Seismometers are tools which measure motion in the ground including seismic waves generated by earthquakes, volcanoes, and other activities which might create seismic waves. Seismometers measure any movement of seismic activity in the earth and today this is done by electronic means whereby the machine measures any changes in seismic activity in the surrounding areas of the seismometer. The first seismometer is believed to have been invented by Zhang Heng of China's Han Dynasty in 132 AD.
A- multinational corporation
<span>
</span><span>the time or date (twice each year)
</span><span>when day and night are of equal length</span>
Bom dia!
Pois, além de outras coisas, a exploração intensa da
Mata Atlântica colocou em extinção - e extinguiu - diversas espécies de
nossa fauna e flora, impedindo o reconhecimento e a catalogação de tais
formas de vida.
Abraços!
Answer:
B - sub-Sahara Africa
Explanation:
this region is already very dry - there has been over grazing of animals - deforestation that speeds up desertfication
