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Approximately what percent of the speies that have ever existed are on earth today?
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∙ 14y ago
.1%
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For approximately what percent of earth's total history has man been in existence?
.003 %
What was the date when earth existed?
Pick any date before tomorrow, and Earth existed on that date.
For how long were prokaryotes the only kind of life on earth?
Prokaryotes were the only kind of life on earth approximately 2 billion years ago. They existed long before eukaryotes ever came into existence at all.
How much of the earth is ready for use by humans?
Less than 1 percent of Earth's water is ready for use by humans. Earth is approximately 71 percent water but of all this water only about 2.5 percent is fresh water with the rest being salt water and thus not fit for human consumption. Of the 2.5 percent fresh water the majority of this is frozen in the polar icecaps, present in soil moisture or deep underground where it is out of reach.
How much of earths surface is covered by salt water only?
Approximately 67.8% of earth's surface is covered by salt water while only 3% is covered by fresh water. In total, the earth's surface is covered by 70.8% of water.
How long have homosapiens existed?
Homo sapiens have existed on Earth for approximately 300,000 years.
What percent of species that have ever existed are now on earth today?
10 percent
Approximately What fraction of the earth's total history have humans existed?
.00003
Is the Earth's surface 70 percent water?
Approximately, yes.
What percentage of earth history has humans existed?
Humans have existed for only about 0.2% of Earth's history, which is approximately 200,000 years out of Earth's 4.5 billion-year history. This indicates that humans are a relatively recent addition to the planet.
What percent of the earth water is salt?
Approximately 97.5 percent of all the water on Earth is salt water. Of the remaining 2.5 percent that is fresh, about 70 percent exists as ice.
For approximately what percent of earth's total history has man been in existence?
.003 %
Approximately what percentage of the Earth's surface is land?
About 29% of the Earth's surface is land, while the remaining 71% is covered by water.
Billion of years ago galaxies existed?
It is a true statement that galaxies existed billions of years ago. It is estimated that planet Earth is approximately 4.54 billion years old.
What percent of the land earth does not receives sufficient precipitation?
Approximately 50% of the land on earth does not receive sufficient precipitation.
Do ocean cover about 75 percent of the entire earth?
Yes, the oceans cover approximately 70% of the earth's surface.
How much the water makes up the earth's surface?
Approximately, 70 percent of the Earth's surface is covered by oceans and seas.
