En termin: One academic term, as in "the winter semester/term". Fordonsprogrammet: A vocational program in upper secondary school/high school with focus on vehicles ('fordon'). Plugghäst: Someone who studies a lot (literally "study horse"). En trea: A three-room apartment, but it might also, depending on the context, mean "3 points", e.g. "jag fick en trea" ("I scored a 3"). Ämnena: The subjects. En vad: "A calf" (the back side of the lower part of the leg), although 'vad' is a homonym, and perhaps you meant "*ett* vad" (it's hard to imagine many situations where someone would use "en vad" with respect to human anatomy), which would then mean "a bet". 'Vad' also means 'what', and in that case "en vad" would be a question, in response to some statement, meaning "a what?" Stämde: This is also a homonym which, depending on the context, might mean 'sued', "it was correct", or 'tuned' (as in "tuned an instrument"). Spön: 'Rods'.

"... at its finest" is quite commonly used. It's often used sarcastically though, e.g. during a BSOD (basically when the Windows operating system makes a booboo): "Windows at its finest".

*Natural selection* is nature's way of *crassly extinguishing various species*, although mankind also contributes to the *decreasing amount of species* by hunting and poaching. I wouldn't use the word "although" in that sentence though, since mankind is just another variable which affects the evolution of species - and thus their and our chance of survival - in this zero-sum game-like process of life. Maybe: "Natural selection is nature's way of crassly extinguishing various species, and mankind is arguably one of the main offenders considering our hunting and poaching of other animals", but perhaps I didn't interpret your question and capture the correct emphasis.