<span>River valleys
this was ask a week ago but I hope I helped someone :')</span>
Answer:
c. oxygen
Explanation:
Rusting occurs when iron reacts with oxygen in the presence of water. Rusting is an oxidation reaction and is characterized by a reddish brown color.
Hope that helps. :)
Sea or the Mediterranean Sea
Brazil had made decisions in terms of environmental progress
that will be of help with the environment and natural resources that will be of
gain and advantage to them, though these decisions had led them an population
change in which became overpopulated as their country is intertwined with the
forest and agriculture, making 85% of it to be the population of the brazil.
