The best and most correct answer provided by the question is HBr, the most powerful and dangerous acid. I hope my answer has come to your help. hope this helps and have a nice day!
They would be the primary producers. otherwise known as an autotroph. (makes their own food)
Plants and algae are the two groups of organisms
It should be "population" but I'm not 100% sure. I hope this helps a little bit.
