Haemoglobin

an iron-containing red pigment, which is found within the red blood cells (called ERYTHROCYTES) of vertebrates and which is responsible for the transport of oxygen around the body. In actively metabolizing tissue such as the muscles, haemoglobin exchanges oxygen for carbon dioxide (CO₂), which is then carried in the blood back to the heart and pumped to the lungs, where the haemoglobin loses the CO₂ and regains oxygen.

Taken from Dictionary of Science

X-Axis

the "horizontal" axis when constructing and plotting a graph.

Taken from Dictionary of Science

The coordinate surfaces of the Cartesian coordinates (x, y, z). The z-axis is vertical and the x-axis is highlighted in green. Thus, the red plane shows the points with x=1, the blue plane shows the points with z=1, and the yellow plane shows the points with y=-1. The three surfaces intersect at the point P (shown as a black sphere) with the Cartesian coordinates (1, -1, 1).

Taken from Wikipedia

Jasper

an impure variety of minutely crystalline quartz (SiO2). It is usually red, brown or yellow, and some varieties are banded, e.g. Egyptian or ribbon jasper.

Taken from Dictionary of Science

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Jasper, a form of chalcedony , is an opaque, impure variety of silica, usually red, yellow, brown or green in color. Blue is rare. This mineral breaks with a smooth surface, and is used for ornamentation or as a gemstone. It can be highly polished and is used for vases, seals, and at one time for snuff boxes. When the colors are in stripes or bands, it is called striped or banded jasper. Jaspilite is a banded iron formation rock that often has distinctive bands of jasper. Jasper is basically chert which owes its red color to iron(III) inclusions. The specific gravity of jasper is typically 2.5 to 2.9.

Taken from Wikipedia