Well, to put it plainly, it is very difficult for a society to develop a unique culture and role in global politics and economics when they have to worry about drinking clean water more than anything else.
Answers – Distribution; Abundance
Ecologists are primarily concerned with the distribution and
the abundance of living things (people, plants and animals) in the environment,
<span>and the relationships between these
living things and their environment. They are concerned with the
ecosystem as a whole.</span>
The proper format is

No one really "said" it; it is the equation that represents Einstein's Theory of Relativity.
Answer:
Schachter-Singer theory
Explanation:
Its also known as Two -factor theory in which Schachter-Singer consider that there is two main parts one is physical arousal and other one is cognitive labeling. Like when we feel physical arousal like increases heart beat, trembling, sweating than we label that emotions based on environmental cues.