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Jean Piegat: Biography & Theory of Cognitive Development

Developed a theory about childhood development that still greatly influences behavioural psychologist and educators today. Biography: -born in 1896-1980 in Neuchatel -attended the University of Neuchatel -received a PhD in Natural Science -Moved to Paris, France to teach at an all boy school -Here was what led him to his theory that young children’s cognitive…

The Story of Oedipus

We don’t know whether there was a historical Oedipus. “Oedipus” means “swollen feet”. The Greeks pronounced it “oy-DEEP-us”. Oed- is the same root as “oedema / edema” (tissue swelling; the British preserve the initial “o”), while “-pus” is feet (hence “octopus”, the eight-footed animal.) Laius and Jocasta were king and queen of Thebes, a town…

Environmental Contaminants: Heavy Metals, Synthetic Organic Contaminants, Volatile Organic Compounds

What is an Environmental Contaminant? Environmental contaminants are substances that, when accidentally or deliberately introduced into the environment, may have the potential to harm people, wildlife and plants. Some of these contaminants may have been manufactured for industrial use and because they are very stable, they do not break down easily. If released to the…

Agricultural Practices: Farming, Pesticides, Terminology

What is agriculture? Agriculture is the production of food and goods through farming and forestry. The development of agricultural techniques is credited for creating food surpluses that enabled the development of more densely populated societies with distinct classes Agriculture uses many techniques, to expand the lands suitable for plant raising. For example: Digging water-channels and…

Types of Waste

There are many different types of Waste Solid Waste Liquid Waste Gaseous Waste Animal by-products Biodegradable waste Biomedical waste Chemical waste Commercial waste Construction and demolition waste (C&D waste) Electronic waste (E-waste) Green waste Grey water Hazardous waste or Toxic Waste Human waste Industrial waste Radioactive waste Recyclable waste Sewage Slaughterhouse waste Wastewater Industrial Waste…

Evolution: Genetic Drift, Gene Flow, Mutations, Random Change

Random change Key factors that can cause evolution: –Small populations are more variable to changes in allele frequencies -non-random mating opportunities result in only those “preferred” traits being passed onto future populations –new alleles may be created when mutations occur (changes the frequencies of new and original alleles) -migration causes changes in the relative abundance…