Question

____ bacteria carry out the conversion of gaseous nitrogen to a biologically useful form of nitrogen.

My answer is "nitrogen-fixing"
(This is fill in the blank)

Answer 1

That seems reasonable. See for example:

http://www.britannica.com/EBchecked/topic/967311/nitrogen-fixing-bacteria

Answer 2

Thanks Damon :)

Answer 3

You are welcome :)

Answer 4

Thank you this is part of my Unit test and I always forget this one!