Which of the following factors helps weeds persist in a field over time? Select one: a. LONG DORMANCY PERIOD OF SEEDS b. PRESENCE OF HERBICIDES c. ALL OF THE ABOVE d. LACK OF COMPETITIVE CROPS

Which of the following factors helps weeds persist in a field over time?

Select one:

a. LONG DORMANCY PERIOD OF SEEDS

b. PRESENCE OF HERBICIDES

c. ALL OF THE ABOVE

d. LACK OF COMPETITIVE CROPS