Explanation The two reproductive strategies for species are as follows: (i) r-reproductive strategy: In r-reproductive strategy, the species reproduce rapidly before attaining maturity at favorable conditions and the species with a capacity for a high rate of population increase is known as r-selected species. These species have short life spans and produce many, usually small offsprings, that receive little or no parental care or protection. The offsprings die at an early age. So, to overcome the loss, the offsprings are produced in large numbers. (ii) K-reproductive strategy: In K-reproductive strategy, the offsprings develop inside the mothers which provides protection to them. The species reproduce later in life, have few offsprings and have long life spans. The offsprings after birth mature slowly and are cared for and protected by one or both the parents. The difference between r-selected species and k-selected species are as follows: No. Characteristics r-selected species K-selected species 1. Life span The species have short life span The species have long life span 2. Number of offsprings produced The species produce many offsprings The species produce less offsprings as compared to r-selected species. 3. Provision of parental care These species do not provide parental care to the offsprings. The species provide parental care and protection to the offsprings after birth. 4...

The two different reproductive strategies for species and the difference between r-selected species and K-selected species with examples and the definition of survivorship curve and the three types of curve; and the reason behind the slow recovery of southern sea otters and the factors threatening this recovery and the reason behind the no exemption of humans from nature’s population control.

Environmental Science (MindTap Course List)

15th Edition

ISBN: 9781305090446

Author: G. Tyler Miller, Scott Spoolman

Publisher: Cengage Learning

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Chapter 5, Problem 9CR

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The two different reproductive strategies for species and the difference between r-selected species and K-selected species with examples and the definition of survivorship curve and the three types of curve; and the reason behind the slow recovery of southern sea otters and the factors threatening this recovery and the reason behind the no exemption of humans from nature’s population control.

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