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.
Shapes Of Flowers. Left: Pacific madrone (Arbutus menziesii), an evergreen tree with smooth red bark that is native to forests of the Pacific coast of North America. It occurs in isolated (disjunct) populations in the mountains of southern California and northern Baja California.