Some types of bacteria are extremely important in changing atmospheric nitrogen into a form of ____.
A)oxygen that is released into the atmosphere
B)carbon dioxide that speeds decomposition
C)carbon dioxide that aids in plant growth
D)soil nitrogen suitable for use by plants
E)nitroglycerine for uptake by plant roots
Question 2
The amalgamation of Pangaea may have played an important role in the Permian extinction because the shallow marine environment was greatly reduced.
Indicate whether the statement is true or false