What are the constituents of phloem?

What are the constituents of solder alloy ? Which property of solder makes it suitable for welding electrical wires ?

What are the various constituents of domestic sewage ? Discuss the effects of sewage discharge on a river .

Mention the constituents of atom.

Microtubules are the constituents of

What is the function of phloem?

One of the constituents of baking powder is sodium hydrogencarbonate, the other constituent is