In which of the following biomes would we expect to find permafrost?

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#Question id: 24159

#Aptitude

There are no effective boundaries when it comes to pollutants. Studies have shown that toxic insecticides that have been banned in many countries are riding the wind from countries where they remain legal. Compounds such as DDT and toxaphene have been found in remote places like the Yukon and other Arctic regions.

This paragraph best supports the statement that

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#Question id: 20541

#12. Applied Biology

Why do bacteria oxidize BTEXs and other organic pollutants?

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#Question id: 393

#1. Molecules and their Interaction Relevant to Biology

Carbon dioxide (CO2) is readily soluble in water, according to the equation CO2 + H2O ↔ H2CO3. Carbonic acid (H2CO3) is a weak acid. If CO2 is bubbled into a beaker containing pure, freshly distilled water, which of the following graphs correctly describes the results?

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#Question id: 5742

#8. Inheritance Biology

When an allotetraploid (AABB) is backcrossed to one of its progenitor species (AA), a sterile progeny is produced.  The genomic composition of this sterile individual can be best represented by

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#Question id: 5026

#11. Evolution and Behavior

Whatever its ultimate cause(s), the Cambrian explosion is a prime example of