Define biotic potential and environmental resistance, and give factors of each. Which generally remains constant, and which controls a population's size?
What will be an ideal response?
Biotic potential is "the number of offspring (live births, eggs laid, or seeds or spores set in plants) that a species may produce under ideal conditions." A species' biotic potential remains constant. Environmental resistance is "the combination of all the abiotic and biotic factors that may limit a population's increase." Environmental resistance may increase or decrease depending upon population size." Environmental resistance controls a population's size.
The biotic potential of a species causes the population size to increase. While the population size is relatively small, the environmental resistance is low and the rate of population growth increases. As population size increases, the environmental resistance increases and the rate of population growth declines. The population size of some species remains relatively level with moderate increases and decreases in population size. Other species have more dramatic fluctuations in population size.
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What will be an ideal response?
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