Five (S) True or False questions mark each). Using the figure below, answer the

Question

Five (S) True or False questions mark each). Using the figure below, answer the following TRUE or FALSE statements Rplant GPP Emissions Fdisturb Rhet Plants Littertall Animals Soil organic matter and miorobes Fleach NPP = GPP-Rplant NEP GPP- (Rplant+ Rhet) Rplaut and Rhet are potentially negative feedbacks to greenhouse warming 2. This figure has a missing arrow describing the photosynthetic assimilation of CO2 in the root syste respiration is a source of atmospheric carbon 2 s1 it is likely that PAR would be close to 0 W/m2 3. Photosynthetically active plants are a sink for atmospheric carbon and 4. If GPP was measuring 4.8 mol m 2 s 1 and R was measuring 6.2 mol m. . Herbivory can result in the loss of green leaf material and live root tissue.

Explanation / Answer

SOLUTION:-1) A negative feedback might be represented by cloud cover - if as the planet warms cumulus clouds increase in extent, then more sunlight would be reflected and Earth wouldn't warm quite as much. so plant will act as a negative feedback.

2) co2 assimilation cannot occur inlight. so the missing arrow which indicates that photosynthesis assimilation occur in root system is correct

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