d
Treated sewage is less damaging to the environment than untreated sewage.
"Natural ecosystems provide an array of basic processes that affect and support humans."
Which statement does not support this quotation?
a
Lichens and mosses living on rocks help to break the rocks down, forming soil.
b
Bacterial decay helps recycle matter.
c
Trees add to the amount of atmospheric oxygen.
d
Treated sewage is less damaging to the environment than untreated sewage.
1 answer
1 answer