Complete the text adding suffixes, prefixes or the both to the root words given in the parenthesis:

Agriculture is the soul of our national economy. But our agriculture is still a (a) ____ (gamble) in the hands of nature. Most of the farmers of our country are (b) ____ (literate). Poor farmers cannot buy (c) _____ (science) tools for cultivation. Moreover, the tools are (d) ____ (avail) to buy them. In winter, (e) ____ (irrigate) is also costly.