1. Natural Disaster
1.1. Rising CO2 levels
1.1.1. Ocean acidification
1.1.1.1. Reduced protection from flooding and coastal erosion
1.1.1.1.1. Forced migration in small, low-lying countries
1.1.1.1.2. Enhanced climate change vulnerabilities
1.2. Global Warming
1.2.1. Possibility of frequent droughts
1.2.1.1. Increased intensity of storms
1.2.2. Increased evaporation of the water in the atmosphere transforming into fuel
1.2.2.1. Powerful storms can occur and can develop
1.2.2.1.1. Agricultural harm
1.2.3. Warmer ocean surfaces and increase in the level of sea water due to absorption of heat by the sea. The rising sea level is also for the reason of melting glaciers and thermal expansion.
1.2.3.1. Lead to increased wind speeds in tropical storms
1.2.3.1.1. Water supply becomes contaminated
1.2.3.1.2. Sewages released due to flooding
1.2.3.1.3. Electric supplies cut off due to powered lines being destroyed
1.2.3.1.4. Drowning
1.2.4. Bushfires
1.2.4.1. Humidity: At lower humidity plants become easily flamable
1.2.4.2. Available Fuel: Such as bark leaf litter and other natural dry material
1.2.5. Impacting public health
1.2.5.1. Direct impacts
1.2.5.1.1. Acute illness
1.2.5.1.2. Pyschological effects
1.2.5.1.3. Loss of personnel
1.2.5.2. Indirect impacts
1.2.5.2.1. Loss of primary health care
1.2.5.2.2. Loss of normal living conditions
1.3. Damage to hospitals and health care systems due to earthquakes
2. Food Security
2.1. Increasing Temperature
2.1.1. Decline in food yield - reduced rice and maize crop yield, especially in tropics; smaller body sizes of fishes such as haddock as a result of changes in oxygen; heat stress and disease on livestock causing death
2.1.1.1. Greater need for additional cropland to counter yield declines
2.1.1.1.1. Traditional landscape disappearance
2.1.1.1.2. Consequent rise of pesticide use
2.1.1.1.3. More widespread soil degradation and compaction from intensive crop production
2.1.1.1.4. Loss of local biodiversity
2.1.1.1.5. Increased fertiliser use
2.1.1.1.6. Greater GHG emissions from agriculture sector
2.1.1.2. Reduced global food availability
2.1.1.2.1. Increased food price - 1–29% cereal price increase in 2050 due to climate change
2.1.1.3. Farmers and local fisheries in developing countries do not have government-backed safety nets to recoup their losses
2.1.1.3.1. Reduced wages and unemployment
2.1.2. Heat stress speeds up fruit and vegetable development, impairing quality
2.1.2.1. Increased food waste
2.1.2.2. Malnutrition in developing nations
2.1.2.2.1. Micronutrient deficiencies worsen mental health symptoms
2.1.3. Increase in growth of weeds, pests and disease
2.1.3.1. Consequent rise of pesticide use
2.1.3.1.1. Resistance of pesticides from pests
2.1.3.1.2. Reduced public health
2.1.3.1.3. Soil contamination
2.1.3.1.4. Eutrophication
2.1.3.2. Decline in food yield
2.1.3.3. Disease in livestock can be transmitted to humans
2.1.3.3.1. Reduced public health
2.1.4. Increased risk of heat stress and dehydration
2.1.4.1. More frequent breaks
2.1.4.1.1. Reduced work productivity, especially in the tropics
2.1.4.2. Heat stroke
2.1.4.3. Increased mortality
2.1.4.4. Greater need for workers rights enquiries, especially in developing nations
2.1.5. Reduction in pollinators from changes in plant development
2.1.5.1. Strongly reduced fruit production
2.1.5.1.1. Malnutrition in low income areas
2.1.5.1.2. Lower availability leading to price instability
2.1.5.2. Reduced seed quality and diversity
2.2. Increasing atmospheric carbon
2.2.1. Ocean acidification
2.2.1.1. Detrimental to shelled marine life - harder for them to build shells
2.2.1.1.1. Shellfish fisheries incur huge losses along the Pacific coast of the US and forced to shut down
2.2.2. Coupled with nitrogen changes in soil
2.2.2.1. Decreases nutritional value of crops - Reduces space needed for uptake of minerals and nutrients in plants and crops
2.2.2.1.1. Zinc and iron deficiencies
2.2.2.2. Increased nitrates in soil can seep into water bodies
2.2.2.2.1. Eutrophication - increased floating plant communities that inhibit sufficient nutrient access to submerged plants
2.2.3. 15% increase in rice yields in India if CO2 levels are doubled (and other conditions remain the same)
2.2.3.1. Can increase agricultural production
2.2.3.1.1. Reducing food price
2.2.3.1.2. Greater availability