It's the 11th most common element in the Earth's crust in fact.

Hydroxylapatite (Ca5(PO4)3(OH), but is usually written Ca10(PO4)6(OH)2) makes up seventy percent of bone.

The concentration of uranium in soil ranges from 0.7 to 11 parts per million (up to 15 parts per million in farmland soil due to use of phosphate fertilizers), and its concentration in sea water is 3 parts per billion.

Its estimated abundance in the Earth's crust is 1.3 mg kg.

The weight of aluminium in the Earth's crust corresponds to 8.13 of the total weight.

Occurrence Cerium is the most abundant of the rare earth elements, making up about 0.0046 of the Earth's crust by weight.

Occurrence and production Manganese makes up about 1000 ppm (0.1 ) of the Earth's crust, making it the 12th most abundant element there.

Iron is consequently the most abundant element on Earth, but only the fourth most abundant element in the Earth's crust.

It is the ninth most abundant element in Earth's crust (0.63 by mass) and the seventh most abundant metal.

In its various compounds, potassium makes up about 2.6 of the weight of the Earth's crust and is the seventh most abundant element, similar in abundance to sodium at approximately 1.8 of the crust.

Mercury(II) oxide, the main oxide of mercury, arises when the metal is exposed to air for long periods at elevated temperatures.

Occurrence The abundance of antimony in the Earth's crust is estimated at 0.2 to 0.5 parts per million, comparable to thallium at 0.5 parts per million and silver at 0.07 ppm.

It is now known that there are two kinds of crust continental crust and oceanic crust.

Over 90 of the Earth's crust is composed of silicate minerals, making silicon the second most abundant element in the Earth's crust (about 28 by mass) after oxygen.

Mineral ore bodies have also been formed within the crust through a process of ore genesis, resulting from actions of magmatism, erosion and plate tectonics.

Large deposits of fossil fuels are obtained from Earth's crust, consisting of coal, petroleum, and natural gas.

Whereas Earth's crust is in continuous motion, Venus is thought to be unable to sustain such a process.

This magma can be derived from partial melts of pre existing rocks in either a planet's mantle or crust.

And deep beneath those oceans, at cracks in the Earth's crust, you've got heat seeping up from inside the Earth, and you've got a great diversity of elements.

The Mohorovičić discontinuity (), usually referred to as the Moho, is the boundary between the Earth's crust and the mantle.

Soil science covers the outermost layer of the Earth's crust that is subject to soil formation processes (or pedosphere).

The Earth's crust contains 2.6 sodium by weight, making it the sixth most abundant element on Earth.

Although boron is a relatively rare element in the Earth's crust, representing only 0.001 of the crust mass, it can be highly concentrated by the action of water, in which many borates are soluble.

Nine people took the business up on the offer.

The global carbon budget is the balance of the exchanges (incomes and losses) of carbon between the carbon reservoirs or between one specific loop (e.g., atmosphere biosphere) of the carbon cycle.

Apart from meteors within the atmosphere and low orbiting satellites, the main apparent motion of celestial bodies in Earth's sky is to the west at a rate of 15 h 15' min.

As with a continental earthquake the severity of the damage is not often caused by the earthquake at the rift zone, but rather by events which are triggered by the earthquake.

Carbon is the 15th most abundant element in the Earth's crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen.

As much of Hong Kong's terrain is hilly to mountainous with steep slopes, less than 25 of the territory's landmass is developed, and about 40 of the remaining land area is reserved as country parks and nature reserves.

Diatomic oxygen gas constitutes 20.8 of the volume of air.

Eclogite forms at pressures greater than those typical of the crust of the Earth.

The sugars in the dough caramelize in the crust.

The comparative rarity of molybdenum in the Earth's crust is offset by its concentration in a number of water insoluble ores, often combined with sulfur, in the same way as copper, with which it is often found.

The crust is separated from the mantle by the Mohorovičić discontinuity, and the thickness of the crust varies averaging (kilometers) under the oceans and 30 on the continents.

On the map, as in reality, the length of each parallel is proportional to the cosine of the latitude.

The orthographic projection maps each point on the earth to the closest point on the plane.

Due to this recycling, most of the ocean floor is less than old in age.

This involves synthesis of oil within the crust via catalysis by chemically reductive rocks.

Occurrence and production Although thallium is a modestly abundant element in the Earth's crust, with a concentration estimated to be about 0.7 mg kg, mostly in association with potassium based minerals in clays, soils, and granites, thallium is not generally economically recoverable from these sources.

They give us that beautiful brown crust.

The troposphere is the lowest portion of Earth's atmosphere.

It is terrestrial skinning.

Occurrence and production Molybdenum is the 54th most abundant element in the Earth's crust and the 25th most abundant element in its oceans, with an average of 10 parts per billion it is the 42nd most abundant element in the Universe.

Most of the station disintegrated as it fell through Earth's atmosphere.

Altogether, the government owns about 28 of the country's land area.