Until the 1950s, psychologists were found almost exclusively in

where are the answers

explanation:

be cause we need them

the answer is actually b.   as habitats are destroyed, animals and plants may become extinct.   , according to edge nuity

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.