What is the primary role of the electron transport chain ?

The electron transport chain is primarily used to send protons across the membrane into the intermembrane space.

Explanation:

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.

i am going to guess that it is co2.