How are eras and periods of the geologic time scale named? a) they are named for the places where geologists first described rocks or fossils from that time. b) their names are based on the names of scientists who discovered the rocks and fossils. c) they are named after plants and animals that lived during that time. d) their names are based on the number of centuries within that length of time.

A) They are named for the places where geologists first described rocks or fossils from that time

Explanation:

The relationship between  plant and animals, layers and types of rocks, fossils and radioactive dating are used for preparing Geologic Time Scale. Geologic time is comprise of  four  Eons namely Hadean (the initial stage) followed by Archean and Proterozoic and Phanerozoic in the recent . The Eons are classified into eras and theses eras reflect the changes in fossil record.  Eras are further divided into periods  and some periods into Epochs.

In periods a single rock system is found while the division in the era's reflect major changes in fossil record.

a. They are named for the places where geologists first described rocks or fossils from that time.

Explanation:

just did the test

thanos obviously donald trump aint got nothin on thanos

the vast majority of ballots have been counted nearly two weeks after one of the biggest political upsets in modern u.s. history catapulted donald trump to the presidency.

estimates show more than 58 percent of eligible voters went to the polls during the 2016 election, nearly breaking even with the turnout rate set during the last presidential election in 2012, even as the final tallies in states like california continue to be calculated, according to statistics collected by the u.s. elections project.

but among those figures were stark contrasts in key states that swing the election to trump — in ohio, wisconsin, iowa, michigan and elsewhere — indicating the president-elect’s leap from long-shot candidate to the most powerful political position in the world may have happened in part because of apathy toward hillary clinton’s candidacy, especially among the democratic base, several political scientists and organizations monitoring voter turnout told the pbs newshour.

while clinton is leading the popular vote by more than 1.5 million over trump as of sunday, she trails president obama’s 2012 totals by more than 2 million ballots — a chasm that may have cost her the election, said david becker, co-founder of the center for election and innovation and research.

“several million voters didn’t come out to vote,” becker said. “which is telling me that this idea of the trump wave, a huge number of voters shifting over to trump, is certainly not the story.”