Polar Bears
Polar bears are at risk of going extinct from climate change as more and more of their habitat vanishes into the ocean and their food sources dwindle. Sea ice takes longer and longer to come in and it is the sea ice that the bears use to hunt for their primary food source, seals. This means that it takes longer for them top get their food and they ultimately must go longer without any.
Agriculture
Climate change will affect our system of agriculture in four primary ways; Temperature, water, extreme weather, and carbon dioxide. Temperature is going to hurt crops first. Important crops we all depend on will initially show increases but, that is deceptive, because as temperatures get warmer we will see sharp declines in production.
Water resources
Increased evapotranspiration will cause soil to dry out and lead to less water in streams and rivers, and from our ground water supply, which recharges aquifers.