Yes.
seeds
Farmers plant seeds.
Congress grass
Yes, mowing weeds can spread their seeds to other areas of the yard, leading to the growth of new weeds in those locations.
Human intervention, water flow, wildlife dispersal and wind currents are ways that seeds of weeds spread.
To properly dispose of weeds and prevent them from spreading, you can pull them out by hand, making sure to remove the roots. Place the weeds in a sealed bag or container to prevent seeds from spreading. You can also compost them if the compost reaches high temperatures to kill the seeds. Avoid throwing weeds in the regular trash or compost if they are still viable.
Mulching grass can help prevent the spread of weeds by blocking sunlight and preventing weed seeds from germinating.
Mulching can help prevent weed growth in a garden by blocking sunlight and suppressing weed seeds. However, if the mulch is not applied properly or if it contains weed seeds, it can potentially spread weeds in the garden.
Weeds are persistent because sometimes when you pluck up a weed you don't get the whole plant. Weeds are so hardy that if some of the roots are still there it can grow back. Some weeds also have seeds that can fly large distances on the wind.
No, since the seeds are too small for a sheep to find and eat. Sheep cleanse their pastures of weeds, which eliminates the weeds' ability to spread and establish themselves and thus get "weeded out" by the natural grazing behaviour of the sheep.
water + earth = swamp swamp + energy = life water + life = weeds swamp + weeds = moss earth + moss = grass
No. Even with a 2mm sieved soil, you'd still get some weeds growing because the seeds are actually smaller than 2mm. You would probably reduce the global amount and biodiversity of the weeds, though.