Factors in an environment
What is an example of a natural factor that affects the environment
Oxygen
This is the description of all living things in an ecosystem
Biotic
The first step in the scientific method, often starting with "How," "What," or "Why."
an observation
A simple, linear path showing who eats whom
food chain
These organisms form the base of a food web, making their own food from sunlight or chemicals.
producer or autotroph
These are the two primary categories into which all environmental factors, both living and non-living, can be divided
abiotic and biotic
Biotic or Abiotic
Abiotic
A scientist forms an "educated guess" or prediction here
hypothesis
This shows the complex, interconnected feeding relationships in an ecosystem
food web
A consumer that eats only plants, like a rabbit eating grass, is known as this.
primary consumer (herbivore)
the study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources, land use, and industries.
geography
For plants, the availability of this gas from the air is a vital abiotic requirement.
carbon dioxide
The variables that are kept the same in all parts of the experiment
controlled variables
The original source of energy for almost all food webs
the sun
An organism that eats primary consumers, like a snake eating a rabbit, is at this level.
secondary consumer
oceanography
A forest's fungi, moss, and insects are all examples of this type of factor
Biotic factors
Data that uses numbers and measurements
quantitative
A relationship where two different species live closely together, like mutualism or parasitism
symbiosis
The top-level predators that consume other carnivores and have few natural enemies are called these.
tertiary consumer or apex predator
The human activity causing the most climate change
Fossil fuels
This essential liquid, along with its mineral content, is a key abiotic factor for all life.
Water
When a hypothesis is repeatedly supported by experiments, it can become this
scientific method
A relationship where one organism benefits, and the other is neither helped nor harmed.
commensialism
In an energy pyramid, a significant amount of energy is lost at each trophic level transfer. This is the approximate percentage of energy lost as heat or used for metabolic functions as it moves from one level to the next.
90%