Which method is the typical first step when scientists communicate their scientific results?

i believe you meant to say air rather than hair so the answer is below ")

the dead sea, the lowest place on earth at 430 metres (1,410 ft) below sea level, has a correspondingly high typical atmospheric pressure of 1065 hpa.

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.