DIVERSITY AND CLASSIFICATION (lesson one) Flashcards
what is biodiversity
biodiversity is a measure of variety and number of life forms on earth
biodiversity is bulit out of three interwind features
- ecosystems
- species
- genetic
What makes an ecosystem stronger than another?
biodiversity
what are species?
a species is a group where the members can reproduce under natural conditions and so can its offspring
loss of biodiversity can cause?
- can threaten our foods
- eliminate sources of natural medicine
- have a big impact on forestry and tourism
- impact biogeochemical cycles
How do species keep an ecosystem stronger?
Species that survive longer can continue interactions that benefit the ecosystem
what is a strong ecosystem?
one that is adaptive to natural disasters and has interconnected relationshipsthat promote the health of the ecosystem.
How do genetics make an ecosystem stronger?
Better genetics allow species to live longer and survive in harsh conditions
examples of biogeochemical cycles
water cycle and carbon cycle
two categories of human-meditated loss of biodiversity?
local and global
4 local changes?
- Land use changes
- Pollution
- Resources exploitation
- Exotic species
What is the systematic grouping of organisms into categories based on defined characteristics?
Biological classification (ie. producers, decomposers, consumers)
What is a Genus?
a taxonomical rank
who is carl linnaeus
father of taxonomy
what is binomial nomenclature
a two word short formed name, the first name is always the genus, the second name is the species name
(ex. ursus americanus = black bear and ursus maritimus = polar bear)
