figureThe plastic behaviour of polymers is also influenced by their morphology, or arrangement of molecules on a large scale. Stated simply, polymer morphologies are either amorphous or crystalline. Amorphous molecules are arranged randomly and are intertwined, whereas crystalline molecules are arranged closely and in a discernible order.
The bristlecone pine is an amazing plant of the alpine biome. It lives in scattered, arid mountain regions of six western states of America ranging from Colorado to California. Many are found in the Ancient Bristlecone Pine Forest in the White Mountains of California.
Western redbud (Cercis occidentalis), sometimes called California redbud and listed as Cercis orbiculata, is a multi-trunked native tree found in many Western states. It grows from 12 to 20 feet high at the rate of 24 to 36 inches a year, yielding showy purple flowers in spring. It grows in USDA zones 7 through 9.t will grow in USDA zones 6a through 9a. Texas redbud (Cercis canadensis var. texensis) grows 15 to 20 feet high and 15 to 20 feet wide, yielding magenta to pink flowers in spring. It will grow in USDA zones 6a through 9.