Why do newly discovered species live in remote, hard to reach places?

This is because these species would not have been studied much or documented in the past because of their inaccessibility. Many species may be unknown to science, but that does not mean they are unknown to humans. Traditional knowledge within rural areas may have knowledge of these species, but the remoteness of these areas means that universities and research centres may not have sent scientists into these areas. 

Biochemistry, it deals with the chemical constitution, the breakdown and the synthesis of plant and animal products.

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey