in general, an ecosystem can remain relatively constant over a long time under stable conditions. However, a change brought by a physical, chemical, or biological agent that impacts population size or community structure is considered as which of the following?
1.Ecosystem succession.
2.Ecosystem stability.
3.Ecosystem biodiversity
4.Ecosystem disturbance.
Answers
Answer:
1.Ecological succession is the process of change in the species structure of an ecological community over time. The time scale can be decades, or even millions of years after a mass extinction.
2.An ecosystem is said to possess ecological stability if it is capable of returning to its equilibrium state after a perturbation or does not experience unexpected large changes in its characteristics across time.
3.Ecosystem biodiversity refers to the number of ecosystems in a certain area. Ecosystems are all of the animals, plants, bacteria, and fungi as well as the physical components of the area.
4.In ecology, a disturbance is a temporary change in environmental conditions that causes a pronounced change in an ecosystem. Disturbances often act quickly and with great effect, to alter the physical structure or arrangement of biotic and abiotic elements.
Answer:
Every one of us is sustained by various kinds of natural resources – such as food, materials, and energy that are harvested or otherwise extracted from the environment. Our need for those resources is absolute – we cannot survive without them. Moreover, the same is true of all other species – every organism is a component of an ecosystem that provides the means of subsistence.