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: 11642

#Section 1: Ecology

To obtain optimal yield, populations should be harvested at what part of the sigmoid growth curve ?

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#Question id: 10833

#Section 1: Ecology

All the organisms that occur in the redwood community

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#Question id: 10581

#Section 2: Evolution

Life-history characteristics associated with K-selected organisms include

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#Question id: 12412

#Section 1: Ecology

In most mammalian populations the sex ratio

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#Question id: 16865

#General Aptitude

I am worried_____ the exam.