unit 4, biodiversity Flashcards
1
Q
what is species diversity?
A
the number of different species and individuals within each species in a community
2
Q
what is genetic diversity?
A
the variety of genes amongst all the individuals in a population of one species
3
Q
what is ecosytsem diversity?
A
the range of different habitats
4
Q
what is species richness?
A
the number of different species in a community.
5
Q
what can biodivrsity be used to describe?
A
a range of differnt habitats, from small local habitats to the entire earth
6
Q
what is an example of low biodiversity?
A
-arctic
-desert
7
Q
what can reduce biodiversity?
A
farming techniques
- destruction of hedgerows
-selective breeding
-monocultures
-over grazing
-filling in ponds and draiing wetlands
8
Q
how can you investigate diverstity?
A
- the frequency of obsevrable characteristics
- the base sequence of dna
- the base sequence of mrna
- the amino acid sequence of protiens
