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638393
Biology B27-29
Descripción
GCSE (Biology) Science Mapa Mental sobre Biology B27-29, creado por Molly Munyard el 15/03/2014.
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biology
science
science
biology
gcse
Mapa Mental por
Molly Munyard
, actualizado hace más de 1 año
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Creado por
Molly Munyard
hace más de 10 años
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Resumen del Recurso
Biology B27-29
GM crops
Selectively breeding plants
Examples
Tomatoes, Potatoes, Squash, Papaya
Resistant to pests
Fewer chemicals used
risk of killing insects is reduced
Resistant to mould fungus
Golden rice
Contains vitamin A
Reduces the number of people in developing countries going blind
No extra cost
Tomatoes and melon
Longer shelf life
Ripening is delayed
More flavour
Concerns about GM crops
Interfering with nature
but humans are also nature and we harness them to meet our needs
GM crops were banned in Zambia in 2003
Led to wide spread famine
golden rice was tested for allergies to vitamin A
Carrots were never tested and neither were many other non GM crops
Many non-GM crops do not cause health problems because they contain a lot of saturated fat and salt
Saturated fat and salt are clearly linked to heart disease and cancer (35% of all cancers are diet-related
Classification
Living things are put into groups which make them easier to be studied
Grouping process=clasification
Observe
Characteristics (features)
Similarities and differences
many similarities=same group
Many differences=different groups
Kingdoms
placed in major groups called kingdoms.E.g. plant, animal, microbe
Each kingdom=different characteristics.E.g. plant-make their own food by photosynthesis, Animals-Made of many cells, microbes-small
Variation to suit habitats
My look very different but may be the same species.E.g.arctic fox and fennec fox
Different habitats
May share features but are not closely related.E.g. Dolphin and shark
Same habitat
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