The right answer is the first phase of the general adaption syndrome.
The concept of stress was introduced by Hans Selye. He describes the mechanism of the adaptation syndrome, that is to say all the modifications that allow an organism to bear the consequences of a natural or operative trauma.
In fact, it is the double-perception of a state of divergence between a demand for adaptation at a given moment and the ability to cope with it. It is an energy expenditure. It can be positive or negative.
The stress syndrome evolves in three successive stages:
*"Alarm reaction": the defense forces are mobilized
*"Resistance stage": adaptation to the stressor
*"Stage of exhaustion": inexorably reached if the stressor is sufficiently powerful and acts a long time.
immunity<span> involves your bodies direct response to an unknown pathogen. This response is the production of antibodies specific to the antigen of a particular pathogen. ... Conversely, </span>passive immunity<span>is an </span>immune<span> response which involves antibodies obtained from outside the body</span>
Answer:
B. Many members of a key species, and the ecosystem will no longer be stable.
Explanation:
An ecosystem that contains a high degree of biodiversity will have numerous organisms of different species. According to the question, sharks are stated to feed on a wide variety of prey. This means that sharks can feed on any other species of organisms at lower trophic levels.
In a situation whereby an ecosystem contains a low degree of biodiversity i.e. low variety of species, the sharks will have to consume a large numbers of a key species, which will cause the ecosystem to lose stability.
Nucleic acids
Nucleic acids store and transfer cellular information and transfer energy in all living organisms.
The intermediate disturbance hypothesis predicts that communities with intermediate levels of disturbance will have the most diversity. If disturbances become too rare, competitive dominants will eliminate other species, reducing diversity as equilibrium conditions develop.
The intermediate disturbance hypothesis predicts that the highest levels of diversity will occur at moderate disturbance levels. We investigated the species diversity, abundance, and species diversity of bacteria on the human body in relation to washing disturbance. According to IDH theory, diversity is maximized at intermediate levels of disturbance because species that thrive at both early and late successional stages can coexist. The intermediate disturbance hypothesis (IDH) proposes that when ecological disturbance is neither too rare nor too frequent, local species diversity is maximized.
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