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This looks more like a holding facility, like where the animals stay when they're brought in for the night so their outside enclosure can be cleaned. It's probably painted for enrichment so they're not just staring at blank walls. I wouldn't be sad for them - it's actually pretty thoughtful. (:

It has absolutely nothing to do with how humans perceive them. Honestly, if you try to "save" them, you're probably doing far more harm than good. Don't believe everything you read on the internet! (Not even this - do some research, check out pages on what to do if you find baby wild animals.)

We have iClickers at UCF. They're remotes with buttons for A, B, C, D, and E. You register your remote's numerical code with the specific class online so that way they know whose remote belings to whom. The professor will typically post a question in the powerpoint, turn on the wireless signal receiver, and all the students will vote. The receiver stores all the data for which remote chose which answer and whatnot based on their unique signal, and the professor will indicate the correct answer after everyone has voted, so the receiver marks all those votes as correct. That's how they're used for participation, and just clicking any button will register and that way they can be used for attendance. I hope this didn't make it more confusing, I tried to explain it as best I could.

Organic chemistry and microbiology are like this! Not quite so many colors, but there's definitely colorful solutions in beakers and test tubes. (:

Their vomit defense is so effective. They're throwing up half-digested, rotting meat. The smell can clear a room.

Spoiler alert:
The last one can't happen. Harry is only the Chosen One because Voldemort CHOSE him. When Voldemort heard the prophecy from Snape, it could have meant Neville or Harry. He chose Harry because of their similarities (Muggle-born mother), therefore marking them as equals and giving Harry the power to destroy him 16 years later. If Voldemort had never killed Lily and James, Harry would not be the Chosen One. He'd totally still get into trouble with Ron and Hermione, though, so that part's accurate.

The fish eats a tiny shrimp, which produces the bioluminescence so that the fish is now a glowstick for other predators. It's like the shrimp is saying, "If I have to die, then I'm taking you with me!" The fish, not wanting to be eaten, spits out the little shrimp. You can see the little speck get sucked in, then fall down after it hits the glass.

But... why not just go to the right, and avoid the maze entirely?