¿Qué es la contaminación? Al Proceso que purifica el agua.
B) Modificación en la composición del suelo.
C) Alteración en la composición del medio
Dl Proceso que mejora el ambiente​

The answer is letter d

This is what i found on google “eightin 1997, the mccaughey septuplets were born in carlisle, iowa. multiple births of as many as eight babies have been born alive, the first set on record to the chukwu family in texas in 1998; one died and seven survived. in 2009, a second set, the suleman octuplets, were born in bellflower, california.” i was surprised about this . i don’t want to have that many babies .