Answer:
genrally it includes the population ,community, ecosystem,and biosphere .An ecosystem is all the living things in an area interacting with all of the abiotic parts of environment
1997 2003 and 2007 they have the most
Seismographs, Tiltmeters, and Correlation Spectometers.
Hope this helps!
-Payshence
It would be the last one ^^
I hope this helps