Question

which substance is the starter of dark reaction?​

Answer 1

Answer:

coal

Explanation:

because it is dark in color

Answer 2

Explanation:

The cycle begins when carbon dioxide (CO2) from the atmosphere enters plant cells. An enzyme called rubisco catalyzes the first reaction, where CO2 binds to a specific 5-carbon molecule called ribulose-1,5-bisphosphate (RuBP). This reaction creates a 6-carbon molecule which then splits into two 3-carbon molecules.