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History of Life on Earth
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Total cards: 7•Content version: v3•Public deck•Updated: 8/1/2026
Card preview (7)
#1
Front (Question)
Precambrian Period
Back (Answer)
is was the period when the first life forms appeared
#2
Front (Question)
Paleozoic Period
Back (Answer)
the first land plants and vertebrates
#3
Front (Question)
Mesozoic Period
Back (Answer)
the first cone-bearing and flowering plants, dinosaurs, first birds and mammals
#4
Front (Question)
Cenozoic Period
Back (Answer)
modern plants and animals, humans
#5
Front (Question)
What was the name of the first kind of bird?
Back (Answer)
the archeopteryx
#6
Front (Question)
Nature of Life on Earth
Back (Answer)
the Earth appeared about 4.6 billion years ago, the first life form appeared 3.5 billion years ago, and the early atmosphere of the earth did not allow a lot of food or life
#7
Front (Question)
Earth’s early atmosphere
Back (Answer)
it was poisonous, made of many harmful gasses and water vapor with little to no oxygen