TOPIC 10: ECOSYSTEMS Flashcards
The different organisation levels of an ecosystem
individuals→population→community→ecosystem
biotic factors
the living components of an ecosystem
abiotic factors
the non-living components of an ecosystem (ex: pH and temperature)
How do biotic and abiotic affect communities
they affect their ability to survive and reproduce
Factors that cause a change in population size
the amount of food available, the amount of predators, the change in abiotic factors
predation
when an organism feeds on another for its survival
mutualism
an interaction between individuals of different species that results in positive effects on reproduction and/or survival of the interacting populations
paratism
two species of plants or animals in which one benefits at the expense of the other, sometimes without killing the host organism
Why is competition important in an ecosystem
it’s important for evolution, to increase the amount of diversity in an environment
biomass pyramid
it shows the flow of energy between various levels. It also displays all their comparative masses
What are the 4 processes in the carbon cycle
photosynthesis, respiration, combustion and decomposition
photosynthesis
removes carbon dioxide from the environment
respiration
releases carbon dioxide
combustion
release carbon dioxide
how is water lost in the water cycle
transpiration, evaporation and condensation
