What is the greatest threat to plant diversity? 

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#Question id: 9571

#XL - T Zoology

All homeostatic systems used by organisms to regulate body temperature are described by which of the following?

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#Question id: 9572

#XL - T Zoology

The gills of fish maintain effective oxygen uptake from water and the legs of seagulls reduce the loss of heat to the external environment by the same circulatory mechanism known as __________.

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#Question id: 9573

#XL - T Zoology

The energy of incident solar radiation reaching the surface of the earth declines toward the poles from its maximum in equatorial regions. One cause of this phenomenon is greater absorption of solar energy by the earth's atmosphere at high latitudes. Why is this?

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#Question id: 9574

#XL - T Zoology

What is the prevailing wind direction in equatorial regions affected by the trade winds?

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#Question id: 9575

#XL - T Zoology

The warm counter current known as El niño moves southward along the coast of peru each year around christmastime. When this counter current flows strongly, it displaces the cold peru current offshore and results in:

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#Question id: 9576

#XL - T Zoology

How rapidly does adiabatic cooling reduce air temperature at higher altitudes?