7.3.1 biodiversity Flashcards
1
Q
what is biodiversity
A
variety of different species of organisms on Earth, or within ecosystem
2
Q
why do different species depend on each other
A
Food
Shelter (eg. birds nesting in trees)
Maintenance of the physical environment (eg. tree roots provide stability for soils, ensuring they do not get washed away. This in turn provides a stable habitat for other plant species)
3
Q
how do biodiversity ensures the stability of ecosystems
A
by reducing the dependence of one species on another for these three things
4
Q
how are humans affecting biodiversities
A
landfill, pollution, global warming, deforestation
