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What else can I help you with?
Why hasn't cyanobacteria evolved much since the Precambrian Era?
There are many different types of cyanobacteria. We are just now beginning to discover how many exist in a drop of seawater. We have no idea how many existed in the Precambrian era.
The earths magnetic shield has?
existed since the planet cooled
How long have water ice and wind effected the erosion of earths surface?
Since the begining of time.
When will the earth's core cool down?
The Earths core is defiantly slowing down but by how much? The Earths rotation speed has slowed by 2 milliseconds since 1820
Who were Artemis follower's?
It is not possible to name them, as there were many over generations since early Greek history.
Which era spans the greatest number of years in earths geological history?
The pre-Cambrian period which is a little over 630 million years ago. Before this era, there were no biota which leave a decent fossil impression - mainly soft-bodied forms. But see Ediacara in Wikipedia for more information.The earth by comparison is about 4.5 billion years since formation in roughly its present form. [So 630/4.5 000 ]
What is clock of eras?
The Clock of eras is a graphic aid to help us visualize geologic time. It uses the analogy of a circular clock to represent the development of our planet in geologic time. One can see at a glance the relative time lengths of each major geologic era. The Clock represents geologic time on the Earth since its birth to the present, from the initial events that brought about the formation up to now. Each hour represents approximately 375 million years
Which parts of North America have NOT been added to the continent since the Precambrian?
a few.
On which geologic time epoch did bees exist?
since dinosaurs
Why hasn't cyanobacteria evolved much since the Precambrian Era?
There are many different types of cyanobacteria. We are just now beginning to discover how many exist in a drop of seawater. We have no idea how many existed in the Precambrian era.
How has earths surface changed since the beginning of earths time?
The continents have moved, Volcanoes and mountains have made hige changes in the earths suface too.
How is the geologic used in relative dating?
The geologic column is the result of the core sample showing layers of artifacts and material. Since some of these can be carbon dated, a relative time period can be established.
How is The geologic column using relative dating?
The geologic column is the result of the core sample showing layers of artifacts and material. Since some of these can be carbon dated, a relative time period can be established.
When did algae live on earth?
since the earths been here
What are the advantages of using a spectroscope?
it has increased vision since its out of earths atmosphere
What percentage of the earths forests have been lost to deforestation since 1950?
40%
Do wishing rocks c ome from rainbows?
No, since they're metamorphic they come from millions of years of very specific geologic events.
