Whoever gets this right gets 50 points and est.( no links) What unit of time is the earliest span of time in Earth’s history?
are divided into and periods can be further divided into .
What are the 3 eras of geologic time?
Identify the era in which the following occurred:
Reptiles become dominant at the end of the era
Flowering plants became most common
Kinds of mammals increased
Dinosaurs became extinct
Seed plants were common by the end or the era
New mammals appeared while others became extinct
Formation of supercontinent Pangaea
Began with early invertebrates
Small mammals and birds appeared
Early vertebrate fish
Break-up of Pangaea
Flowering plants appeared at the end of the era
Early land plants (simple mosses and ferns)
Reptiles (including dinosaurs) dominated this era
Cone-bearing plants appear
First amphibians appear
Humans are a part of this era
Arachnids and insects appear
Diversity of life forms increase
Present Day Earth is in this era
Mass extinction of most marine invertebrates and amphibians
What are some events that can produce rapid changes to environmental conditions?
What typically results from these global events?
What marks the end of the Mesozoic Era?
What effects can explosive volcanic activity have on Earth?
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Whoever gets this right gets 50 points and est.( no links) What unit of time is the earliest span of...
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