Environment
These are all the living things in an environment.
What are biotic factors?
This is the formula for calculating population density.
What is PD = # of individuals/unit area
inherited characteristics that allow organism to survive and pass genes to offspring
What is an adaptation?
A local park has an estimated population of 240
pigeons living there. The park is approximately
12 square miles in size. This is the population
density of pigeons in the park.
What is 20 pigeons/miles2 ?
These are all the non-living things in an environment.
What are abiotic factors?
This way of determining population size includes tagging individual organisms.
What is the mark and recapture method?
the role of an organism in its habitat, or how it makes its living
What is a niche?
In a field, ecologists counted 275 butterflies. The
field is 4 acres in size. What is the population
density of butterflies in the field?
What is 68.75 butterflies/acre
provides food, water, and shelter for an organism
What is its habitat?
This term refers to a single plant or animal.
What is an organism?
organisms that benefit by harming their host (ex: heartworms, ticks and leeches)
What is a parasite?
A vegetable garden measures 12m x 7m.
If you have 210 tomatoes growing in the garden,
What is the population density of tomatoes?
What is 2.5 tomatoes/m2 ?
If birth rate is greater than death rate, the population size ________________.
What is increases?
This term refers to all of the plants and animals living together in an environment.
What is the community?
Counting individual organisms one by one is an example of this type of observation.
What is direct observation?
a relationship in which both species benefit
What is mutualism?
There are 12 deer living on a 4 acre farm. If
6 fawns are born, 2 deer die, 4 immigrate and 3 emigrate, what is the population density of deer on the farm?
What is 4.25 deer/acre?
three types of prey adaptations
What are camouflage, protective coverings, warning coloring, mimicry, or false coloring?
This term refers to all the living and non-living things in an environment.
What is an ecosystem?
the three main ways that organisms interact
What are competition, predation, and symbiosis?
In a local pond the population density of trout is
2 fish/kiloliter. This is how many fish there are if the
pond has a total of 6000 kiloliters of water.
What is 12,000 fish?
What is commensalism?