Difference between biotic and abiotic factors - Our Environment Video Lecture - Class 10

both abiotic and biotic factors are
crucial in an ecosystem biotic means
living think bio biology life abiotic a
means without like a symmetry without
symmetry so abiotic would be without
life or nonliving biotic or living
factors are the organisms and the
relationships between other organisms so
like this rabbit and its relationship
with this Fox or this rabbit and its
relationship with the dandelion all
these are biotic factors and abiotic or
nonliving factors include things like
temperature oxygen supply sunlight or
the presence of water soil type all
these are abiotic factors these two
factors work together to balance the
ecosystem notice how when we talk about
abiotic factors we have to talk about
ecosystems or higher levels of
organization because levels of
organization below ecosystems only deal
with the biotic factors so the abiotic
environment supports organisms and
organisms contribute to and modify the
abiotic environment let me quickly
summarize the relationships between
organisms and water sunlight and oxygens
apply three really important abiotic
factors
so first the presence of water is
essential for all living things that's
pretty self-explanatory humans probably
do the most--it ampere with water they
displace redirect heat use up water and
a great deal many other things which can
greatly change the surrounding ecosystem
for example by building a dam people
slow down the flow of water in a river
this can cause flooding upstream and
drying out downstream of the dam
organisms unused to being swamped or
dehydrated will immediately have a hard
time adjusting some organisms die and
drastically begin to change the
ecosystem balance as you can see the
presence of water amount of water
placement of water are all really
important so sunlight is also really
crucial and is the ultimate source of
all energy
different organisms can change the
presence of sunlight for example a tall
tree will provide shade an entire forest
would cover an entire area with shade
and therefore there's a different amount
of sunlight within the forest than
outside the forest and plants that live
in the forest must either fight for the
sunlight by growing taller or adapt to
the shade at the bottom the terrestrial
and aquatic oxygen supplies
so here's terrestrial and this would be
aquatic within the water are also really
crucial and can be altered one of the
biggest contributors to oxygen is plants
so particularly under water the more
photosynthetic organisms there are in an
area the more oxygen there is
concentrated in the area so if you had
like some type of seaweed or something
some type of photosynthetic organism
living in the water this side of the
lake would have more oxygen than this
side of the lake which doesn't have
plants pollution can also be a
significant factor in influencing access
to oxygen for example air pollution can
make the intake of air dangerous and
unhealthy like there's a correlation
between increased asthma and respiratory
diseases in human populations with the
increase of factory air pollution in
aquatic environment water pollution can
lower the oxygen concentration and
favour different types of organisms I'll
save the nutrient cycles which are also
a biotic factors for different videos
but they are also crucial and keep the
ecosystem balanced