Unit 2 of Science Flashcards
Ecosystem
An area where living things interact with other living
and non-living things
Ecosystem
An area where living things interact with other living
and non-living things
Biotic
Living things in the environment, such as humans, plants,
birds, animals, and insects.
Biotic
Living things in the environment, such as humans, plants,
birds, animals, and insects.
Species
a group of organisms that reproduce with each other
Population
Members of species that live in the same
area and share resources
Biotic
Living things in the environment, such as humans, plants,
birds, animals, and insects.
Abiotic
Non-living physical features of the environment, such as air,
rocks, water, and temperature.
Population
Members of species who live in the same
area and share resources
Community
Populations of different species interacting and sharing resources
Needs of living things
water
food
habitat or living conditions
Oxygen and exchange gases.
Symbiotic Relationships
where two species live closely
together in a relationship
Mutualism
both organisms benefit from the relationship.
Commensalism
one organism benefits and the other organism appears
neither to gain nor lose from the relationship.
Parasitism
one organism benefits and the other organism is harmed
from the relationship
A parasite
organism that obtains nourishment or other life support from a host.
Adaptation
characteristic that helps an organism survive
and reproduce
Structural adaptations
physical features like the beak on a bird or the fur on
a rabbit. These features help them survive.
Behavioral adaptations
anwser with examples
bird calls, migration and looking both
ways before crossing a street are
behavioral adaptations.
Adaptation
Natural Resources
how we meet our basic needs
Non-renewable resources
cannot be produced, grown, or generated
Renewable resources
are replaced by natural processes
Consumers
Any organisms that must seek out and eat
Herbivores
animals that eat plants
Carnivores
animals that only eat other animals
Omnivores
animals that eat plants and animals
Scavengers
feed on dead or decaying matter
Decomposers
feed and break down organic matter
Producers
organisms that
use energy from the sun to
make their food
Cellular Respiration
chemical reaction that occurs within the cells of all living
things
Cellular Respiration is …….
Photosynthesis backwards
Cellular Respiration is …….
Photosynthesis backwards
Cellular Respiration is …….
Photosynthesis backwards
What is a food chain
food chain is a diagram that shows
how energy moves
Where does energy come from
the sun
What does a food chain start with
PRODUCERS
Who is the primary consumer
Herbivore
Who is the secondary consumer
carnivore
How much energy is lost through breathing heat and digestion
90%
How much energy is transferred between organisms
10%
What are food webs
food chains linked
Is a food web more realistic than a food chain
Yes
pyramid of numbers
shows the number of organisms on each level
Pyramid of biomass
how much each level weighs
Bioaccumulation
substance builds up in
an organism’s body from the
surrounding air or water, or
through consumption
Bioaccumulation
substance builds up in
an organism’s body from the
surrounding air or water, or
through consumption
Biomass
total mass of all the organisms in an
ecosystem.
What does changes in either
abiotic and biotic
factors do
affect the members of the food web
Bioaccumulation
substance builds up in
an organism’s body from the
surrounding air or water, or
through consumption
Run-off
Water that runs off the ground into lakes, rivers or streams.
Run-off
Water that runs off the ground into lakes, rivers or streams.
Ground water
Water stored in soil
what do we call when matter continually moves
from the abiotic environment
to the biotic environment.
a cycle
Ground water
Water stored in soil
what are living and non living things made of
made up of matter.
4 major components of the water cycle
- Evaporation
- Transpiration
- Condensation
- Precipitation
Ground water
Water stored in soil
Run-off
Water that runs off the ground into lakes, rivers or streams.
Quadrat Analysis
square plot that
represents the
surrounding ecosystem –
create an population estimate
Quadrat Analysis
square plot that
represents the
surrounding ecosystem –
create an population estimate
Quadrat Analysis
square plot that
represents the
surrounding ecosystem –
create an population estimate
Ecology
study of organisms and how they interact with the
environment around them
Ecologists
people study the interactions between living things and their
environment
Quadrat Analysis
square plot that
represents the
surrounding ecosystem –
create an population estimate
Bioinvasion
New species added to the food web/chain
When is a species considered invasive
when its ability to survive in its new conditions allows it to outcompete species.
Predator
organisms that catches and eats other organisms
Prey
organisms that is caught and eaten
Does the relationship
between predator and
prey cause both
organisms to evolve
Yes
factors that can affect interactions in an
ecosystem
Weather
Succession
Gradual process
2 Types of Succession
- Primary Succession
- Secondary Succession
Primary Succession
start of a new ecoystem
What do mosses and lichen do in primary sucession
break down rocks until they become soil
Organisms that first
appear are called
pioneer species
Secondary Succession
regeneration of a area after a disturbance
In Secondary Succession Some original species ……………..
, some get ………..
anwser with word bank
displaced endargered remain hunted
1 remain 2 displaced
DDT
Chemical
pesticide that
was used to
kill mosquitos
Extinction
Occurs when
a species no
longer exists
Endangered
in danger of becoming extinct
Ecosystem Monitoring Physical
Uses aerial images to track changes
Threatened
Species whose numbers are quickly declining
Ecosystem Monitoring Chemical
Assesses the quality of air, soil and water
Ecosystem Monitoring Biological
Tracks the changes in organisms or populations
Ecosystem Monitoring Environmental
Tracks changes in climate, temperature and weather patterns
