Question

name the organisation according to whose declarartion the world population has now reached 7 billion mark in 2011​

Answer 1

Answer:

the United Nations

In 1950, five years after the founding of the United Nations, world population was estimated at around 2.6 billion people. It reached 5 billion in 1987and 6 billion in 1999. In October 2011, the global population was estimated to be 7 billion. A global movement "7 Billion Actions" was launched to mark this milestone

Answer 2

Answer:

UNO United Nations organization