What is the eon, era, period, and epoch we are living in?

• phanerozoic, quaternary, holocene, and cenozoic

• phanerozoic, cenozoic, quaternary, and holocene

• quaternary, cenozoic, holocene, and phanerozoic

• quaternary, cenozoic, phanerozoic, and holocene

Mammals first appeared or emerged in this era:

• Paleozoic

• Mesozoic

• Cenozoic

• Industrial

Which of the following is the correct sequence of geologic time from smallest to largest unit?

• era, eon, period, and epoch

• epoch, eon, era, and period

• epoch, period, era, and eon

• era, eon, epoch, and period

These were the dominant species that existed during the Paleozoic era:

• Dinosaurs and reptiles

• Aquatic life and reptiles

• Dinosaurs and aquatic life

• Ancient aliens

Also known as the Great Dying, approximately 90% of life during this extinction was obliterated by:

• supervolcano eruption

• asteroid

• unknown source

• flu virus

This event marked the end of the Age of the Dinosaurs during the __________ era.

• asteroid impact - cenozoic

• supervolcano - jurassic

• supervolcano - cenozoic

• asteroid impact - jurassic

The first three eons were: Hadean, Archaean, and Proterozoic. They are better known as:

• PreCambrian Time

• Phanerozoic

• Mesozoic

• Cenozoic

What was the earth like during PreCambrian time?

• tropical climate with warm shallow seas

• vegetation and tectonic movement

• cooler temperatures because of nuclear winter

• intense volcanic activity, very warm temperatures

During the Mesozoic Era, volcanic activity was common because of:

• plate tectonics

• natural selection

• climate change

• meteor shower

Which of the following are not early invertebrates that existed during the Paleozoic era?

• arachnid

• trilobite

• amphibians

• crustaceans