Food security (Edexcel GCSE Biology Combined Science): Flashcards
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What is food security?
What is food security?
Sufficient, safe & nutritious food to meet dietary needs
Overuse of land leads to
Overuse of land leads to
Soil depletion & reduced crop yields
What are pathogens?
What are pathogens?
Disease-causing organisms like bacteria, viruses & fungi
Climate change impacts on agriculture
Climate change impacts on agriculture
Droughts, floods & unpredictable weather patterns
What is sustainability?
What is sustainability?
Meeting today's needs without affecting future generations
Energy moving up food chain
Energy moving up food chain
Less energy & biomass at each level
Burning fossil fuels releases
Burning fossil fuels releases
Carbon dioxide (), a greenhouse gas
Biofuels (e.g. bioethanol) are
Biofuels (e.g. bioethanol) are
Renewable alternatives to fossil fuels
New pests/pathogens impact on crops
New pests/pathogens impact on crops
Reduce yields & increase food production costs
What is the role of decomposers?
What is the role of decomposers?
Break down waste/dead organisms, return elements to soil/air