... Enough for themselves.
Workers in subsistence agriculture either live in the past or isolated areas so they only produce enough for personal consumption as there is no one to trade with.
Answer:
The national hurricane program
Explanation:
The National Hurricane Center (NHC) can be understood as the department of the National Oceanic and Atmospheric Administration's National Weather Service in the United States that is responsible for tracking and forecasting tropical weather systems between the Prime Meridian and the 140th meridian west poleward to the 30th parallel north in the northeast Pacific Ocean and the 31st parallel north in the northeastern Atlantic Ocean
In a white dwarf, gravitational collapse is prevented by electron degeneracy pressure. this is a result of the pauli exclusion principle, which basically states that two electrons cannot occupy the same orbital/energy level at the same time.
The answer would be B. It has made the process faster.