Pioneers of the American West used the plant called

horsetails
a. as pot scrubbers.
b. as sandpaper.
c. for decoration.
d. for kindling.
e. for food.


Answer: a

Biology & Microbiology

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A monomer is to a polymer, as glucose is to

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Unlike pinnipeds, sirenians are completely free from the terrestrial environment

Indicate whether the statement is true or false

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Coal is

a. a nonrenewable resource b. a fossil fuel c. rich in stored carbon energy d. organic remains of ancient seedless plants e. all of the above are true

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Imagine that in 2020 you are the top biologist at a research station studying biodiversity in Costa Rica. A young scientist brings you a sample from a previously unexplored site

She asks you to look at the sample and determine whether it indeed contains microscopic, living organisms. As you begin your investigations, you must first decide what characteristics distinguish life from nonlife. How would you differentiate a living organism from nonliving matter (including viruses and prions)?

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