Answer:
hopefully this helps i have a summarizing thing that does it for me,
The world’s population could swell to 10.9 billion by the end of the century, a new United Nations analysis found, raising concerns that adding more than 3 billion people to the planet could further deplete natural resources and accelerate global warming. The increase, up from the current count of 7.7 billion people, is expected despite a continued decline in the global fertility rate, which has fallen from 3.2 births per woman in 1990 to 2.5 births per woman this year. Experts say the global fertility rate will continue to decline, but the world’s overall population will still rise, hitting 9.7 billion by 2050. The new report predicts slower population growth than the U.N.’s last assessment, released in 2017. That estimate projected that the world population would reach a staggering 11.2 billion by the end of the century. The revised figures reflect the downward trend in the global fertility rate, which means the populations of more countries are shrinking.The fastest growth, according to the new report, is most likely to occur in sub-Saharan Africa, which is expected to double its population in the next 30 years.
Explanation:
Answer:
The researcher is most likely studying C. absolute threshold.
Explanation:
Threshold refers a specific intensity which needs to be exceeded in order to <em>obtain a certain reaction</em>. For example, pain threshold.
The absolute threshold refers to the smallest change in a <em>stimulus' intensity</em> in order to be <em>identified by the senses</em>, such as hearing, vision, etc.
In this case, a <em>change in tones requires a low intensity</em>, meaning an almost subtle change can be easily identified by the human sense. It is most likely the researcher is studying your absolute threshold.
Oxygen
.........::::::::::::
I would say to, protect people because the people in the society can’t call military forces or something like that to protect themselves but the government can.
Sorry if I’m wrong.
