Firstly, an adaptation is any variation that increases one’s biological fitness in a specific environment, that is, the successful interaction between environment and the people living in the environment.
The ability to get use to the new environment with in a very short period of time, and it varies when talking about adaptation of man in life, some people can easily adapt to a new environment while it will take long time for some to adapt.
Here with me, two friends resumed to school at the same time the first guy took a well water and drank while the other took it as too but the second one fell sick because he's body as not yet adapted to the new environment.
This happened to most everyone but I wanna discuss more about this and to know what actually cause it.
So adaptation of man may be biological or cultural in nature. The biological adaptation may take a long time for developmental acclimatization (climatic change) which may cause by genetics factor.
The genetic factor which can be interpreted as hereditary.
Like some one who doesn't have adaptation body, this may be the cause of hereditary, that's more reason some people do fall sick and affected by mosquito in new environment or when ever they drink water /taste water that difference from the former taste.
In another case, due to hereditary factor or cause, without tasting any water nor bit by mosquitoes they will just have to sick.
Mind you, the hereditary I'm talking about is indirectly referring to the strongness, blood.
Why can some people adapt to their surroundings but others can't?
The ability to adapt is part of being human.
The human body readily responds to changing environmental stresses because the new environment temperature will be different from where coming from and our body is highly sensitive, and if you are not the type that the genotype is AA or AS, your cell wouldn't be strong enough to fight the incoming malaria because your body will definitely react to change of environment.
This ability to rapidly adapt to varying environmental conditions will make it possible for us to survive in most regions of the world.
For instance, people whose ancestors have lived in areas that had endemic malaria for thousands of years often inherit some degree of immunity( not susceptible) that is, impossible and difficult to be effected by any serious disease. This generation can easily adapt to any environment or any region they find themselves in the world.
To Adjust to a new environment could be the course of living in comfort zone from childhood, and to change environment later might cause long adaptation or sickness