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Tag Archives: INDICATOR

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Pollution Indicator species: Lichen & Invertebrates

ScienceBy William Anderson (Schoolworkhelper Editorial Team)April 28, 2013Leave a comment

-A species of organism that can indicate an area of pollution by its presences or absence in that specific area. Lichen – How does it indicate air pollution? Lichen is a moss like plant that grows on exposed areas such as on rocks and on trees. Lichen relies on nutrients that it absorbs from rainwater…

FACTORS THAT AFFECT RATES OF REACTION

ScienceBy William Anderson (Schoolworkhelper Editorial Team)May 22, 2010Leave a comment

The Kinetic Molecular Theory states that matter is made up of particles that are always in constant motion and that the particles move more quickly at higher temperatures. From this theory came the COLLISION MODEL for chemical reactions. According to the collision model there are two ways to make a chemical reaction go faster: 1)  …

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