Ecosystem
All the organisms living in an area together with their physical environment
Biotic Factors
All the living and once living parts of an ecosystem.
Abiotic Factors
The nonliving parts of an ecosystem.
Organism
An individual living thing.
Species
A group of organisms that are closely related and that can mate to produce fertile offspring.
Population
All the members of the same species that live in the same place at the same time
Community
A group of various species that live in the same place and interact with each other.
Habitat
The place an organism lives
Natural Selection
The unequal survival and reproduction that results from the presence or absence of particular traits
Evolution
A change in the genetic characteristics of a population from one generation to the next
Adaptation
An inherited trait that increases an organism's chance of survival and reproduction in a certain environment.
Artificial Selection
The selective breeding or organisms by humans for specific characteristics
Resistance
The ability of one or more organisms to tolerate a particular chemical designed to kill it.
Bacteria Microscopic
single-celled organisms that usually have cell wall and reproduce by dividing in half.
Fungus
An organism whose cells have nuclei, cell walls, and no chlorophyll.
Protists
A diverse group of organisms that belong to the kingdom Protista.
Gymnosperm
Woody plants whose seeds are not enclosed in fruits
Angiosperm
Flowering plants that produce seeds in fruit
Invertebrates
Animals that lack back bones
Vertebrates
Animals that have backbones
What kind of habitat does a red backed salamander need to survive?
Damp forest floor
Which kingdoms include organisms that can make their own food?
Protists and plants
The Chihuahua is a dog that exists because of what?
Artificial Selection
Humans have promoted the evolution of insects that are resistant to insecticides by doing what?
...Trying to control pests with chemicals
What is one way that bacteria and fungi are important to the environment?
They break down dead organisms
Phytoplankton are important protists because they are the initial source of what?
Food in most ocean and freshwater ecosystems
Many angiosperms depend on what?
Animals to carry pollen and disperse seeds