Question

some environmental problems
i global warming
ii depletion of ozone
iii decreased ph of lakes
iv leaching of heavy metals
v decreased population of aquatic organisms
which of the environmental problems listed above can be caused by acid deposition?

i and iii
ii, iii, and iv
iii, iv, and v
iv and v only

Explanation:

1. Analyze each option:

• Global warming (I) is mainly due to greenhouse gases, not acid deposition.
• Ozone depletion (II) is caused by CFCs, not acid deposition.
• Acid deposition (like acid rain) lowers lake pH (III), leaches heavy metals from soil/rocks (IV), and harms aquatic organisms (V) by changing water chemistry. So III, IV, V are caused by acid deposition.

Answer:

III, IV, and V (the option "III, IV, and V")