Magma consists of oxides of silicon, aluminum, magnesium, iron, calcium, sodium and potassium. Why is this so?
A) They are all heavy elements located beneath the surface of the earth.
B) They are all attracted to heat.
C) They all have low melting points.
D) They are all oxides.
Question 2
Igneous rocks are overwhelmingly composed of silicate minerals. Why is this so?
A) Silicates are very heavy.
B) Silicates compose a huge amount of the earth's crust.
C) Silicates are only found in igneous rocks.
D) Silicates are very rare.
Two representations of heme (derived from PDB ID 1CCR). The iron atom
Calcium Antagonist
DNA consists of two complementary strands wound around each other to form
(a) The relative age ranges of different dating techniques depend upon the half-life of the system u
Eating calcium-rich foods daily assists with bone health, muscle contraction, and blood clotting
What is the concentration, in mg/ml, of a solution containing 2mEq/ml of potassium chloride?