The study of the relationship between living organisms and their physical environment is ________.
In a given geographic location, the combination of all living organisms plus the physical environment in which they live is termed a(n) ________.
All ecosystems on earth make up the ________.
The type of location where a species lives is its ________.
For an organism reaching its biotic potential, the growth rate is characterized by a(n) ________.
The number of offspring produced by each reproducing member of a species, the ratio of males to females, and the time it takes offspring to become reproductively mature are characteristics of the ________ of a population.
Factors in the environment that limit the ability of a species to meet its biotic potential are known as _______ factors.
The environment's ________ is the amount of a population that can be supported indefinitely by that environment.
The point at which the number of births equals the number of deaths is ________.
zero population growth
The total biomass at each level of an ecosystem or the total amount of energy stored at each level of an ecosystem can be depicted with the use of a(n) ________.
During photosynthesis, simple sugars are produced during the _______.
The ________ feed on the producers, who use the sun's energy and nutrients from the soil to make their own food.
A biogeochemical cycle involves the cycling of a chemical element between the biomass, exchange pool, and ________.
The process by which some bacteria convert nitrate to atmospheric nitrogen gas is ________.
Unlike the carbon and nitrogen cycles, the phosphorous cycle is classified as a ________ cycle because phosphorus never enters the atmosphere.