Why do developed countries have a better medical facilities

Developed countries have better medical facilities because they have more money and are able to afford equipment which is often very expensive. Due to having more money, their medical facilities can be equipped more expensively. While this doesn't always mean it is a better facility, it often is the case. 

So in a nutshell, because developed countries have more money, they are also able to provide better healthcare and better medical care in their medical facilities. 

Ba population changes in response to a change in environment

Sequoia national park  /  inyo national forest, california, u.s. mount whitney is the tallest mountain in california, as well as the highest summit in the contiguous united states and thesierra nevada—with an elevation of 14,505 feet (4,421 m).