There are approximately 4000 different minerals and each of those minerals has a unique set of physical properties. These include: color, streak, hardness<span>, </span>luster<span>, diaphaneity, specific gravity, </span>cleavage<span>, fracture, </span>magnetism<span>, </span>solubility<span> and many more. These physical properties are useful for identifying minerals.
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Three important resources include energy, mineral, and timber.
Energy (natural gas, crude oil, crude bitumen (oil sands) and coal)
Mineral (gold-silver, nickel-copper, copper-zinc, lead-zinc, iron, molybdenum, uranium, potash and diamonds)
Natural resources are important for supporting the economy, and supporting the necessity of the citizens.
Good luck on your assignment!
Answer:
False
Explanation:
The Rio Grande rift is one of the major continental rifts in the world where the continental crust is being heated and stretched from below
Answer:
D. was rejected at first, but later accepted by the scientific community
Explanation:
when alfred wegener first proposed his theory of continental drift, he was basically a laughing stock in the scientific community. they didn't accept his theory and thought it was crazy and unbelievable. despite this, wegener kept believing in his own theory, but unfortunately it wasn't really until after he died that the scientific community actually accepted his theory of continental drift.
