Which of the followng practices inhibits the productivity of pastures? 

Which of the following factors does not influence the distribution of pastures? 

One of the symptoms of Contagious Bovine Pleuro-pneumonia is 

Which of the following farage crops helps to converse soil moisture?

The diagram below shows stages in the life cycle of a parasite. Study it and answer question 20. 

Which of the following organisms serves as host to the parasite at the stage labelled I and II respectively ?