Invertebrates are a group of organisms that have backbones

a. True
b. False

False

Environmental & Atmospheric Sciences

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The oceanic crust has an average age of ________ and a maximum age of ________

A) 200 million; 400 million B) 80 million; 200 million C) 100 million; 180 million D) 90 million; 300 million

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Environmental & Atmospheric Sciences

Which of the following minerals is most stable at the earth's surface?

a. hornblende b. quartz c. plagioclase d. olivine

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Environmental & Atmospheric Sciences

Which of the following is true about zwitterions?

A) They are positively charged. B) They are negatively charged. C) They are electrically neutral. D) The charge depends on the zwitterion.

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Environmental & Atmospheric Sciences

A scale of 1 inch = 8 miles is an example of a

A) representative fraction. B) written scale. C) relative scale. D) graphic scale.

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Environmental & Atmospheric Sciences