Q.2. Choose and underline the appropriate word.

a) Presence of micro-organisms such as bacteria, algae, fungi and protozoa determine the Physical/Chemical/Biological properties of sewage.

b) Aerobic decomposition occurs in the sewage water in presence of dissolved Oxygen/Nitrogen/Potassium/Carbon.

c) Which one is not renewable energy? – Biogas/Natural gas/Solar energy/Wind energy.

d) First large solar power plant of Bangladesh is established in- Kolapara of Patuakhali/Rampal of Bagerhat/Teknaf of Cox’s Bazar/Goalpara of Khulna. 

e) Karnaphuli Hydro-electric power station is situated in Chittagong/Rangamati/Sylhet/Khulna district of Bangladesh.

f) United Nations Environment Programme (UNEP) was funded in 1971/1972/1975/1976. 

g) Bangladesh joined in IUCN as a state member in 1971/1972/1975/1976.