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Geography

magma

Geography; Geography

Molten rock containing liquids, crystals, and dissolved gases that forms within the upper part of the Earth's mantle and crust. When erupted onto the Earth's surface, it is called lava.

A zone in the Earth's interior between the crust and the core that is 2,900 kilometers (1,800 mi) thick. The lithosphere is composed of the topmost 65-70 kilometers (39–42 miles) of the mantle and ...

maritime climate

Geography; Geography

A climate strongly influenced by an oceanic environment, found on islands and the windward shores of continents. It is characterized by small daily and yearly temperature ranges and high relative ...

mediterranean climate

Geography; Geography

A climate characterized by moist, mild winters and hot, dry summers.

mesquite

Geography; Geography

A spiny deep-rooted leguminous tree or shrub that forms extensive thickets in the southwestern United States.

metamorphic rock

Geography; Geography

Rock that has been physically altered by heat and/or pressure.

metes and bounds

Geography; Geography

A system of land survey that defines land parcels according to visible natural landscape features and distance. The resultant field pattern is usually very irregular in shape.