Recent research with annual crops such as wheat, sunflower and sorghum in the Great Plains region suggests that, compared to continuous cropping, soil quality, crop productivity and farm profitability are likely to be greater when crops are grown in a field only every second year with the soil keep free of weeds in the non-crop year by repeated cultivation of herbicide application.
Indicate whether the statement is true or false
Question 2
The bulk of gaseous interchange in soils takes place by ________.
A) dissolution in water
B) mass flow
C) respiration
D) partial pressure of N2
E) diffusion
Flynn Effect IQ scores have risen across developed countries in recent decades. Source: Flynn (199
Close-up view of Pluto's mountains, frozen plains and hazes
Median Annual Earnings of Full-Time Workers, by Gender, 1960–2010
J. M. W. Turner, Rain, Steam, and Speed—The Great Western Railway.
SPE densitometry showing an M spike in the gamma region.
Running is a great way to improve cardiorespiratory endurance