Types of Diversity
The biological and chemical processes (functions) such as energy
flow and matter recycling needed for the survival of species,
communities, and ecosystems.
FUNCTIONAL DIVERSITY
INSECTS HAVE BEEN AROUND ________ YEARS
400 MILLION
–Mineralized and petrified remains
FOSSIL
SPECIES THAT ACT AS AN EARLY WARNING SYSTEM
INDICATOR SPECIES
EXTINCTION OF AN ENTIRE SPECIES
BIOLOGICAL EXTINCTION
BIOMES are a type of __________ diversity
Ecosystems
An example of a generalist species
COCKROACH
THE ORIGIN OF SPECIES - AUTHOR
CHARLES DARWIN
The one SUPERCONTINENT
PANGEA
_________ cause premature extinction of species
HUMANS
•A set of individuals that can mate and produce fertile offspring
SPECIES
COCKROACHES HAVE BEEN AROUND FOR .....
350 MILLION YEARS
___________evolve by becoming genetically different over time
POPULATIONS
–One species splits into two or more species that can no longer breed and produce fertile offspring
SPECIATION
–All members of a species in a specific area gone
LOCAL EXTINCTION
The amount of genetic variation in a population
GENETIC DIVERSITY
THE role of an organism in an enviornment
ECOLOGICAL NICHE
–Random changes in DNA molecules in genes
MUTATIONS
Cooling and warming periods – affect evolution and ____________
EXTINCTION OF SPECIES
crossbreeding varieties within same species to enhance desired traits
Artificial selection
The variety of terrestrial and
aquatic ecosystems found in
an area or on the earth.
Ecological diversity
•Species richness ____________ towards poles
DECLINES
Genetically favorable traits that increase the probability to survive and reproduce
ADAPTIVE TRAITS
__________________dominates earth’s life support systems and NPP
TECHNOLOGY
–Add, delete, or alter DNA segments
GENETIC ENGINEERING