Bio final semester one (ecology)

Ecological Pyramid
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Terms in this set (19)
Ecological Pyramid
Shows where the flow of energy from
the sun goes
Begins with producer (plants)
1st Level Consumers (herbivores),
2nd Level Consumers (omnivores/carnivores) ,
3rd level Consumers (Carnivores)
consumer
Heterotroph- eats / absorbs energy from other organisms
Producer
Autotroph- Makes its own energy/food from Sun or inorganic compounds (chemicals)
Renewable
Can be replaced in our lifetime
biodiversity
all of the genetically based variety of living organisms found in the biosphere
Global Climate Change
(global warming)
Change in earth's average climate due to natural and man caused buildup of carbon dioxide and other gasses in the atmosphere. Melting ice caps.
Greenhouse effect
buildup of gases in the atmosphere that blanket the earth and prevent heat from escaping into outer space
Nonrenewable
They require hundreds of millions of years to form.
Example: Coal, Oil, Even Mature forests that take 100 or more years to grow. (Cannot be replaced in our lifetime.)
Levels of Organization that ecologists study (small to large)
(Six People Can Eat Big Bird)
Species, Population, Community, Ecosystem, Biome, Biosphere
Original source of most of energy in the ecosystem
Sun
What causes the Carbon Dioxide levels to rise? What puts CO2 into the atmosphere?Natural: Volcanos, Cellular Respiration (breathing out) Man-made: burning of fossil fuelsBiggest Cause of Environmental Change on Earthhuman activitya hawk that ate a snake that eats a rat that ate a grasshopper that ate grass: The hawk is a ________________4th level consumerWhy is Biodiversity so importantWithout this natural resource, we would not have as many medicines, food and goodsEcologystudy of interactions among organisms and their environment20 years ago, an area was a forest. It had deer, tree squirrels, and birds that nested high in the trees. A fire burned the trees and grass, and bushes grew instead. Now it has ground squirrels, rabbits, and low nesting birds instead. Why is the community different now?The group of living things is different because the abiotic characteristics of the habitat changed.How might the destruction of many rainforests affect other ecosystems.Decrease the amount of available Oxygen as they provide a large percentage of it.If an animal has the space, mates, food, water, and low disease, what will happen to the population?It will raise until the food supply runs low, then it will dropWhat is an invasive species?An organism that is not native to the area that can cause harm to the existing ecosystem.