Large predators are found at higher trophic levels because specialized bodies are needed to extract the small energy that gets to them.
The energy that gets to successive trophic levels decreases progressively because much of it is lost as heat. This means that a small percentage of the energy from the producers that form the bases of trophic levels to the predators that are somewhat at the top of trophic levels.
With big body size, the bodies of predators are organized into systems that work together to efficiently extract the small energy that gets to them from immediate lower trophic level.
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Optimization refers to the activity of making the most or best efficient use of a resource of situation. Optimization suggests that it is probable to sustain performance in some areas via spontaneous practice and the application of new technology.
The older adults get involved in numerous sexual activities, companionship is essential to age individuals. The optimization in older adults’ sexual activity can be expressed by getting involved in more kissing, cuddling, and fantasizing in comparison to intercourse for satisfying the sexual activity.
The answer is; D
It reduces the diversity of the population because some variations in the population can be completely eliminated by the bottleneck effect. Even if the population recovers in population size, the genetic variation will have reduced as compared to the initial population before the bottleneck. For a mall population, this effect can be grave because the reduced genetic variation may mean that the population may be unable to adapt to new selection pressures hence may go extinct.