GE CLST M1A Study Guide - Midterm Guide: Food Web, Sea Level Rise, Food Systems

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Environmental science: studies how life on earth is sustained, what leads to environmental problems, how those problems can be solved. Large scale in time and space, hard to conduct controlled experiments. Ecological footprint: total area of biologically productive land and water needed to produce the resources and dispose of the waste, per person or per population. Overshoot: surpassing the earth"(cid:28678) (cid:28662)(cid:28660)(cid:28675)(cid:28660)(cid:28662)(cid:28668)(cid:28679)(cid:28684) (cid:28679)(cid:28674) (cid:28678)(cid:28680)(cid:28678)(cid:28679)(cid:28660)(cid:28668)(cid:28673)(cid:28660)(cid:28661)(cid:28671)(cid:28684) (cid:28678)(cid:28680)(cid:28675)(cid:28675)(cid:28674)(cid:28677)(cid:28679) (cid:28680)(cid:28678). A controlled experiment: controls for the effects of all variables except for the one being tested (independent variable); others: control; result: dependent variable. A manipulative experiment (researchers choose variables) provides strongest type of evidence because it reveals casual relationships. Natural experiments: researchers test their hypothesis by searching for correlation (statistical association among variables). Science goes through paradigm shifts. (periodic upheavals in thoughts) Sustainability = meeting the needs of the present generation without compromising the ability of future generations to meet their needs.