Get premium membership and access revision papers with marking schemes, video lessons and live classes.

Processing. Please wait.

Chemical weathering caused by living organisms

Answer Text:
Chemical weathering caused by living organisms
a) Plants rot on rock in the presence of moisture and produce organic acid
b) It reacts with some minerals within the rock causing decay.
c) Animals excrete on rocks and release chemical substances which react with some minerals in rocks causing them to break up.
d) Chemical substances released from the industries to rivers cause the water to act on rocks over which it flows.
e) Gases such as #CO_2# emitted from motor vehicles and industries are absorbed by rain and acids such as carbonic or sulphurous which react
with minerals causing rock to decay.