ecosystem
all of the organisms living in an area together with their physical environment.
protists and plants
organisms that can make their own food.
Chihuahua dog
exists because of artificial selection.
artificial selection
the selective breeding of organisms by humans for specific desirable characteristics.
oak tree, coral reef, and vacant lot
examples of an ecosystem.
Sun
provides most of the energy for ecosystems.
Habitat
This is the place where it lives, has specific characteristics that an organism needs in order to live there, and is made up of biotic and abiotic factors.
The reason some organisms are more likely to survive ( limiting factors)
because they have certain physical traits, engage in certain behaviors and lack certain physical traits.
Genes
These protect certain organism from chemicals and cause them to be resistant of the chemical.
Reproduce
In order for evolution to occur in a population, individuals with a trait that is "naturally selected for" must be able to do this.
Insect
an animals that is successful because it moves quickly, reproduces rapidly, and has a waterproof external skeleton.
abiotic factors
this describes soil and temperature in an ecosystem.
Controlling pests with chemicals
Humans have inadvertently promoted the evolution of insects that are resistant to insecticides by trying to do this.
Organisms
can adapt to their physical surroundings and to other organisms.
6 kingdoms
Animal, Plant, Protist, Fungi, Eubacteria & Archaebacteria
Archaebacteria
Single celled; lacked cell nuclei; reproduce by dividing in half: often found in harsh environments, examples methanogens and thermophiles
Eubacteria
single celled; lack nuclei; reproduce by dividing in half; incredibly common, examples proteobacteria and cyanobacteria
Fungi
absorb their food through their body surface; have cell walls; most live on land
Protists
most single celled but some have many cells; most live in water, examples: paramecium, euglenas and amoebas
Plants
These organisms have many cells, make their own food by photosynthesis and have cell walls and chloroplasts.
Animals
These organisms have many cells, no cell walls, ingest their food and live on land and water.
Energy, Mineral nutrients, Carbon dioxide, Oxygen, Living organisms
basic components of an ecosystem.
Biotic factors
Living and once living parts of an ecosystem
Abiotic factors
Non-living parts of an ecosystem
Habitat
The place an organism lives
Evolution
Any change in genetic characteristics of a population from one generation to the next
Hereditary
relating to genetics or inheritance
Natural Selection
Individuals with genetic traits that make them more likely to grow up and reproduce in the existing environment will become more common in the population from one generation to the next
Charles Darwin
Proposed that over many generations, natural selection causes traits of populations to change to survive
Adaptation
An inherited trait that increases the organism's chances of survival and reproduction in a given environment
Coevolution
The process of two species evolving in response to long-term interactions with each other
Resistance
The ability of one or more organisms to tolerate a particular chemical that is designed to kill it
red backed salamander's habitat
damp forest floor
organism
is an individual living thing.
population
all the members of the same species that live in the same place at the same time.
species
a group of organisms that can mate to produce fertile offspring.
community
a group of various species that live in the same place and interact with each other.