cosystem?","back":"The sun.","points":1},{"id":"0a89633a-55c8-43e3-8a1c-85a5644b1909","cardType":"basic","front":"What do producers make from atmospheric or aquatic carbon dioxide?","back":"Organic compounds, such as glucose.","points":1},{"id":"036da516-9f4b-44c5-8d05-335a0c27f7f3","cardType":"cloze","front":"Biomass represents the [ ] stored within an organism.","back":"Biomass represents the chemical energy stored within an organism.","points":null},{"id":"41218e48-d323-4ebc-a162-40128bd8927f","cardType":"basic","front":"Why is fresh mass unreliable for estimating biomass energy content?","back":"Water content varies between biological samples.","points":2},{"id":"62c24745-3553-43db-975f-4c377fef032c","cardType":"cloze","front":"Dry mass is found by oven-drying at about [ ] to remove water without burning tissue.","back":"Dry mass is found by oven-drying at about $100\\,^{\\circ}\\text{C}$ to remove water without burning tissue.","points":null},{"id":"3f355d4b-1b8a-446f-a88d-374f1a2fc78d","cardType":"basic","front":"What does constant mass after oven-drying show?","back":"All water has been driven off.","points":1},{"id":"6fa3db99-8b5f-40ba-ad12-313b4c77225a","cardType":"basic","front":"In calorimetry, what measurement is used to calculate biomass energy released?","back":"The water’s temperature rise.","points":1},{"id":"f22a881a-b2e3-4edf-bd60-413b97c998e3","cardType":"cloze","front":"Gross primary production (GPP) is the [ ] in plant biomass over a given area/time.","back":"Gross primary production (GPP) is the total chemical energy store in plant biomass over a given area/time.","points":null},{"id":"f18efe7f-8031-4af6-9aae-753086cc83a1","cardType":"cloze","front":"Plant respiratory losses ($R$) are energy lost to the environment as [ ] during respiration.","back":"Plant respiratory losses ($R$) are energy lost to the environment as heat during respiration.","points":null},{"id":"78920bfd-d40e-4765-b5d9-78eb611d8aeb","cardType":"cloze","front":"Net primary production is calculated as [ ].","back":"Net primary production is calculated as $NPP = GPP - R$.","points":null},{"id":"b33f57a2-0534-4bbf-956e-96746aaa07f1","cardType":"basic","front":"Which plant production term is energy available to the next trophic level?","back":"NPP.","points":1},{"id":"e803b6a3-f64c-4fde-86e8-f3c8434d3b9e","cardType":"basic","front":"If $GPP=24\\,500$ and $R=11\\,200\\,\\text{kJ m}^{-2}\\text{ year}^{-1}$, what is $NPP$?","back":"$13\\,300\\,\\text{kJ m}^{-2}\\text{ year}^{-1}$.","points":2},{"id":"a62471f7-c72b-47a5-8591-dd0b1499fb79","cardType":"basic","front":"What does consumer net production ($N$) become in an animal?","back":"New animal biomass.","points":1},{"id":"cbea8abe-e7ac-4946-aca1-895234673904","cardType":"cloze","front":"Consumer net production is calculated as [ ].","back":"Consumer net production is calculated as $N = I - (F + R)$.","points":null},{"id":"ef37362b-2f7a-4f4d-b9d7-eec52d479071","cardType":"basic","front":"Which loss term in $N = I - (F + R)$ is faeces and urine?","back":"$F$.","points":1},{"id":"73ccdaf1-8a90-4ed8-b24c-f2fbd9ebd7d5","cardType":"basic","front":"A cow has $I=140\\,000$, $F=65\\,000$, and $R=55\\,000\\,\\text{kJ}$. What is $N$?","back":"$20\\,000\\,\\text{kJ}$.","points":2},{"id":"436f2362-bafe-442e-98db-52accab80761","cardType":"cloze","front":"A standard productivity unit is [ ].","back":"A standard productivity unit is $\\text{kJ ha}^{-1}\\text{ year}^{-1}$

Energy and ecosystems (A-level only) Flashcards

Energy and ecosystems (A-level only) Flashcards

Energy and ecosystems (A-level only) Flashcards

Energy and ecosystems (A-level only) Flashcards