All the members of a species living in the same place at the same time.
_____________________ growth means that a population size grows at a faster rate when the population is larger.
Birth rate minus death rate.
The maximum number of offspring that an organism can have in their lifetime.
The maximum population that the ecosystem can support indefinitely.
________________ occurs when individuals or populations attempt to use the same resources.
One organism that consumers another for energy.
Symbiotic relationship where one benefits and the other is harmed.
Symbiotic relationship where both benefit.
Symbiotic relationship where one benefits and the other is unaffected.
The relative distribution or arrangement of a population.
The study of human population growth.
Moving into an area.
Moving out of an area.
The distribution of ages in a specific population at a certain time.
The percentage of members of a group that are likely to survive to any given age.
The number of babies born each year per 1,000 women in a population.
The average number of years a person is to live.
What do you call a model that describes how changes in population size can occur.
Land that can be used to grow crops
Term that means more people are living in cities than in rural areas.
A diagram showing all of the interconnected food chains in an ecosystem
Large variety of organisms and species in an ecosystem
An organism that breaks down dead organisms
A diagram that shows how energy decreases as it travels through the trophic levels of a food chain
A diagram showing a single pathway of energy transfer an ecosystem
An organism that eats both plants and animals
An organism that eats only other animals
An organism that eats only other plants
When two organisms fight over the same resource
All of the different populations of organisms living in an area
All of the living space on earth
Living and nonliving things interacting in an area
All of the members of the same species in an area
The organism that is hunted
The organism that hunts others for food
A trait that helps an organism survive
The scarcest resource that limits a population's size
The largest population size an ecosystem can hold
A type of relationship where one organism benefits while the other organism is harmed
A type of symbiosis where one species benefits and the other is not helped or harmed
A type of symbiosis where two organisms benefit from their relationship with each other
A relationship where to species interact and one is benefitted
Living part of the environment; includes anything made by a living organism
Non living part of the environment
Any organism able to make its own food (aka Producer)
An organism that has to eat other living things to survive (aka consumer)
Used by organisms to do everything it needs to live
Third level consumer. Often top of the food chain
The 1st level consumer. Eats producers
The average period that a person may expect to live.
The deaths of infants and children under the age of 5
The number of live births per thousand of population per year.
A poor agricultural country that is seeking to become more advanced economically.
Is the process by which an economy is transformed from primarily agricultural to one based on the manufacturing of goods.
graphical illustration that shows the distribution of various age groups in a population (typically that of a country or region of the world), which forms the shape of a pyramid when the population is growing.
The study of the characteristics of human populations, such as size, growth, density, distribution, and vital statistics.
Movement of one part of something to another. Can happen within a country or from one country to another.
is a measurement of population per unit area or unit volume – usually measured per 1000.
A survey of a given area, resulting in an account of the entire population and often the gathering of other data relating to that population at a specific time.
A community or settlement with a population of 2,000 or more
he number of deaths per 1,000 population in a given year.
A large concentration of population, usually an area with 100,000 or more people.
A group of objects or organisms of the same kind.
Also known as industrialized countries (or regions), include Europe (including all of Russia), the United States, Canada, Australia, New Zealand, and Japan.
to gain help, profit, or an advantage from something
to spread or scatter over an area
plants or animals that grow on and feed off others
male flower cells, which often look like fine yellow powder
an animal that hunts and eats other animals to survive
a place of safety, comfort, or protection
the way in which two or more living things or groups interact or deal with each other
of or relating to a beneficial relationship between different kinds of organisms
able to be hurt easily
a close relationship between two organisms and both benefit from each other. Example, trees and humans exchange oxygen and CO2
relationship between two organisms where one benefits and the other is not harmed. Example, organism lives on turtle’s shell, but the turtle is not harmed.
A species (parasite) benefits from harming another species (the host). Example, mosquitos benefit from humans, but humans feel itchy when a mosquito bites them.
The nonliving parts of an ecosystem
A predator that is at the top of a food chain and that is not preyed upon by any other animal
A living part of an ecosystem
A relationship between two species in which one species benefits and the other is neither helped or harmed
An interaction that occurs when organisms try to get the same resources
All the populations of organisms in an ecosystem
An organism that obtains energy by feeding on other organisms
A helpful interaction among organisms living in a limited area that aids each organism's survival
An organsim that gets energy by breaking down dead organisms and the wastes of living things
The process in which fixed nitrogen compounds are converted back into nitrogen gas and returned to the atmosphere
All the living and nonliving parts of an environment as well as the ineractions among them
An organism that a parasite lives in or on
An environmental factor that prevents a population from increasing
A symbiotic relationship between two organisms in which both organisms benefit
An organism's role in its environment
The process that converts nitrogen in the atmosphere into compounds in the soil that are useful to a varity of organisms
An organism that lives in or on another organism and benefits at the other organism's expense
A symbiotic relationship in which one organism benefits and the other is harmed
A process by which plants use the sun's energy to make food
A group of organisms of the same species living in the same place
A relationship in which one animal hunts, kills and eats another animal
An organism that eats producers
An organism in a food web or food chain that makes its own food
A close relationship between two species that benefits at least one of the species (3 types-mutualism, commensalism, parasitism)
A feeding level in an ecosystem
What are animals called that eat meat?
Animals that eat plants are?
If animals eat both plants and meat they are called
If the number of organisms that an environment can support due to limited resources it is
If an organism cant carry out photosynthesis then they will have to eat on other organisms they are called ?
