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36 Cards in this Set
- Front
- Back
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Primary cause of loss of biodiversity
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loss of habitat
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Consequences of habitat fragmentation
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Gene pool smaller, loss of biodiversity, and reproductively isolated. Resulting in inbreeding
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Theory of island bio geography
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Basically the further away an island is from the main land, biodiversity decreases.
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Environmental health hazards, with examples
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Physical- earthquake
Cultural- Smoking Chemical- Venom Biological- Bacteria |
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Risk management
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once released, managing how to reduce risk
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Risk assessment
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new drugs before their released
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Human endocrine system
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makes copies of your natural hormones and makes things have birth defects.
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Radon
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a highly toxic, colorless, undetectable radioactive gas. Causes lung cancer, builds up in basements
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Silent spring, Rachel Carson
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Studies to show DDT risks
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Bio-accumulation
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toxicants build up in animal tissues
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Bio-magnification
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toxicants concetrate in top preditors
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Dose- response analysis
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measures how much effect a toxicant produces at different doses
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Acute exposure
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high exposure for short periods of time to a hazard, easy to recognize
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Chronic exposure
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low exposure for long periods of time to a hazard. More common but harder to detect.
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Innocent until proven guilty
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assume products are harmless until proven harmful.. Doesn't slow down technology, but can be very dangerous
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Precautionary principle
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assume substances are harmful until they are proven harmless
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Humans spend about how much time indoors?
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90%
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Which gas makes up 78% of the molecules in the air?
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Nitrogen
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What type of rock is formed if lava cools very fast?
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igneous rocks
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Pros of mountain top removal
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gives off energy, companies make a lot of money
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Cons of mountain top removal
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lose jobs, lose habitats, water pollution
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Which type of rock would you most likely find in fossils
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Sediment rocks
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The source of all rocks`
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magma
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Ways our life is affected by geology
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Natural disaster, energy sources
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Three primary layers of the earth
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Crust, core, mantle
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Convection
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rising and cooling of magma
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Ocean plates
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heavy and thin
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Continental plates
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lighter but thicker
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Aquifer
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a body of permeable rock that can contain or transmit groundwater
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What is coral bleaching?
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When water temperatures raise and algae gets expelled
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Threats to oceanic organisms
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trash in the oceans, coral bleaching
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How much fresh water do we have?
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2.5%
Found in ice caps in glaciers |
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What is a natural way to clean water?
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using microbes (bacteria)
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Toilet to tap?
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Recycling waste water. Way cleaner than water now but no one wants to drink it so it is used for decor and fire fighters.
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What makes a substance a toxic?
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when it has an overall negative affect on humans and the environment
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How old was the planet at day zero?
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4.5 billion years old
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