Ecology and Environment
Character of a stable community is that it
Which of the following statements describe natural extinction? (i) Extinctions abetted by human activities (ii) Slow replacement of existing species (iii) Also known as background extinction (iv) A small population is most likely to be extinct
Natural or background extinction is a slow process of replacement of existing species with the better adapted species due to alternate evolution, changes in environmental conditions, predators, and disease.
Character of a stable community is that it
Which one of the following exhibits least productivity?
Which one of the following is the most productive ecosystem?
An ecosystem which can be easily damaged but can recover after some time if damaging effect stops, will be having.
During the stages of succession in a given ecosystem, the following changes in characteristics may be observed. Characteristic Stages in ecosystem development Stages in ecosystem development Early Late A. Total organic matter Low High B. Species diversity Low High C. Size of organism Small Large D. Productivity Low High E. Food chains Short Long Which one of the characteristics, A, B, C, D or E is responsible for the apparent high degree of stability associated with a climax ecosystem?
Two species competing for the same resource can avoid competition by choosing different habits. This phenomenon is called______ and was supported by _______ .
Why are oceans least productive?
Primary productivity varies from ecosystem to ecosystem. Explain?
Highest annual net primary productivity is of