One species mates at the season when daylight is increasing from 13 hours to 13 hours, 15 minutes; another species mates at the season when daylight is increasing from 14 hours to 14 hours, 15 minutes. The isolating mechanism is

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#Question id: 12143

#Section 1: Ecology

The __________ states that two species cannot coexist indefinitely when the same resource limits both species. 

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#Question id: 12144

#Section 1: Ecology

Which statement regarding population growth rates is incorrect? 

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#Question id: 12145

#Section 1: Ecology

If population size is exactly half of carrying capacity: 

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#Question id: 12146

#Section 1: Ecology

Which of the following is not a density-dependent factor? 

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#Question id: 12147

#Section 1: Ecology

Climax forests

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#Question id: 12148

#Section 1: Ecology

If asked to find the cause of regular fluctuations in a population's size not associated with seasonal environmental variation, you would probably first seek evidence for: