I think it is difficult to control pig weed include; The number of inches it grows daily; its thick, woody stem and also the number of seeds it produces.
The pigweeds are an annual plant that germinates by release of their seeds starting in late winter until summer.
Answer:
develop and use new abiotics
Some sort of liquid. if you add thinks like flour, it will get thicker. so water or milk
Your answer is C
Hope this helps :)