Answer:B: they lower the activation energy of reactions
Explanation: just took the test
Answer:
Its number 4 , After billions of years, cyanobacteria turns into iron; the iron beds are remnants from cyanobacteria. its 7th grade science.
Explanation:
what is the question you basicly just gave us a paragraph to comment on
the thinking brain
cus it sound right
Both A and C is the right
