u/PensionMany3658

So Myenas had nested behind our AC exhaust in April and we let it because it wasn't hot back then and they had already laid before we caught a whole glimpse. The chicks matured and flew away, and we cleaned the mess. But they restarted nesting now again, and are fornicating atop the units too!? Seems like they really liked the place.

We keep destroying the nest, cleaning it and they rebuild it. We want to ensure they abandon it entirely before any eggs are laid again because that would be hard to deal with then. And it's become unbearable now without the AC running. Dry twigs are obviously a major fire hazard. Is there a way to get rid of them without any harm? Someone said a plastic net covering the whole unit, but wouldn't that be a fire hazard too?

So A is clearly the only without a plane of symmetry. But my teacher says B is the right answer here, because cis-(1,2)-dimethylcyclohexanes are enantiomeric despite their achirality. But I don't understand the reason why? I drew out all the structures and B clearly had a plane of symmetry.

Correct me if I'm wrong, but a is the only option here that has no plane of symmetry? While the others do. Should that not disqualify them all from being 'enantiopure'? I'm being told that (1,2)-dimethylcyclohexanes have a special case of cis compounds being enantiomeric while trans being not. But I don't understand how? I drew all the structures and a is the only option without a plane of symmetry.

For me, it's no contest. It'd be a great injustice for me if she didn't win for this. Although, I admit I haven't liked her last two performances as much as most of my cinephiles friends.

I'm just halfway through the anime, and omg! I couldn't even conceive of such incredible sound in animation. Every crackle of electricity, whirring of the monitor, every digitised voice is so so well done and adds to the weird nature of the anime so much. Not to mention, the iconic soundtrack. This definitely has the best sound design in any animation I've seen so far.

Spirocompounds are famous for their non-traditional chirality, when there's two mutually perpendicular rings, and the vertically opposite constituents are different like in picture 1.

But what if there are three/multiple rings instead like the dispirodecane in picture 2. Would it even matter if the constituents were all different, as in a≠b≠c≠d? I suppose no, because you would get a plane of symmetry either way from the vertical direction? Would I have to worry about the substituents on the planar rings to identify optical activity then?