scinece bio Flashcards
identify some abiotic and biotic factors
biotic - plants, humans, insects
abiotic, rock, water, sunlight
name some basic needs for living things
water, oxygen, sunlight, food
what are the levels of organization
species- couple of animals that are the same type
population- of 1 species
community - couple of different species
ecosystem- biotic and abiotic
what is the symbol for a commensalism, mutualism, and parasitism
commensalism- + 0
mutualism- + +
parasitism- + -
what’s a niche ? (just know what a niche is on the test)
the role or functional position of a species within the community of an ecosystem
what’s photosynthesis
converts the suns energy into chemical energy in plants and stores it in the form of sugars and starches (also provides oxygen in the air that we breathe)
what’s cellar respiration
the process of breaking down sugar into a form the cell can use as energy
what’s a food chain
a food chain shows who eats whom in an ecosystem (always begin with producer absorbing sunlight)
what’s a food web
food webs are made up of several food chains
what’s a sanitary landfill
lined with plastic and clay, will prevent leaching of contaminants in the soil and is a more environmentally friendly way of disposing of garbage
name some helpful and harmful decomposers
bad e. coli- found in food
good e. coli- found in your intestines (breaks down your food)
what’s the energy flow in ecosystems
energy flows in one direction freak producers to various levels of consumers
what’s the first step in the water cycle?
evaporation - water loss from lakes river and ocean
transportation - water loss from plant leaves
what’s the 2nd step in the water cycle?
condensation - water vapour forms clouds
what’s the 3rd step in the water cycle
precipitation- water returns to earth as sleet, rain, snow, hail
what’s the 4th step in the water cycle?
surface runoff- returns water to bodies of water or to ground water
what’s the carbon cycle?
consists of photo, cellular respiration and decomposition
what’s bio invasion
accidental or planned introduction of a non-native species into a community
what’s competition
all living things will compete for things like food,water and an environment to live in
what’s predation
occurs when an animal hunts other animals for food
what is weather and give some forms of how an ecosystem is destroyed by weather
weather- can destroy plants and animals in an ecosystem
- floods
- fire
- drought
- lightning
what is the movement of matter in ecosystems
through food chains/webs, water cycle, carbon cycle
what’s the first type of monitoring
physical - uses satellites to track changes in the landscape overtime
what’s the second type of monitoring
environmental- tracks changes in climate temperatures and weather patterns
what’s the 3rd type of monitoring
chemical- monitoring asses the quality of air, soil, and water
what’s the 4th type of monitoring
biological- track the changes in organisms or population for organisms
what’s primary succession
the gradual growth of organisms in an area that was previously bare, like a rocky slope or a volcanic island
what’s a pioneer species
are the first to arrive in an area
ex - lichens and mosses
give examples of a climax community
balsam fur, owl, deer
what’s bioaccumulation
a substance builds up in a living organism from the surrounding air or water that already have the substance that is being accumulated
extirpated (what does it mean)
only gets lost in a large area
endangered …
in danger of extinction
if a species becomes extinct, it can…
no longer be found anywhere in the world
what’s captive breeding
maintaining plants or animals in a controlled environment (a zoo maybe)
what is sustainability
means that the resources from the environment can be replaced as quickly as they are used
