What characterizes rates of natural population growth in the first stage of demographic transition?
A) often negative
B) relatively low, often fluctuating around zero
C) relatively high, which indicates economic progress
D) extremely high, which reflects improvements in medicine
E) the rates cannot be calculated
B
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The main National Academy of Science conclusion on global warming since the mid-1800s states
A) insufficient data exists to definitively state global warming has occurred.
B) temperatures have remain unchanged.
C) temperatures have risen around 0.5°C.
D) temperatures have risen 6°C.
Cynodonts were mammal-like reptiles and considered to be ancestors of the true mammals
a. True b. False
Why don't diamonds turn back to graphite once they reach Earth's surface?
A) Diamonds are too hard to undergo reactions. B) Temperatures need to be lower than those found on Earth. C) There is not enough heat on the surface of the earth to drive the reverse reactions. D) Humans harvest diamonds before they can turn back to graphite.
An urban legend that states that all it would take is one good, strong earthquake for California to fall off into the sea. Is this true? Explain why this may or may not be the case
What will be an ideal response?