username5116054
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1. a). Explain the advantage to the farmer of being able to keep the lights on throughout the night and on cloudy days.
b). Why would a farmer not choose to keep the lights on during bright sunny days?
2. Tea grows best at 35oC but many greenhouses keep the temperature at 30oC. Explain why the greenhouse is not heated any higher.
3. Why would eliminating pests allow the farmer to produce more crops?
4. Using your knowledge of Photosynthesis and rate limiting factors, to explain why manipulating the environment allows the farmer to harvest more crops, more often.
5. The crops produced this way cost £22 per tonne to produce which is more expensive than those produced without a greenhouse. Apart from the cost of the land, the workers wages and the greenhouse, identify four things which would cost money.
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Reality Check
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(Original post by Forgotten000)
1. a). Explain the advantage to the farmer of being able to keep the lights on throughout the night and on cloudy days.
b). Why would a farmer not choose to keep the lights on during bright sunny days?
2. Tea grows best at 35oC but many greenhouses keep the temperature at 30oC. Explain why the greenhouse is not heated any higher.
3. Why would eliminating pests allow the farmer to produce more crops?
4. Using your knowledge of Photosynthesis and rate limiting factors, to explain why manipulating the environment allows the farmer to harvest more crops, more often.
5. The crops produced this way cost £22 per tonne to produce which is more expensive than those produced without a greenhouse. Apart from the cost of the land, the workers wages and the greenhouse, identify four things which would cost money.
Rather than typing out your homework and dumping it into a new thread, you need to show how far you've got answering these questions yourself if you want someone to spend their time helping you. Someone whose help is worth it, that is.

Also, a 'please' or simple 'could someone please help me' wouldn't go amiss. Good manners cost nothing.
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username5116054
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(Original post by Reality Check)
Rather than typing out your homework and dumping it into a new thread, you need to show how far you've got answering these questions yourself if you want someone to spend their time helping you. Someone whose help is worth it, that is.

Also, a 'please' or simple 'could someone please help me' wouldn't go amiss. Good manners cost nothing.
Sorry, I was in a big rush
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Reality Check
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(Original post by Forgotten000)
Sorry, I was in a big rush
Thank you. Maybe just something to bear in mind for future posts
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username5116054
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(Original post by Reality Check)
Thank you. Maybe just something to bear in mind for future posts
You're welcome.
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(Original post by Forgotten000)
You're welcome.
No problem. For your question no.2, think about the economics of it with respect to what a graph of 'growth rate against temperature would look like'. The growth rate increases steadily with increasing temperature, but flattens off once you get past 25°C-ish: it's a law of diminishing returns. The extra cost of heating the greenhouse to 35°C rather than 30°C is not offset by enough of an increase in growth (and hence harvestable biomass). So 30°C represents a compromise between a good growth rate and a cost-conscious greenhouse heating.
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(Original post by Reality Check)
No problem. For your question no.2, think about the economics of it with respect to what a graph of 'growth rate against temperature would look like'. The growth rate increases steadily with increasing temperature, but flattens off once you get past 25°C-ish: it's a law of diminishing returns. The extra cost of heating the greenhouse to 35°C rather than 30°C is not offset by enough of an increase in growth (and hence harvestable biomass). So 30°C represents a compromise between a good growth rate and a cost-conscious greenhouse heating.
1a) As more oxygen is produced, the rate of photosynthesis increases and so does the light intensity
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