Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Ch. 3-5 Ecology
From Notes
| Question | Answer |
|---|---|
| How does the earth receive its energy? | the sun |
| nutrients ___ within ecosystems | cycle |
| What is transferred in a system from one organism to another? | energy |
| The transfer of energy from organism to organism makes up the? | food chain |
| what is the bottom of the food chain? | producesr |
| how is energy lost? | life processes and loss as heat |
| What is an energy pyramid: | shows therelativea mount of energy availabe at each trophic leve. |
| How is 90 percent of energy lost? | life processes |
| What are the five nutrients that cycle through ecosystems? | hydrogen, osygen, carbon, nitroen and phosphorous |
| How much of the energy sent by the sun is available to life on earth? | 1% |
| What does the number of trophic levels depend upon? | the number of primary producers in the first trophic level |
| How big are biomes with small numbers of primary producers? | short |
| How much energy is transferred from one trophic level to the next? | 10% |
| What are the levels of organization in order? | individual, population, communitry, ecosystem, biome, and biospher |
| What makes up and ecosystem? | more than organisms, geography, weather, climate, and geologic factors influence interactions |
| What contribute to maintaining the balance of an ecosystem? | nutrient cycles |
| What is the limiting nutrient? | whatever nutrient is the most scarce |
| The limiting nutrient limits growth of what? | producers |
| What is an algal bloom? | when excess nitrogen or phosphates cuase an overgrowth of algae |
| What is a communityr | group of populations |
| what is a niche | encompasses all the aspects of an organisms way of life |
| What are the three community interactions ? | competition, predation, and symbiosis |
| What is the competitive exclusion principle | two species with the same nich will compete utnil one species is killed off |
| What is the driving force behind natural selection? | |
| what is predation | ORGANISM CAPTURES ANOTHER |
| what is the cyclical trend | too many predators |
| What is carrying capacity | max individuals supported in environment |
| What is symbiosis? | living together |
| What is parasitism | +/- |
| what is mutualism | +/+ |
| what is commensalism? | +/0 |
| What is succession? | change in community |
| What is primary succession | rock |
| Secondary Succession | soil |
| What is a pioneer species | first to inhabit an area |
| what is population density | number individuals per area |
| what is growth rate | increase or decrease in population size |
| Immigration | moving in |
| emigration | moving out |
| exponential growth | population grows drastically |
| logistic growth | resources become less available |
| What is the density dependent limiting factor? | factor that becomes limiting only when the population is dense |
| What is the density independent liming factor? | limiting factor that affects all of the populations no matter what their size |
Created by:
3j0mk1
Popular Biology sets