Flashcards
BIOLOGY 3B
Cards in this deck (25)
- 1how are lakes and oceans an important factor in removing CO2 from the atmosphere?CO2 can be sequestered in oceans, lakes and ponds and this is an important factor in removing CO2 from the atmosphere
- 2who went a bit crazy with adding images?
- 3who went a bit crazy with adding images?
- 4what will you miss after you have gone to giggleswick?
- 5what man is so legendary that he is cooler than any biogas generator?
- 6—learn the process that happens in a biogas generator
- 7how is mycoprotein produced?-grown on glucose syrup
-in aerobic conditions
-the biomass is harvested and purified - 8what is mycoprotein?a protein rich food suitable for vegetarians.
- 9What fungus is used for producing mycoprotein?fusarium
- 10Fish stocks are declining. Name 2 methods that play an important role in the conservation of fish stocks.-net size limitations (no smaller fish caught and wasted)
-fishing quotas (fishermen only allowed to catch a certain amount each day) - 11how could the efficiency of food production also be improved?keeping animals in a controlled environment by limiting their movement and controlling the temperature of their surroundings
- 12how can the efficiency of food production be increased?reducing the number of stages in the food chain as at each stage in the food chain, less material and less energy are contained in the biomass of the organisms.
- 13How is biogas (mainly methane) produced?by anaerobic fermentation of a wide range of plant products or waste material containing carbohydrates.
- 14what has caused more waste to be produced? (2)-rapid growth in the human population
-increase in the standard of living - 15what may an increase in the earths temperature cause? (5)-big changes to the earths climate
-a rise in sea level
-may reduce biodiversity
-cause changes in migration patterns
-may result in changes in the distribution of species - 16what is an effect of the destruction if peat bogs?releases carbondioxide
- 17How has the population increase led to an increase of methane in the atmosphere?more people=more food needed
to cope for growing food demands, increases in cattle and rice fields have occurred. These organisms produce methane leading to an increase of methane in the atmosphere - 18How has the production of bio-fuels effected deforestation?increased as space is needed to grow crops like sugar cane from which biofuels, based on ethanol, can be made
- 19in terms of species, what is another effect of deforestation?reduction in biodiversity
- 20what are 2 effects of deforestation on co2 levels?-reduced the rate at which C02 is removed from the atmosphere and 'locked up'
-increased release of C02 because of burning and the activities of microorganisms - 21why is deforestation occurring? 3 reasons-wood for materials such as timber or paper
-make space to rear cattle or grow crops
-space to build developments (cities towns) - 22how have humans reduced the land available for other animals and plants?-building
-quarrying
-farming
-dumping waste - 23give an example of how land may become polluted.toxic chemicals such as pesticides, which may be washed from the land into waterways
- 24give one example of how the air may become polluted(the best example to use)
smoke and gases such as SULPHUR DIOXIDE which contributes towards acid rain - 25give one example of how waste may pollute water supplies-sewage
-fertilizer
- toxic chemicals
Information
- Description
- gcse Biology Flashcards on BIOLOGY 3B, created by Ella Wolf on 12/05/2013.
- Created by
- Ella Wolf
- Views
- 129
- Tags
- Rating