynthesis
A characteristic named for this mathematician is determined by the number of vertices minus the number of edges plus the number of faces.
Leonhard Euler
Carl Hilt theorized that at lower depths, the quality of this material goes up.
The nitrate of this element was used to develop early photographs.
Silver
A historical one of these events at the lapilli-layered excavation site Regio V was where a skeleton was found crushed under a giant rock.
Eruption
Repeatedly undergoing this process results in the shortening of telomeres.
Mitosis
A scientist with this surname names a temperature above which ferromanetism disappears.
Curie