The Precambrian covers the majority of earth's history.
Hope this helps!
The correct answers are:
1. II and IV;
The relic boundaries are man-made boundaries that have existed in the past, but they are not existent in the present. This type of boundaries are often reminder of a period of dividing between the people with force. In the present, the relic boundaries may be found useful in order to divide the country into voting districts, but it can also very often be seen that even though the boundary doesn't exist anymore, the people on the opposite sides of it have different cultural traits. The perfect example is the Berlin Wall, where even nowadays it can easily be noticed that there's cultural differences between the Germans from the Western and the Eastern part.
2. II and IV;
The federal style of government is functioning very well in multiple countries throughout the world, but it also may be a step towards independence of a certain territory.
However, this system functions the best if a country has multiple ethnic groups, which dominate certain part of the country, or if the country has multiple political exclaves. A nice example is the Russian Federation, where these are the exact concepts used for the federal units in the country like Chechnya, Tuva, or Tatarstan.
Our world is losing oxygen and slowly progressing to way more co2 in our atmosphere
Continent jig-saw shapes when puzzled and combined together, formed one
big continent - Pangea, and was separated by drifts.
Fossil comparisons of different species were discovered into two
different, separated continents in which when you combine them, they were one
in the past.
Seismic, volcanic, and geothermal activity are found along imagined plate
boundaries.
Plates were actually rubbing against each other as evidence is seen on the
formed mountain ranges.
Paleomagnetism, magnetic field placement in the layers of the rock are
present.
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I think it’s to control the total fertility rate
