nutrient cycling contains nitrogen, phosporus, and carbon in its proccess
the nutrient cycle is a process where
nutrients disperse into other biotic
life forms 
sustainability includes nutrients that are found
in soil to help plants grow 
 Examples of abiotic
 biodiversity is connected to community
because communities don't always have the 
same organisms living together.
commensalism is where one organism
benefits off of another organism but
it does not harm the organism that is 
not beneficial
parasitism is an interaction between organisms
where only one organism benefits while the other
is either hurt or killed.
mutualism is an interaction between two
organisms where both of the organisms benefit
as already explaned, an autotroph is
an organism that can create food for
itself! 
the opposite of an autotroph, a heterotroph
has to feed of other living organisms to 
survive so they have to find their own food. 
photosynthesis is a form of energy 
transformation due to the fact of
it being literal solar energy 
 photosythesis travels to the Chloroplast  
 cellular respiration is the process of food being
converted to energy (Glucose) in an animal body 
which help animals live healthier. it is a producer 
because it simply produces energy for all animals
 photosynthesis produces energy through solar energy
while plants and algae convert that energy to chemical 
helping them grow healthy
 trophic levels seperate different species by 
how they rank on the food chain
 Bioaccumulation is the consumption of a 
toxin from any animal on any trophic level 
later to be passed through trophic levels in 
biomagnification
biomagnification is the transfer of a toxin 
from different species passing on through the
trophic levels
Trophic efficiency is the separation and
organization of different species 
 Decomposers  are fungi or bacteria
who break down dead plants/animals
making organic nutrients for the ecosystem
Producers are certain organisms
who make their own food, this can 
be categorized as autotrophs
 A consumer is a category of species that 
consumes 
a community is also a very important aspect of a 
natural living environment. a community needs to 
be established in an ecosystem to sustain peace 
to the organisms inside of the ecosystem. 
 competition is a certain characteristic 
for some animals that compete for food
or mating
predation is another certain characteristic 
that only some animals have. this specific 
characteristic is found in certain animals who
hunt for their food 
symbiotic relationships are the most
advanced of the relationships. it includes 
all 3 of the relationships below. 
mutualism: two organisms that help each-other
and both benefit. parasitism: where one organism
uses another organism for its own benefit and 
harm the other organism. commensalism: where 
one organism uses the other to benefit while the 
other organism isn't affected at all.
 Food webs are a very well-known
the aspect of biotic living. food webs are  
an interconnection of food chains.
food chains are one of the most important
biotic characteristics keeping species population
levels stable 
 an ecosystem needs to be sustainable
in order to last and keep everything
in it living
non-living things 
living things 
the photosynthesis creates glucose out of
the chloroplast that is eaten by a human. 
during the consumption, oxygen (02) enters
the human system as-well as the glucose
eutrophication is a result of nutrient cycling when a body of water is enriched with all of these nutrients 
after exiting the animals mitochondria with water (h20)
and carbon dioxide (c02) the process repeats