The domestic sewage in large cities(a) Has a high BOD as it contains both aerobic and bacteria(b) Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs).(c) When treated in STPs does not really require the creation step as the sewage contains adequate oxygen.(d) Has very high amounts of suspended solids and dissolved salts

Name the plants whose leaves, as well as roots, are useful?

What is Symbiotic nutrition(commensalism)?

How do plants get nutrients?

The products of respiration isa. Waterb. Carbon dioxidec. Energyd. All of the above