Platofam
in this redox reaction, which substance is oxidized and which substance is reduced? c + h2o -> co + h2
a. hydrogen was oxidized and carbon was reduced.
b. carbon was oxidized and hydrogen was reduced.
c. hydrogen was oxidized and carbon remained the same.
d. oxygen was oxidized and hydrogen remained the same.

B.
Carbon was oxidised as its oxidation state increases from 0 (In C) to +2 (In CO).
Hydrogen was reduced as its oxidation state decreases from +1 (In H2O) to 0 (In H2).

Am i right? Hope so HAHAH:)

Answer it is also known as the completion state is untrue of the activation complex;

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.