Two hundred million years ago Earth's continents were all joined in one supercontinent known as ________
A) Pangaea
B) Gondwanaland
C) Laurasia
D) Tsunami
E) Mantle
Answer: A
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A hundred years ago, how did farmers develop new varieties of squash to resist the squash borer insect pest?
A. crossbreeding B. genetic engineering C. natural selection D. artificial insemination
The study of embedding signs and symbols in the landscape that send messages about identity, beliefs, practices and values — and which we can learn to read and interpret, — is an example of
A) semiotics. B) geographic literacy. C) topo-linguistics. D) environmental perception. E) semantics.
Where are deltas common?
a. Low energy shores b. High energy shores c. Leading edges of continents d. At the base of mountains
Amino acids are molecules which contain both an amino group and a carboxyl group. Which atomic species must be present in all amino acids?
A) C and H B) C, H and N C) C, H and O D) C, H, N and O