BIOL 2903 Lecture Notes - Lecture 2: Asteroid Family, Seed Dispersal, Pioneer Species
24 Feb 2017
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Sedimentary rocks- big bodies of rock- common one is limestone-calcium (calcium carbonate) relatively soft and basic in ph. When you drop hci on limestone, it bubbles up= effervesces. Calcium carbonates + hydrochloric acid- one of products of action h2o and carbon dioxide- water bubbling up the hydrochloric acid. Igneous/metamorphic-drop hci on granite and gneiss and no effervesces , nothing happens. Some limestone is made from animals whose fossil remains are full of calcium. When you drop hci on it, the rock effervesces. Poison ivy- only grow where calcium is there. Rocks folded up, no bands, cracked, undergone some change-metamorphic rocks. One gneiss eye- lacks calcium , acidic, on top soil grows bunchberry. Rocks determine where plants are found, animals determine where plants are found. When you drop hci on marble it effervesces. Physiographic regions biggest one in ontario is canadian shield, buried undr younger rocks. Flat area elevation and very wet-hudson bay lowlands.
