8. Which of the following is a characteristic of no-till farming?
A. It causes a loss of organic matter and degradation of soil aggregates
B. It optimizes conditions for seed germination
C. It allows seeds to be planted without tillage which conserves
nutrients
D. It manipulates the soil by physical, chemical or biological causes
which provides optimum growth and benefits

Consider a 1.2 meter high and 2 meter wide glass window whose thickness is 6 mm and thermal conductivity is 0.78 w/m °c. the room temperature is maintained at 24 °c, while the outdoor temperature is -5 °c. the convective heat transfer coefficients on the inner and outer surfaces of the window are 10 w/m2 °c and 25 w/m2 °c respectively. (a) draw the thermal resistance network, etermine the steady rate of heat transfer t e glass window (c) determine the temperature of the inner surface of the window