Example of a plant that grows in alkaline pH soils.?
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http://www.taoherbfarm.com/herbs/resources/acidplants.htm\nCopy and paste above link into your browser
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calcium hydroxide is a base, and is often added to acidic soils to raise the pH. this is very helpful, because some plants cannot absorb needed nutrients in acidic soil. acidic soil is commonly found in the northeast area of the US.
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http://plants.usda.gov/index.html
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you could do something like, the effects of pollutants on soil, then to show your experiment try growing plants in different types of soil, have one with normal soil, your control, then others with different pollutants, oil, chemicals, garbage\nHopefully this could help
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go to google.com or look under  plants.com
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Most plants grow best in soil that contains large amounts of\na)clay b)humus c)water d)sand\n\nWATER\n\nLiving things in the enviroment are ______ factors\na)abiotic b)community c)biotic d)light\n\nCOMMUNITY\n\nA community is made up of \na)factors b)enviroments c) population d)ecosystems\n\nPOPULATION\n\nFor a coral reef, ocean water is a(n)_________\na)organism b)biotic factor c)abiotic factor d)population \n\nORGANISM
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llinois groundwater scientists have found microbial communities thriving in the slag dumps of the Lake Calumet region of southeast Chicago where the water can reach extraordinary alkalinity of pH 12.8. That's comparable to caustic soda and floor strippers -- far beyond known naturally occurring alkaline environments.\n\nThe closest known relatives of some of the microbes are in South Africa, Greenland and the alkaline waters of Mono Lake, California.
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Yes - higher and lower pH's and different mineral contents affect plants. The safest bet would be to get the plant in the right conditions, and then water with the purest water available, preferably distilled.
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There isn't a "species", because Aloe vera is itself the species you are asking about. However, I have seen some varieties of it with hardly any spikes along the leaf edges. In part, I think this may happen when it is growing rapidly in length. I don't know specifically how to encourage this kind of leaves, but looking for an individual with this type of leaves might work for you? Also, look for a representative with FAT leaves, and they won't seem as spiky.
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Nitrogen, phosphorous, and potassium. There are also micronutrients like nitrates, nitrites, and several other nutrients plants need.
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in a moderatly warm(70-80F) dark damp place. and if they are "special" you might want to look into the type of soil or whatever you use to grow them on.
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tomatoes ... or anything acidic like that will cause ...\n\n"Fire in the Hole"
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You may think about checking online plant nurseries, and seed catalogs.  Good Luck!
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drift wood will lower pH as it releases tannic acid as it soaks.\n\npeat moss will have the same effect , but will release humic acids.
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Nutrition (depends on certain soils: mixed compost, clay-like dirt, moss, bark etc.), Sunlight or other warmth, Air, Water, and depth of how far the seeds or roots are planted into the soil. Different plants require different depths when being planted.
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none, nil, nada, zip\n\nalcohol dehydrates and plants need water to grow.
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soil pH typically varies on a much smaller scale than country or climate zone.  Here in the Blue Ridge Mountains, some valleys have acid soil ("sour" to the old-school farmers who didn't have a meter fancier than their tongue) while over the next hill it may be "sweet," that is, neutral to basic.  Here it depends on the kind of rock under the soil.