I am pretty sure it is a. But the Indus valley writing was not discovered yet. They are still working on translating it
Luckily, I had remembered this type of question before, next time please states how and what you want the answer to be like.
33° North
44° East
Answer:
Hello There!!
Explanation:
An ecosystem is that it is a community or group of living organisms that live in and interact with each other in a specific environment.
hope this helps,have a great day!!
~Pinky~