[EVS1101] - Midterm Exam Guide - Ultimate 35 pages long Study Guide!

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Ph is dangerously acidic for water in rivers, kills ecosystems. Minerals are soluble under acidic conditions, arsenic and mercury are among those minerals. Suggested for pregnant women not to eat large fish (tuna), they bio accumulate amounts of mercury and your child will have a chance of having mental problems. Earth is only planet where there is life. More exploration to find other planets that now or used to contain life. To ha(cid:448)e life, you (cid:396)e(cid:395)ui(cid:396)e (cid:449)ate(cid:396); ho(cid:449) a(cid:374)d (cid:449)he(cid:374) life sta(cid:396)ted (cid:449)e do(cid:374)"t know. Simplest life form on earth is bacterium (they are thought to be the first living beings) Rare to find fossils that are preserved and billions of years old because all beings are made of carbon and decompose. Suspected that there is ice on mars. Indirect evidence that water once flowed on mars. Age of the ea(cid:396)th: 4. 6 (cid:271)illio(cid:374) yea(cid:396)s" old. Oldest rock: 4. 55 billion years old; found in northern quebec.