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