Weegy: The Mid-Atlantic Ridge is an example of what is called a slow-spreading mid-oceanic ridge system, which typically is broad with a deep, central rift valley. [ [ (Fast-spreading systems are more typical of the Pacific Ocean, where deep trenches are more common than in the Atlantic.) New seabed is continually being formed from the spreading ridge, which creates relatively shallow areas in the middle of the Atlantic above the extremely flat abyssal plains that begin at the margins of the continental shelves. ] ] (More)

Weegy: Volcanoes are formed by the accumulation of magma (molten rock that forms below a planet's surface). Magma can erupt through volcanic vents. As magma forms, it rises and accumulates in underground reservoirs before it erupts onto the surface. [ With each eruption, the erupted material adds another layer to the growing volcano. ] User: The seven continents used to be one huge supercontinent called Weegy: Pangaea (also spelled Pangea or Pang a) is a theoretical supercontinent that existed about 250 million years ago. Scientists believe all seven continents as they are today were once part of a supercontinent and have slowly moved apart. ] User: The seven continents used to be one huge supercontinent called Weegy: Pangaea (More)

Weegy: Soil User: _____ converts ammonium into nitrates, while _____ converts nitrates into nitrogen gas. Weegy: results in nitrates being converted to nitrogen gas and returned to [ ] (More)

Weegy: Magma (Plurals: magmas and magmata) is molten rock that sometimes forms beneath the surface of the earth (or any other terrestrial planet) that often collects in a magma chamber inside a volcano. Magma may contain suspended crystals and gas bubbles. [ [ [ By definition, all igneous rock is formed from magma. ] ] ] User: what is known as th new stone age? (More)

Weegy: Most energy in an ecosystem comes originally from the Sun. User: You are a _____ consumer if you feed on secondary consumers. Weegy: B Primary User: About how much energy is transferred between a producer and primary consumer? (More)