They are also valued for their contribution to ecosystem services â ecosystem functions that are of direct benefit to humans through their action on soil processes. Earthworm benefits to ecosystems Earthworms are sometimes known as âecosystem engineersâ because they significantly modify the physical, chemical and biological properties of the soil profile. These modifications can influence the habitat and activities of other organisms within the soil ecosystem.
The Northern Hemisphere includes all of North America, the northern reaches of South America, about two-thirds of Africa, all of Asia excluding (parts of Indonesia) and all of Europe.he planet's four hemispheres are each shaded a dark gray. The Equator, that imaginary horizontal line at 0Âº degrees latitude at the center of the earth, divides the earth into the Northern and Southern Hemispheres.
Hemispheres: The earth is divided into four hemispheres. One way is at the equator, the imaginary line circling the earth halfway between the North Pole and the South Pole. This divides the earth in half from the top to bottom.The Northern Hemisphere is the northern half of the earth between the North Pole and the equator. The Southern Hemisphere is the southern half between the South Pole and the equator. The other is from east to west.The Eastern Hemisphere is referred to as the Old World while the Western Hemisphere is considered the New World. The Eastern Hemisphere consists of four continents: Europe, Asia, Africa, and Australia.s you know the equator is a line of latitude that divides the Northern Hemisphere from the Southern Hemisphere. Longitude and Time: Another set of imaginary lines on a globe is the lines of longitude.