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land breeze larynx latitude lava law of conservation of charge law of conservation of energy law of conservation of mass law leaching lever lichen ligament light-year limiting factor lipids liquefaction lithosphere litter movement of air from land to sea at night, created when cooler, denser air from the land forces up warmer air over the sea. airway to which the vocal cords are attached. distance in degrees north or south of the equator. molten rock that flows from volcanoes onto Earth’s surface. states that charge can be transferred from one object to another but cannot be created or destroyed. states that energy can never be created or destroyed. states that the mass of all substances present before a chemical change equals the mass of all the substances remaining after the change. statement about how things work in nature that seems to be true consistently. removal of minerals that have been dissolved in water. simple machine consisting of a bar free to pivot about a fixed point called the fulcrum. organism made up of a fungus and a green alga or a cyanobacterium. tough band of tissue that holds bones together at joints. unit representing the distance light travels in one year—about 9.5 trillion km—used to record distances between stars and galaxies. anything that can restrict the size of a population, including living and nonliving features of an ecosystem, such as predators or drought. group of biological compounds that contains the same elements as carbohydrates but in different arrangements and combinations, and includes saturated and unsaturated fats and oils. occurs when wet soil acts more like a liquid during an earthquake. rigid layer of Earth about 100 km thick, made of the crust and a part of the upper mantle. twigs, leaves, and other organic matter loess long-day plant longitude longshore current lunar eclipse luster lymph lymph nodes lymphatic system lymphocyte that help prevent erosion and hold water and may eventually be changed into humus by decomposing organisms. windblown deposit of tightly packed, fine-grained sediments. plant that generally requires short nights—less than ten to 12 hours of darkness—to begin the flowering process. distance in degrees east or west of the prime meridian. current that runs parallel to the shoreline, is caused by waves colliding with the shore at slight angles, and moves tons of loose sediment. occurs when Earth’s shadow falls on the Moon. property of metals and alloys that describes having a shiny appearance or reflecting light. tissue fluid that has diffused into lymphatic capillaries. bean-shaped organs found throughout the body that filter out microorganisms and foreign materials taken up by the lymphocytes. carries lymph through a network of lymph capillaries and vessels, and drains it into large veins near the heart; helps fight infections and diseases. a type of white blood cell that fights infection.