Ridges of rock debris formed by a moving glacier are called moraines. Moraines are visible when a glacier retreats but are often destroyed when the glacier continues its advance. The rocks in a moraine are a jumble of clay, silt, sand, gravel and boulders.
Terminal moraines occur at the terminal end of an advancing glacier and help anchor the glacier's ice. Glaciers may also gather rocks for lateral moraines along the sides from valley walls. When a tributary glacier joins the main flow, a medial moraine may form in the center of the glacier. Medial moraines form swirls and loops of dark material.Learn More
The sun's energy comes from the nuclear fusion reactions that happen within its core. When atoms of hydrogen come together in the core of the sun, they fuse to become another element: helium. This reaction produces energy.Full Answer >
There are several biotic (living) and abiotic (nonliving) factors that are common to all types of desert biomes, or ecosystems, including cacti, fire ants, high daytime temperatures and sand. Biotic factors also include plants and animals such as sagebrush, scorpions, lizards and snakes. Abiotic factors include low temperatures at night, wind, and lack of rainfall.Full Answer >
Some of the things that cause temperatures change on Earth include the greenhouse effect, the amount of heat from the sun reaching Earth, deforestation and changes in Earth's surface with regards to reflectivity. Temperature change on Earth has become a major topic of debate in recent years because of its negative effects.Full Answer >
The saltwater biome refers to the world's saltwater bodies. The saltwater biome is found all over the world, in the form of oceans, seas, bays and gulfs. More commonly called the marine biome, the saltwater biome differs in a number of important ways from freshwater biomes. Marine biomes are home to innumerable species of fish, plants, mammals, algae, bacteria and invertebrates.Full Answer >