interaction with ecosystem Flashcards
ecology
study of rls between living things and non living things
population
grp of organisms of the same species living tgt in a same habitat
community
diff populations that lives tgt
habitat
a place where organism live and reproduce. provides food and shelter, not no protection
ecosystem
complex system of interactions between living things and their environment
examples of ecosystem
desert, ponds, rivers
biotic environment
interactions of living things
parasitism
abiotic or biotic? 1 species gain benefits from causing harm to the host.
predator-prey
abiotic or biotic? Predator kills and consumes prey in a very short period
mutualism
abiotic or biotic? Interaction between two species that benefit each other.
commensalism
abiotic or biotic? one species gains benefit WITHOUT causing harm
abiotic factors
Air, temp, water, light, minerals, acidity
light
- provides warmth
- helps with photosynthesis
- find food and avoid danger
temp
affect growth, activities and survival of organisms
air
- oxygen needed to survive
- CO2 for photosynthesis
water
- basis substance to survive as every living cell is mainly made up of water
- habitat for marine life
acidity
determine type of organism living in the habitat
diff between scavengers and decomposers
scavengers handle larger remains, while decomposers break them down further into nutrients.
reason for lost of energy
- Respiration
- Removal of undigested food
- Radiation from body
how much energy is transferred to the next trophic level
10%
over-hunting
- over fishing disrupts the marine ecosystem, causing population of fish to decrease
- Animals become extinct or endangered as they are being hunted for food, recreation purpose or body parts
deforestation (animals)
- destruction of vast areas to provide land
- damages animals habitat
deforestation (AIR)
- enhanced greenhouse effect, increase in global warming
- when forest cleared, soil exposed
- topsoil can be washed away, causing soil erosion
- may cause landslides
- a reduction in trees mean less oxygen is given out
structural VS behavioural
structural - physical feature
behavioural - behaviour
photosynthesis
CO2 + water = glucose + O2
respiration
- Glucose + O2 = CO2 + water
- occurs 24/7
respiration and breathing
breathing does not involve chemical reaction, LUNGS and ATMOSPHERE
Respiration takes place in ALL body cells, chemical reaction
minerals
soil
