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Dinosaurs first appeared in what period?
Dinosaurs first appeared in the tertiary stages of the Earth. Tertiary was when the dinosaurs ruled the earth. Then there was jurassic and then creteacious
Which planet orbit around the sun first?
Mercury is the closest planet to the Sun and has an orbital period of 88 Earth days. (Pluto in contrast has an orbital period of about 248 Earth years.)
Rotational period of mercury?
mercury is the first planet closest to the sun which makes it the hottest. its period of revolution is 88 days.
During the Silurian period the first animals to adapt to life on land were?
Arthropods ( EARTH SCIENCE )
What era was when life first flourished on Earth?
The Archean Eon is the period in which the first life on Earth appeared.
When did first trilobbites appear on Earth?
About 526 million years ago during the early Cambrian period.
What is the oldest era geologically?
The oldest geological era is the Precambrian period. It is the period of Earth's formation, as well as the origin of the first single and multi-celled organisms.
When were dinasours first on earth?
First dinosaurs on earth where during the Triassic Period approximately 230 million years ago. Plateosaurus was one of the first large plant-eating dinosaurs.
How long is Mars' orbital period?
686.980 earth days, sidereal period; 779.94 earth days, synodic period.
How long have reptiles inhabited the earth?
Reptiles inhabited the earth before dinosaurs inhabited the earth. The first reptiles appear in the fossil record over 300 million years ago, in the Carboniferous period of the Paleozoic era.
Are alkali earth metals liquids?
no, the alkali metals make up the first period and all of them are highly reactive.
What is mercury revolution period?
mercury is the first planet closest to the sun which makes it the hottest. its period of revolution is 88 days
