Food Security (causes and impacts)
Two of the three main considerations when discussing food security.
1. Food availability
2. Food access
3. Food use
Difference between extensive and intensive farming
Intensive farming is when farmers produce more food in smaller areas and in extensive farming, they use large areas of land to produce food products.
These are natural resources, such as solar or wind energy, that can replenish themselves within a human lifetime.
Renewable resources
Energy security is the uninterrupted availability of energy resources under what condition?
Affordable price
Recycling is the most important aim for the Reduce, Reuse, Recycle method to manage waste. True or False?
False
Two causes of food insecurity
water shortage, land degradation, agricultural pests and diseases, population growth, diverting crops for biofuels, poverty, price setting, climate change, and unsustainable production
Describe aquaponics
Fish eat plant waste and then produce waste that plants can use as fertilizer
Give two examples of non renewable resources
Oil, gas, coal, and nuclear fuel
Name of a cause of energy insecurity
Population growth, location of energy resources, fossil fuel depletion, supply distribution, and differing needs of countries experiencing different levels of economic development and climate change.
Most common waste disposal method employed around the world currently.
Landfill
Define GM crops
Crops scientifically developed through changes in their genes to grow under challenging conditions and produce higher levels of nutrition.
Main disadvantage of geothermal energy
Can only be used in certain areas where the heat of the Earth is close to the surface such as New Zealand, Iceland, and parts of the western U.S like Yellowstone National Park
Countries at what economic level have a higher energy demand?
HICs
Name a type of waste exported to other countries
Household waste, Hazardous waste, recyclable waste, and e waste.
Define subsistence farming
Farming that produces just enough food for the farmer and their family, leaving little to no surplus to sell for profit.
Weeds can compete with plants for space, water, light, and nutrients. This can reduce that competition-
Herbicide
According to Cambridge, this is the most important form of renewable energy in the world today.
HEPs (Hydro electric power)
Name 2 impacts of energy insecurity
Poverty, lower standard of living (education and overall health), civil unrest and conflict, increasing energy prices, and reliance on imported energy sources.
Difference between bioaccumulation and biomagification
Bioaccumulation is the build up of toxins in an organisms body, and biomagnification is the build up of a toxin in an ecosystem's food chain or web.
Name one cause of land degradation
Over cropping or Monoculture cropping
Lack of water can be a limiting factor as to how many crops can grow somewhere. What is the main way to artificially supply land with water through pipes, canals, or sprinklers called?
Irrigation
Biomass that comes from organic material like plants and animal waste can be made into biofuels. Name one biofuel.
Bioethanol and Biogas
Solution to an overly stressed energy supply system - a type of energy rationing
Rolling blackouts
What is the oxygen free process called that is necessary for fermentation
Anaerobic