They use maps and satellites.
Answer:
Rotation = Like on day
Revolution = One year
Explanation:
There is one rotation every 24 hours
There is one revolution every 365 days
I say consequences of the Black Death included a series of religious, social, and economic upheavals, which had profound effects on the course ofEuropean history. The Black Death was one of the most devastatingpandemics in human history, peaking in Europe between 1347 and 1350 with 30% to 65% of the population killed. It reduced world population from an estimated 450 million to between 350 and 375 million. It took 80 and in some areas more than 150 years for Europe's population to recover.f<span>rom the perspective of many of the survivors, however, the impact was much more benign, for their labor was in higher demand. Hilton has argued that those English peasants who survived found their situation to be much improved. For English peasants the 15th century was a</span><span> </span><span>golden age of prosperity</span><span> </span><span>and new opportunities. Land was plentiful, wages high, and serfdom had all but disappeared. A century later, as</span><span> </span><span>population growth</span><span>resumed, the peasants again faced deprivation and famine. i hope this helps you</span>
Iron was able to show previous orentations of earth's magnetic field
