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The problem of respiration is a matter of difficulty in the soil which is saline, water logged and rich in putrefying organic bodies-hence poor in oxygen. This problem is solved in many plants like Rhizophora sp. by pneumatophores...
Again Wikipedia says
These specialized aerial roots enable plants to breathe air in habitats that have waterlogged soil... The surface of these roots are covered with lenticels which take up air into spongy tissue which in turn uses osmotic pathways to spread oxygen throughout the plant as needed.
Gaseous exchange generally occurs through stomata and does not involve the roots. Why then does the nature of soil affects the respiration in halophytes?
It is a speed formula
2.Assume the following information represents the National Income Model of a hypothetical economy.
Y = C + I + G,C = a + b(Y – T),T = d + tY, I = I0,G = G0
Where a > 0; 0 < b < 1,d > 0; 0 < t < 1,T = Taxes, I = Investment ,G = Government Expenditure
Explain the economic interpretation of the parameters a,b,d and t.
Find the expression of equilibrium income, consumption and taxes
Y = C + I0 + G0 ,C = α + β Yd Where: Yd = Y – T, Y = Income, T = Taxes
Government spending and investment are exogenously determined at G and I respectively. Assuming this model represent a three sectors economy, determine Investment multiplier, Government spending multiplier and Tax multiplier. If there is an increase in marginal propensity to consumer, how will this affect the national income?
Graphically show and explain how carpooling may eliminate the shortage.
Graphically show and explain how building more freeways may eliminate the shortage.
CO2 (g) + C(graphite) -----> 2CO (g)
If 13.5 g of carbon monoxide is placed in a 2.50-L graphite container and heated to 850.°C, what is the mass of carbon dioxide at equilibrium?