Atmospheric pressure in their center can get as low as 970 millibars. Also called wave cyclones or frontal cyclones . Mid-Oceanic Ridge Chain of submarine mountains where oceanic crust is created from rising magma plumes and volcanic activity. Also associated with this feature is plate divergence which creates a rift zone. Migration Movement of organisms in an intentional way between two points in space.
Many migrations are seasonal.
Milankovitch Theory Theory proposed by Milutin Milankovitch that suggests that changes in the Earth's climate are cause by variations in solar radiation received at the Earth's surface. These variations are due to cyclical changes in the geometric relationship between the Earth and the sun. Milky Way Galaxy Aggregation of about 400 billion stars in a flattened, disk-shaped structure in space. Our solar system is found in this structure. A unit measurements for quantifying force .