Food security and farming Flashcards
(4 cards)
What is food security
Having enough food to feed a population
What things can threaten food security
-increasing p…, higher d… for f…
—>already s… foods can become even m… scarce
-f… can be affected by new p… and d…, leading to a lower c… yield
—>causing f…
-high i… costs of f… can make it too e… for some people in c… to start or m… food p…
-increasing population, higher demand for food
—>already scarce foods can become even more scarce
-farming can be affected by new pests and diseases, leading to a lower crop yield
—>causing famine
-high input costs of farming can make it too expensive for some people in countries to start or maintain food production
How are fish stocks maintained
-fishing q…
—>limits on the n… and size of f… that can be c… in certain a…
—>prevents certain s… from being o…
-n… size
—>different l… of the mesh s… of the fish n…, depending on what is being f…
—>this is to r… the number of u… and discarded f…
—>eg using a b… mesh size allows s… unwanted s… to escape, and allows y… fish to s… through allowing them to reach b… age
-fishing quotas
—>limits on the number and size of fish that can be caught in certain areas
—>prevents certain species from being overfished
-net size
—>different limits of the mesh size of the fish net, depending on what is being fished
—>this is to reduce the number of unwanted and discarded fish
—>eg using a bigger mesh size allows smaller unwanted species to escape, and allows younger fish to slip through allowing them to reach breeding age
How can food production be made more efficient
-limiting the m… of l… and keeping them in t…-controlled e…
—>reduces the t… of energy from l… to the e…
—>makes farming more e… as the animals use less e… to move and m… their body t…
—>so more e… is used for g…
-limiting the movement of livestock and keeping them in temperature-controlled environments —>reduces the transfer of energy from livestock to the environment
—>makes farming more efficient as the animals use less energy to move and maintain their body temperature
—>so more energy is used for growth
