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

Environmental & Atmospheric Sciences

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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

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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.

Environmental & Atmospheric Sciences

Where are deltas common?

a. Low energy shores b. High energy shores c. Leading edges of continents d. At the base of mountains

Environmental & Atmospheric Sciences

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

Environmental & Atmospheric Sciences