Answer: The Precambrian Era comprises all of geologic time prior to 600 million years ago.
Explanation: The Precambrian was originally defined as the era that existed before the emergence of life in the Cambrian Period. It is known that life on Earth began by the early Archean and that fossilized organisms became more and more abundant throughout Precambrian time.
Answer:
26 cantons
Explanation:
Zürich (ZH)
Bern / Berne (BE)
Luzern (LU)
Uri (UR)
Schwyz (SZ)
Unterwalden (Obwalden (OW) / Nidwalden (NW))
Glarus (GL)
Zug (ZG)
Freiburg / Fribourg (FR)
Solothurn (SO)
Basel (Basel Stadt (BS)/ Basel Land (BL))
Schaffhausen (SH)
Appenzell (Appenzell Ausserrhoden (AR) / Appenzell Innerrhoden (AI))
Sankt Gallen (SG)
Graubünden (GR)
Aargau (AG)
Thurgau (TG)
Ticino (TI)
Vaud (VD)
Valais / Wallis (VS)
Neuchâtel (NE)
Genève (GE)
Jura (JU)
that would be a primary source because it actually is his hat not a replica. a primary source is a firsthand, or the excerpt of someone who was actually there.
Believe it to be Chines, Persian, and Roman but I would wait for another answer to be sure. I will check my notes also.
