Which of the following statements about race is false?
a.
race is based on physical characteristics.
b.
race is socially constructed.
c.
race has a biological basis.
d.
race is often used to compare people.

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Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals

Why is the huronian supergroup rock formation particularly interesting to scientists? because it looks like a cross-section of a giant, stone encyclopedia because it formed during the period when oxygen began to accumulate in the atmosphere because it contains unusually large amounts of oxygen and sulfur because it dramatically altered the planet's development when it first formed