Worth 99 what was mohorovičić's observation? seismic waves travelled at constant speeds. seismic waves penetrated all earth's layers. seismic waves could not go through the brittle crust. seismic waves travelled at varying speeds.

jcxz

explanation:

the first two-party system consisted of the federalist party, who supported the ratification of the constitution, and the democratic-republican party or the anti-administration party (anti-federalists), who opposed the powerful central government, among others, that the constitution established when it took effect in

its d i know cause i've been googling it