â What/How do you mean?â = â Meaning? â [=what exactly do you mean when you say that?] âHe can be a little difficult.â â I know what you mean.â [=I agree]
Answer Wiki. It turns out that sulfur hexafluoride, SF6, is the most potent greenhouse gas ever measured. Greenhouse gas potency is measured with an unit called the GWP or global warming potential, and it takes in account the molecule's ability to absorb infrared radiation and survival in the atmosphere. SF6 is an octahedral molecule, with six S-F bonds, each capable of absorbing infrared radiation very well.
Giant hogweed (Heracleum mantegazzianum) has the worst reputation for it, but âfriendlyâ plants such as carrots, celery and limes can all blister the skin in the wrong conditions. One of the worst untouchable species, whatever the weather, earns the dubious honour of being the worldâs most dangerous tree.Thereâs a difference between poisonous and harmful. You can say whatâs the most poisonous plant fairly easily â theoretically looking at the toxins in it and what they can do,â says John Robertson.