explained the reason of scarcity and the way to solve it ?

scarcity just means that you don't have an unlimited amount of something.

Scarcity is due to limited availability of resources and the high demand for them to fulfill unlimited wants.
Scarcity can be overcome to some extend by investing in renewable resources and implementing a sustainable development strategy.

Nearly Unlimited wants and not enough of everything to satisfy them.

The reason is obvious. One factor for good A cannot be used to apply for good B without any adjustment cost.It's called specialization which is the origin of scarcity.

Scarcity = rarity, uncommonness. A great example is with our current president....for some reason he'd rather have 100% of Americans on Welfare than to have jobs....so he closes businesses/factories/corporations and moves them to 3rd World Countries.....so Americans have NO jobs.
Once Trump is President......he will bring back ALL of 'those' jobs, put every able bodied American to work, we will be able to buy a home and have a great future once again.
So, the scarcity.....rarity or uncommonness....is Obama send ALL American jobs else where.

All goods on earth are scarce, their supply is limited, if their is high demand for a good the only way to solve this (avoid scarcity) is a relatively unhampered market with a functioning price system. Higher prices will not only solve scarcity , but will help increase the quantity supplied and the supply of any given good. This , in the medium to long term , will lower prices. Oil is a good example of this.

We have an abundance of almost everything. Its just that infrastructure is lacking meaning insufficient production. You can build farms with the soul purpose of feeding the impoverished, but these can't work without the rest of an economy. You can have extra farms but without consumers earnings from production in their own economy they won't have the means of buying from the abundance. So what is needed is group effort toward developing poor economies. Did you know there are about 40,000 items in a single super markets so what yfood scarcity? We can put photovoltaic panels on cars and home. So what energy scarcity? We have millions of unused homes? So what shelter scarcit? We can out education online and sell devices for as low as 20$. So why is there the uneducated? Please check out The Venus Project for a new idea of economies and societies.

Define your scarcity, is it demand, or supply? Your question is too vague, there is always a scarcity, its the reason for investment.

The reason for scarcity under the present economic system is that production takes place for the sake of profit, so if a company cannot make a profit, they won't produce the good or service in question. Plus massive resources are devoted to unproductive things like money, banks, insurance, credit cards, armies.

Scarcity can be solved by production for use.

The reason are poor distribution of resources, personal perspective on resources and a rapid increase in demand/rapid decrease in supply.
Solutions are construction projects and scheme, or find a way to make the price set at equilibrium so that both parties can get what they want. One example I can think of is change of product design and packaging to attract consumers and eventually increase the quantity demanded to the equilibrium so both parties are willing to exchange at a given time and given price.