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17 Cards in this Set
- Front
- Back
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what is “food security” ? |
the state of having reliable access to a sufficient quantity and quality of affordable, nutritious food. |
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name 3 ways we can improve yields. |
1. add minerals (fertilisers) to make soil more fertile (irrigation system) to remove factors that limit plant growth. 2. replacing existing strains of crops with a higher yielding cultivator which have been specifically bred. 3. protecting crops from insects, diseases and competition from weeds, by using pesticides, fungicides and herbicides. |
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give a disadvantage of having limited arable land. |
they face challenges maintaining food security |
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what are the main crops we rely on? |
maize, rice (cereal crops) (root crops), potato and cassava (legumes), soya |
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food security is affected by what 3 things? |
access (physical and economic) quality (nutrients for balanced diet) quantity (enough for everyone) |
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list 3 ways in which energy can be lost from the food chain |
…. |
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shorted food chain have much ______ loss of energy |
less |
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why must food production be sustainable? |
…… |
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what is an advantage of fertilisers? |
removes unwanted nutrients and increase crop yeild |
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what is a “cultivar” ? |
a plant/group of plants selected for desirable characteristics and easily propagated. |
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what factors increase food production? |
breeding if higher yielding cultivars and protecting crops from pests, disease and competition |
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what is ‘intensive farming’ ? |
Intensive farming involves large inputs of labor/money relative to the size of the farmland. Intensive agriculture is all about efficiency—producing as much food as possible |
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what is a disadvantage of intensive farming? |
places a huge strain on environment and is hard to sustain |
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what does all food production rely on? |
photosynthesis |
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where is there fewer energy losses in food chains? |
where there are trophic levels |
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the longer the food chain is, the _______ energy is lost |
more |
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livestock production is useful in areas that are…. |
not suitable for farming crops |
