B18.1 The Human Population Flashcards
1
Q
What is biodiversity ?
A
The variety of different species in an ecosystem
2
Q
A greater biodiversity does what ?
A
Reduces interdependence of each species on another therefore providing a more stable community
3
Q
Why has the human population increased dramatically since the mid 1800’s?
A
- better health care so longer life expectancy
- Industrial Revolution allowing for larger scale agriculture
- development of new drugs
- not every society has access to contraception
4
Q
What are the effects of increasing population sizes ?
A
The expansion of human population has caused determinedly effects across the globe
Due to settlement expansion and resource demand increase
5
Q
What are the three major effects of increased population size ?
A
Pollution
Climate change
Habitat destruction
