Aquatic ecosystems that are most readily damaged by acid are those that lack an important buffer that dissolves into the runoff after a precipitation event. What is this buffer?

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#Question id: 20540

#Unit 12. Applied Biology

Toluene, ethylbenzene and xylene must be kept to ________levels in drinking and recreational waters due to their toxicity

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#Question id: 7306

#Unit 5. Developmental Biology

A plant scientist was hired by a greenhouse operator to devise a way to force iris plants to bloom in the short days of winter. Iris normally blooms as a long-day (short-night) plant. Which of the following has the best chance of creating iris blooms in winter?

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#Question id: 2285

#Unit 2. Cellular Organization

Assuming all other factors to be the same, electron microscopes have greater resolving power than light microscopes because.

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#Question id: 24181

#General Aptitude

French explorers probably taught the Inuit Eskimos how to play dominoes.

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#Question id: 15543

#Unit 8. Inheritance Biology

In Benzer's intragenic mapping experiments, what event was required to allow production of infectious phage from rII mutants?