If they are your friend (or on Quora) and you're curious, they'll probably be happy to explain, if you ask politely. The fact that someone has a disability card that says they are blind and yet they don't have a white cane and they either do or don't wear glasses does not mean that they have forged the disability card.
In surveys conducted in Illinois and Missouri, producers and agricultural retailers listed waterhemp as one of the most common and troublesome weeds encountered in soybean production. Waterhemp is a prolific seed producer, capable of producing about one-and-a-half times more seed than most other pigweed species.
Hydrostop Sealer is a clear, water-based sprayable liquid which activates a water-repellent effect on the surfaces of concrete, brick, mortar and masonry.