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what is a gas exchange surface
examples of gas exchange surfaces
adaptations of the spongy mesophyll for gas exchange from most to least important (1)
(2)
(3)
what happens to the stomata when its light
what happened to the stomata when its dark
define turgid
define flaccid
describe the movement of gases in the day
describe the movement of gases at night
what happens twice a day
investigation aim
method step 1
method step 2
method step 3
method step 4
colour of tube a solution
colour of tube b solution
colour of tube c solution
colour of tube d solution
hydrogen carbonate indicator in high co2
hydrogen carbonate indicator in normal co2
hydrogen carbonate indicator in low co2
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