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Answer:
1. The cycle of energy is based on the flow of energy through different trophic levels in an ecosystem. ... If large predators are present, they represent still higher trophic level and they feed on carnivores to get energy. Thus, the different plants and animal species are linked to one another through food chains.
Explanation:
2. When organisms use organic matter for cellular respiration, ALL the matter goes back into carbon dioxide, water, and minerals, while ALL the energy leaves the ecosystem as heat (which is ultimately radiated out into space). So matter cycles, energy flows through ecosystems.
3. The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.
Explanation:
phenotypic ratio = 9: 3: 2: 1: 1
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Answer:
Shallow water is the barnacles´ <u>realized</u> niche.
Explanation:
The case of Balanus and Chthalamus is an example of competitive exclusion, which refers to the exclusion of the inferior competitor -<em>Chthalamus</em>- by the superior competitor -<em>Balanus</em>- when there is not habitat differentiation, and both species can not share the same niche. In this case, the dominant species occupies part of the fundamental niche of the inferior competitor -<em>medium to low tides</em>-.
The fundamental niche refers only to physic conditions in which a species can live and survive in the absence of any interaction with other species. In the case of <em>Chthalamus</em>, the fundamental niches are the upper intertidal zones, the middle intertidal zone, and the lower intertidal zone.
The <u>realized niche</u> refers to the restricted conditions in which a species can live and survive as a result of environment physic characteristics and the interaction with other species. <em>Chthalamus </em>´ realized niche is the shallow waters. It can not live in the middle intertidal zone because it competes with <em>Balanus</em> and this last species is the dominant one so it occupies that area. <em>Chthalamus</em> can not live either in deep water because it is predated by other species.
