the living things that shape an ecosystem
Comes from a point such as sewer factory.
Contamination done by fertilizers. pesticides.
a fundamental concept in ecology refers to more an dless predictable composistion or structure of an ecological communityy
occuring in an enviroment in which new substraight devoid of vegeitation and usually lacking soil such as a lava flow or area left from retreated galciers is deposited in other words it is the gradual growth of a ecosystem over a long period of time
started by an event
something that can stop the population
a living creature or thing.
population a group of organisms of the same species inhabiting in a given area.
a group of poeple in an area
a system formed by the interaction of a community of organisms with their enviroment.
biomes are climatically and geologically defined similar climatic conditions commu8nities of plants animals and organisms.
a surface where an organism lives
a community of organsims where each member is eatin and turned by another member.
disease that killed half of europes population and brought bi rats
beginning of cars and factories became more popular.
when something can live or gorw in an area
nonliving chemicals and living factors in an enviroment
the degree of a variatation of life form in a given ecosystem
gives off energy to primaray consumer
gives energy to secondary consumer
gives off energy to the tertiary consumer
gives off energy to whatevers hunting it
an organism in the position it occupies in the food web
like the woodland in pa
found in temperture regions of the worls with warm summers and cool winters and adequate rainfall to sustain a forrest
hot dry very little rain high tempertures and hot and dry
cold snowy weathers
large lakes and fresh water rivers