A section of biospheres that has different types of organism intereacting with each other and with their environment is called
If a animal feeds on a herbivore and they are carnivores their known as
The living things that lives in an area and interacts with each and also depend with each others are called
The non-living things that living things need in order to survive are called
A diagram that shows the transfer of food energy from one organism to the next organism is called
A web that is made of more than two food chain inter connect is
A herbivore that feeds on plants are called
Are plants and algae they produce their own food thought process of photosynthesis are
A plant that uses photosynthesis to store energy is called
The struggle between members of the same species or different species for limited reasources is called
If the number of specfic organism in an area is known as
A symbiotic relationship in which both organism benefit is called as
A close long term of relationships between two organism of different species is called
A type of symbiotic relationship in which one organism benefits while the other is neither helped or harmed is called
A role of an organism in an ecosystemis called a
Scientific study of interactions among organisms and their environment.
Group of similar organisms that can breed and produce fertile offspring.
Group of individuals that belong to the same species and live in the same area
All different populations that live together in an area
Biological community of interacting organisms and their physical environment.
All living organisms that inhabit an environment
All life forms on Earth.
Non-living parts of an organism's habitat.
Place where an organism lives.
Any necessity of life such as water nutrients light food or space.
Number of individuals in a population.
Number of individuals per unit Sq.
Percentage of the population (or number of people of each sex )at each age level in a population
Graph of the number of males and females with different age groups of a population.
Number of males per hundred females in the population.
Graph showing the the number of survivors in different age groups for a particular species.
Moving into a population.
Leaving a population.
Movement from one place to another.
Occurs when a fixed percentage of new people is added to a population each year resulting in ever-increasing population.
An environmental factor that prevents a population from freezing.
Largest number of individuals of a population that an environment can support.
Growth pattern in which a population's growth rate slows or stops following a period of exponential growth.
Dependent factor-are limiting.
A limiting factor whose influence changes with population density; includes competition predation, and disease.
A limiting factor whose influence is not affected by population density; includes catastrophic events.
The growth rate of a population under ideal conditions.
group of organisms of the same species that live in the same area
number of individuals per unit area
the presence of too many individuals in an area for available resources
occurs when individuals of a population reproduce at a constant rate
as resources become less available the population growth rate slows or stops
the number os organisms of one species that can be supported in an enviroment
study of info about human populations
refers to the number of people of each different age level within a population
resources that can regenerate if they are alive
resources that cannot be replenished by natural process
a way of using natural resources without depleting them or causing long-term environmental harm
the total of all the variety of organisms in a specific area
unwanted change in the environment that is caused by harmful substances, wastes, gases, noise, and radiation
A land area that is covered with a shallow layer of water during some or all of the year
A permanently frozen soil layer
behavior that reduces an individual's fitness while increasing the fitness of another individual
A symbiotic relationship in which both participants benefit
An extremely cold, dry biome
Any form of behaviour associated with aggression, including threat, attack, appeasement, or flight
The study of social behavior based on evolutionary theory
a sequence of unlearned acts that is essentially unchangeable and, once initiated, usually carried to completiona sequence of unlearned acts that is essentially unchangeable and, once initiated, usually carried to completion
A species that is not necessarily abundant in a community yet exerts strong control on community structure by the nature of its ecological role or niche
Referring to a type of relationship in which one male mates with just one female
The number or individuals per unit area or volume
A group of individuals of the same species that live in the same area and interbreed, producing fertile offspring
All the organisms that inhabit a particular area; an assemblage of populations of different species living close enough together for potential interaction
awareness, reasoning, recollection, and judgment
The science of animal behavior
Dead organic matter
The area where a freshwater stream or river merged with the ocean
Any of the world's major ecosystem types
A type of ecological succession that occurs in an area where there were originally no organisms present and where soil has not yet formed
A scrubland biome of dense, spiny evergreen shrubs
The maximum population size the can be supported by the available resources, symbolized as K
A symbiotic relationship in which one organism benefits but the other is neither helped not harmed
The study of changes over time in the vital statistics of populations, especially birth rates and death rates
All the organisms in a given area as well as the abiotic factors with which they interact
In animal behavior, the formation at a specific stage in life of a long lasting behavioral response to a specific individual or object
A group of individuals of the same age in a population
A gradual reduction in the strength of a response when a stimulus event is presented repeatedly
A change in activity or turning rate in response to a stimulus
In a lake, the well-lit, open surface waters far from shore
A polygamous mating system involving one female and many males
A group of individuals of the same species that live in the same geographic area at the same time
The rate of change of a populations size, expressed in % per year
The exponential growth of a population The occurs under ideal conditions
The accelerating population growth that occurs when optimal conditions allow a constant reproductive rate over a period of time
The maximum number of individuals of a given species that a particular environment can support for an indefinite period, assuming there are no change in the environment
An environmental factor whose effects on a population change as population density changes
An environmental factor that affects the size of a population but it is not influence by changes in population density
The probability a given individual in a population will survive to a particular age
The applied branch of sociology that deals with population statistics and provides information on the populations of various countries or groups of people
The number of infant deaths per 1,000 love births
The average number of children born to each woman
The number and proportion of people at each age in a population
The potential for future increases or decreases in a population based on the present age structure
the number of individual organisms in a given area or volume
change in a population size over a specific time frame
change in population size per individual over a given time frame
highest possible per capita growth rate for a population
results in a J shaped curve
results in a S shaped curve
maximum population size the environment can sustain
biotic factor that limits a habitat capacity
combined effects that limit population growth
abiotic factor that limits a habitat's carrying capacity
advantage of favourable conditions
advantage of stable environmental conditions
competiton b/w members of the same species
competition b/w different species
organism that kills/eats others
organism that is killed/consumed
camouflage is an ex of
close relationship b/w different species
both organisims benefit
ex is cattle and cattle egrets
relationship b/w dogs and ticks
invasion & replacment of species over time
development of species where there's no soil
1st species to colonize
final stage of succession
wildfire is an ex of
regrowth of previously existing species
living to sustain our needs w/o compromising future generations