Today, the annual rate of tectonic plates movement is observed and measured by satellites.
So, the answer is option A. Satellites.
~Hope this helps!
A. Miguel de Cervantes wrote Don Quixote.
(In the future you may want to put Q's like this in the 'Spanish' category [or just Google it]. The book Don Quixote is a part of Spanish culture) :)
Answer:
I think this is the answer
The answer is b because the other ones are involved in environmental science
