explain nature and man-made cause of imbalance in nature
Answers
Answer:
maybe I am correct
Explanation:
The balance of nature (also known as ecological balance) is a theory that proposes that ecological systems are usually in a stable equilibrium or homeostasis, which is to say that a small change (the size of a particular population, for example) will be corrected by some negative feedback that will bring the parameter back to its original "point of balance" with the rest of the system. The balance is sometimes depicted as easily disturbed and delicate, while other times it is inversely portrayed as powerful enough to correct any imbalances by itself.[1] The concept has been described as "normative", as well as teleological, as it makes a claim about how nature should be: nature is balanced because "it is supposed to be balanced".[2]
Answer:
Explanation:
Human impact on the natural environment has reached unprecedented levels. Humans are present on all continents; almost all ecosystems have been modified by human activities through habitat loss and fragmentation, overexploitation, pollution, and invasive species. More than 35% of the land area is used for agriculture and built-up areas, 40% of the terrestrial productivity is appropriated by humans, 50% of all coral reefs are lost or degraded, 70% of recognized marine fisheries are fully exploited, overexploited or depleted; humans use more than 50% of the available runoff of fresh water. In addition, human emissions of greenhouse gases and other pollutants have been associated with global climatic changes. The scale of the human impact on the planet now has global consequences; thus, many scientists argue that the world has entered a new era designated the Anthropocene.
This book summarizes ecological responses to global environmental change; it is relevant to interested readers of different backgrounds trying to understand why scientists are worried about current environmental change. Evidence shows that in geological times species have appeared and disappeared as the climate and ecosystems changed. Ecosystems are dynamic and adapted to those changes, however, as clearly demonstrated in Chapter 13, past climatic changes have occurred over large temporal scales, while human-induced impacts are occurring at a much faster rate. The question then is: will populations, communities, and ecosystems be able to respond to these fast changes in the environment or will the earth lose a large part of its biological diversity? This is discussed in detail in Part V, which is particularly interesting to students and the general public; it gives an overview of the impacts of human activities for a range of taxonomic groups.