On the other hand, we have external one which we cannot less control, is an exogenous variable. What are they? External variables is considered in this double structure of vulnerability as exposure. So, exposure to what, some shock or some events like it depends on what kind of shocks, is it natural phenomena or some epidemics or not merely a kind of special exposure but how defenseless like I am for that one.

So, double structure of vulnerability, two components; one is the exposure one and this exposure one according to Bohle that we can understand this exposure context from 3 different dimensions. One is human ecological perspective, population dynamics, capacity to manage the environment, population growth, and how human ecology is looking at population growth and the capacity to manage the environment. And also the entitlement theory, the capacity theory and that the people have for control and to get to secure the means of their economic needs. And also the political-economic approach like the question of inequalities or disparities of assets, the power structures.

Well to understand people's coping, we can also borrow the ideas from crisis and conflict kind of studies, who have the access to assets and resources and how it matter of conflict between individuals and groups or maybe sometimes action theory approaches, how people act, react frequently as a result of social-economic and governmental constraints and model access to assets like a mitigation of vulnerability through access.

There is another more prominent and very popular conceptual idea of vulnerability is the sustainable livelihood framework. It is not really on vulnerability, but they are one of the pioneering approaches that define and quote the vulnerability and which was now very regularly used in disaster risk and other risk management. So, this idea came originally developed by famous person Robert Chambers and Conway in 1992.

Their focus is like one poor people and their livelihood. When they are talking about vulnerability, it did not came from, did not come from the disaster perspective, but they are talking defining poor people and their livelihood in case of development and people at the center of their model. People should be put into the center of the development and vulnerability is considered as a kind of shock or a kind of trend or seasonality that influence the capacity of the people to maintain their livelihood.

So, vulnerability is directly connected with people's livelihood and their capacity to manage their livelihood basically. And two major components here, one is the sustainability, and livelihood. So, a livelihood becomes sustainable in different conditions or a livelihood should be considered as sustainable. When it is resilient to face any kind of external shocks like natural disasters or epidemics that they can absorb this shock, they can bounce back, they will not finish.

So, according to this model, people are actually operating, you know they are working in a context of vulnerability. What is the context of vulnerability? So, vulnerability context is defined with 3 characteristics that people are at vulnerable because shock, trends, and seasonality.

So what are the shocks? One is the natural shocks like flood, drought, and cyclone. And health shocks like epidemic like cholera or even dengue let us say, or economic shocks like some financial recessions or maybe death in the family for a household or maybe violence like civil war in case of Syria or in many other countries in case of Sri Lanka when they were in civil war or in case of Bosnia.

Another one is the seasonality and seasonal shift in price like the price of the crops of the food for the agricultural labor or the productions because of production is low or high, because of climate change maybe the production is not so high this year. Or maybe the food availability or employment opportunity, how many days I have employment opportunity in a particular season.