I'm not an expert on this but I'm speculating "fracking"
Which uses high water pressure to extract the coal.
Number one survival triad (Satir). consists of the kid and both parents which serves as the primary supply of a toddler's social interplay.
Social interaction is the manner of reciprocal influence exercised by using individuals over each other at some stage in social encounters. commonly it refers to stand-to-face encounters in which human beings are physically present with one another for an exact period.
Examples of social interplay may be seen in all walks of existence. A professor communicating records to their college students is an example of the alternate shape of social interaction. pals arguing over a restaurant is an instance of the warfare form of social interaction.
The observation of social interaction includes the careful evaluation of the practices of everyday speaking among human beings in diverse (usually) actual-life contexts, such as doctor-affected person visits, corporations, and human-pc verbal exchange.
Learn more about Social interaction here: brainly.com/question/13901349
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Answer:
4. The weight of the air above that location.
Explanation:
According to Hydrostatics, the pressure is directly proportional to fluid density, gravitational constant and height of the fluid column. That is to say:
Hence, the correct answer is option 4.
