ecology wrong questions

• How would you estimate the percentage covered with green alga in one quadrant?

  estimate number of squares covered. divide by total number of squares and multiply by 100
• what are the local effects of burning rainforests for food production?

  increases in food production in short term. but plants destroyed so nutrients not recycled
• why is it difficult to tell which area has most amount of overfishing?


  large amount of area not measured so difficult to tell proportion of overfishing
• why is it important to maintain fish stocks


  avoid extinction
• why is ammonia added to fermenter?


  nitrogen needed to make protein
• why might some people disagree with mycroprotein?

  different taste. unnatural
• why is there very small energy transfer between light from sun and plant

  not all wavelengths of light absorbed. some light reflected
• Why does importing tomatoes have more environmental impact than selling tomatoes?

  greater transport. higher carbon footprint
• Why did the biogas not burn after day 2

  Has oxygen. So aerobic respiration happens. Produces carbon dioxide which does not burn.
• Why would it be be better to use sheep manure in a biogas generator than sheep manure?


  Sheep manure produce higher volume of gas. Biogas has higher percentage of methane
• Why is it important to conserve biodiversity?

  So not future implications
• What additional data is needed in the tape to calculate which method of food production is most damaging to the environment?


  total mass of each food produced
• Why does raising sheep have a higher global warming impact than chickens.

  Greater carbon dioxide output. Because take longer to produce sheep meat.
• What is an advantage of a farmer putting coriander in animal’s food?

  Less food converted to methane so more growth
• Why would it not be profitable to collect biogas from the generator until after 20 days?

  Higher amounts of methane
• Why did the rate of biogas production slow down at the end of the investigation?


  Organic material used up
• What conclusion can you make from the data?

  Region b more affected by temperature. Because different types of organisms on leaves
• why is compost heap more useful to chef?


  improve soil retention. Not have to spend money on fertilisers
• Why does needing less oxygen help the animal to conserve water?


  Breathing rate less. Less water lost from respiration
• Why are there more unbanded snails than banded snails in sand dunes?

  Banded snails camouflage easier. Banded snails camouflage easier. Fewer banded snails eaten by birds. More banded snails to breed and survive
• Why does 5he reading on the oxygen meter only show 9


  Lower resolution
• What is better way of saying growth

  Active synthesising substances
• Why did the diatoms decrease in Autmn?


  End of life span
• What causes the number of diatoms to increase in late summer?


  increase in phosphates and nitrates. Due to decay of fish