Correct answer
B. None of the above
Explanation
The correct answer is None of the above.
The enzyme responsible for biological nitrogen fixation is________?
A cross of hybrid with one of its recessive parent is termed________?
When two genes are situated very close together in a chromosome________?
Proportion of school aged children who don’t complete a particular school cycle?
Sustainable technologies to improve soil fertility and physical condition:
________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.