on page 158,foundation verbal.
The difference between a weed and a garden plant depends entirely on the opinion of the person who owns the land.thus ,it is impossible to develop a flawless garden weed killer that kills all types of weeds and leaves all types of garden plants unharmed.the vetex company s attempt to develop a perfect garden weed killer will fail.
i have problem in taken maths assertive property like what i take A=B,B=C,C=A I HAVE PROBLEM IN FINDING CONCLUSION AND WHAT TO TAKE A,B AND C FROM PARAGRAPH