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In which geoligic era did trilobites and sharks coexist 1 Cenozoic 2 mesozoic 3 Paleozoic 4 Precambrian?
Wiki User
∙ 10y ago
precambrian is when all humans and living things and sharks existed of course
Wiki User
∙ 10y ago
Anonymous
Paleozoic
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What is a Triassic rock?
It is a rock that has been identified as having been created during the triassic geoligic period approximately 200 to 250 million years old
Do planets die?
Planets are not alive and therefore cannot die. However, planets that are geolocically active and have a magnetic field (like Earth) are considered to be alive. Planets that are not geologically active and do not have a magnetic field (like Mars) are considered to be dead. It is believed that Mars was geolilcally active (volcano remnants have been discovered) in the past and had a magnetic field caused by geoligic action in its core. After hundreds of millions of years, Mars' core cooled and the planet became geolically dead.
