What evidence is there for climate change 2 Flashcards
What is the evidence for current climate change (shrinking glaciers and melting ice)
Some Glaciers may disappear by 2035
Arctic sea ice has thinned by 65% since the mid 1970s
What is the evidence for current climate change( rising sea level)`
Thermal expansion-warm ocean waters expand in volume
Glacier, and ice cap melting adding fresh water
Low lying islands are in trouble of being submerged like Tuvalu and Maldives
What is the evidence for current climate change(Seasonal change)
Tree flowering and bird migration has advanced
Bird nesting is earlier than in the 1970s
What human activities contribute to greenhouse gases (fossil fuels)
Buring of fossil fuels which releases alot of CO2
How has agriculture led to greenhouse
Agriculture-Accounts for about 30% of gas emmisions as livestock emit methane amnd paddy roce cultivation
75% of all nitrous oxides come from manure and fertilisers
How has deofrestation contributed to greenhouse effect
70% od deforestation is used for more livestock
deforestation in tropical regions accoount for 20% of global greenhouse
Through pohotosynthesis
What are the global impacts of climate change
more extreme weather events
Stronger tropical storms
More heart related illness
Reduced crop yield
Desertification
Flooding of low lying coastal areas
Changing ecosystems
What are the negative social impacts of climate change
Water shortages
Elderly vunerable
Extreame rainfall events
How is climate changing in THE UK
Average temp rising
Winters are warmer
Summers are warmer
What are the positive social impacts of climate change
Heating costs will reduce
Fewer cold related deaths
What are the negative Economic impacts of climate change
Agriculture land lost to coastal flooding
Coastal defences will need upgrading
What are the poisticeive economic impacts of climate change
Increased summer tourism
What are the negative Enviornmemtal impacts of climate change
Coastal and salt marsh flooding and erosion
Wild life species will struggle tp survive
What are the positive Enviornmemtal impacts of climate change
Some trees and plants will flower earlier
New crops such as citrus fruits could be cultivated
