Vertebrates. they are all chordates, which mean they have a notochord somewhere in their body.
I think it is A
Hope my answer help you?!
Tell me of wrong or no?
Deforestation. The animals forest that they once lived in are bein cut down.
From my knowledge I mostly think its Thalilacea
I think this because even though it can be Appendicularia too, Thalilacea has BOTH a tail and notochord in the adult stage
The writing materials,the envelopes and the stamps are all made of paper and this led to a great waste as the papers have to be disposed after use. This is not the case with electronic mails. Electronic mails do not need paper at all and it has drastically reduce the amount of papers that is used in writing letters.
I hope this helps :)