B19 Human influences on ecosystems Flashcards
1
Q
What is an ecosystem?
A
a unit containing the community of organisms and their environment, interacting together
2
Q
What is biodiversity?
A
The number of different species that live in an area
3
Q
Describe the reasons for habitat destruction?
A
increased area for housing
crop plant production
livestock production
extraction of natural resources
freshwater
marine pollution
4
Q
What are the effects of deforestation?
A
reduced biodiversity
extinction
loss of soil
flooding
increase of carbon dioxide in the atmosphere
5
Q
Why are organisms are endangered?
A
climate change
habitat destruction
hunting
pollution
introduced species
6
Q
How can endangered species be conserved?
A
monitoring and protecting species and
habitats
education
captive breeding programs
seed banks
