Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
23 Cards in this Set
- Front
- Back
biosphere |
the part of earth that contains all ecosystems |
|
ecosystem |
community and its NON LIVING SURROUNDINGS |
|
Community |
populations that lived together in a defined area |
|
population |
group of organisms of one type that live in the same area |
|
organism |
individual living thing |
|
when does exponential growth occur |
when populations reproduce at a constant rate |
|
exponential growth must have ....... resources |
unlimited |
|
when does logistic growth occur |
when population growth slows or stops due to LIMITED RESOURCES |
|
what is carrying capacity |
shows the largest number of individuals that an ecosystem can support |
|
what growth does carrying capacity involve |
the logistic growth |
|
what is carrying capacity caused by |
competition for food, space, disease, and predation |
|
density dependent |
limiting factors that depend on population size (competition, predation, parasitism, and disease) |
|
density independent |
limiting factors that affect all populations regardless of size (unusual weather, natural disasters, seasonal cycles, human activities) |
|
niche |
its place in the food web (job in food web) |
|
primary sucession |
no soil exsits |
|
secondary sucession |
lands are being cleared but soil still exists |
|
biotic factors |
living things (producers, consumers, decomposers) |
|
abiotic facotrs |
non living things (water, temperature, light, soil) |
|
what is another word for producer |
autotroph |
|
what is another word for consumer |
heterotroph |
|
who make up the first trophic level |
producers |
|
who are the first level consumers |
herbivores |
|
who are the second level consumers |
carnivores and omivores |