What conclusion can you make about how the carbon dioxide level has changed over time? o the level has not changed o the level of co, has declined. o the level of co, has risen. o the level has reached its maximum.

what's the question ?

answer: d. load

a river's load refers to the natural phenomena in which the sediments, rocks   stones, boulders and other deposits are removed and picked from the bottom bed of the river due to the abrasion resulted by the high speed water current.