Symbiosis
two organisms fight for the same food and resources
competition
factors that are living
biotic
mass divided by volume
denisty
if population increases __________ must increase
resources
the size of the population is considered
density-dependent factor
study of relationships between living things and their environment
ecology
factors that are not living
abiotic
evaporation, condensation, transpiration, precipitation
water cycle
bare rock, no soil
primary succession
maximum number of individuals a population can sustain
carrying capacity
all of the koalas in a eucalyptus forest
population
many different species in one habitat
community
cycles carbon dioxide throughout the biosphere
carbon cycle
no soil is present because of a long time lava flow
primary succession
helps maintain populations and keeps biodiversity
keystone species
you change to blend in with your environment, chameleon
active camouflage
which level in the food web or energy pyramid has the most energy
producers
Plants and animals die and release nitrogen into the air through what process
decomposition
soil, forests can re-establish after a forest fire
secondary succession
factors that are natural disasters, pollution, fires that affect population size
density-independent
orcas and seals are what type of relationship
predator-prey
if a country has a high death rate and low birth rate, what happens to the population
it decreases
change over time
evolution
a forest with plants, trees, shrubs, grasses, and soil
climax community
the survival of the fittest, adaptation to survive is what concept
natural selection