It could be quite innocently describing the biology of jellyfish.
My thought exactly! Or any number of sponges, vermin, invertebrates, single-cell-organisms and viruses.
Why is it so mean?
How many brains should they suppose to have?
When you very angry to very stupid person.
This one only seems to be correct if you capitalise “Mereka” and/or use a full stop.
Every sentence starts with a capital letter, and so with after full stop.
Not sure if we should even have this kind of sentence in duolingo
You shouldn't attack me like that