Ecological balance is a theory stipulating that natural conditions, including numbers of various animal and plant species, remain stable on their own through variations over time. The theory, also known as balance of nature, also holds that natural equilibrium can be changed significantly by new species entering an ecosystem, the disappearance of some species, man-made changes to the environment or natural disasters.Know More
Examples of disturbances to ecological balance include bombing during the Vietnam War that destroyed habitat for many species. As part of modern global commerce as of 2014, trees and vegetation are sometimes removed, and those areas in which vegetation is removed and pavement is added tend to expand. As a result, water balance changes, and species of animals and plants must move or change to find alternative habitats and sources of food.
The theory of ecological balance holds that natural systems typically correct themselves when small changes occur. For instance, if a particular species becomes too plentiful, numbers of a predator species may also increase temporarily to bring total numbers back into balance. As of 2014, most ecologists no longer subscribe to the theory of ecological balance and instead feel that natural systems are best described by catastrophe theory, which holds that small changes in one component of a natural system can result in significant and permanent changes to the entire system.Learn More
My Science Box explains that Earth is a biosphere, as it is a global sum of all ecosystems. A biosphere is a closed system containing various zones of life. All living organisms within a biosphere are organized into various layers of complexity. These layers extend from the individual, to populations and communities, to ecosystems and biomes.Full Answer >
The densest material on earth was created by the Large Hadron Collider and named quark-gluon plasma. The substance can only exist in extremely hot temperatures and is denser than a neutron star.Full Answer >
Felsic, intermediate and mafic igneous rocks differ in their mineral composition. Felsic rocks are light in color and are composed of feldspars and silicates. Mafic rocks are darker and are composed of magnesium and iron. Intermediate rocks are composed of the minerals amphibole and feldspar and contain a combination of light and dark minerals.Full Answer >
An ice cap is a glacier that covers less than 19,000 square miles. These miniature ice sheets form in polar and subpolar regions that are high in elevation and possess a relatively flat surface. Glacial ice that covers an area greater than 19,000 miles is known as an ice sheet.Full Answer >