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What are oldest life forms on earth?
In its 4.6 billion yearscircling the sun, the Earth has harbored an increasing diversity of life forms:for the last 3.6 billion years, simple cells(prokaryotes);for the last 3.4 billion years, cyanobacteriaperformingphotosynthesis;for the last 2 billion years, complex cells(eukaryotes);for the last 1.2 billion years, eukaryotes which sexually reproducefor the last 1 billion years, multicellular life;for the last 600 million years, simple animals;for the last 550 million years, bilaterians, water life forms with a front and a back;for the last 500 million years, fish and proto-amphibians;for the last 475 million years, land plants;for the last 400 million years, insects and seeds;for the last 360 million years, amphibians;for the last 300 million years, reptiles;for the last 200 million years, mammals;for the last 150 million years, birds;for the last 130 million years, flowers;for the last 60 million years, the primates,for the last 20 million years, the family Hominidae(great apes);for the last 2.5 million years, the genus Homo (human predecessors);for the last 200,000 years, anatomically modern humans.Periodic extinctions have temporarily reduced diversity, eliminating:2.4 billion years ago, many obligate anaerobes, in the oxygen catastrophe;252 million years ago, the trilobites, in the Permian-Triassic extinction event;66 million years ago, the pterosaurs and nonavian dinosaurs, in the Cretaceous-Paleogene extinction event.all dates are approximate
Do humans have two hips?
At last count, one pelvis, two hips.
Who said to become educated is to become more human?
That would be Dr. J. Lawrence Walkup, former president of Northern Arizona University. The exact quote is actually "To be educated is to become more human." The last time I was on campus (which was a few years ago), this quote was inscribed on a plaque on north campus, I believe in front of the Gammage Building.
How is Eubacteria helpful to humans?
archaebacteria is helpful to humans in many ways!
How long does a yellow fever jab last?
how long does a yellow fever injection last for
Humans have become dominant in the last how many years?
1 Million years ago ^ ^ <APEX>
How have humans altered the biome in the last 100 years?
What biome
How has life changed for humans in the past 300 years?
how has life changed in the last 300 years
Why has golf become so popular in the last ten years?
Golf has become more popular in the last ten years mostly due to media advertising.
What region of the world that was likely occupied last by early humans was?
The last region of the world to actually become populated by humans were some the Pacific islands. Many of these have only been settled in the past few hundred years. Antarctica has been explored more recently, and there are research stations there, but there are no true human inhabitants there.
What is the region of the world that was likely occupied last by early humans was?
The last region of the world to actually become populated by humans were some the Pacific islands. Many of these have only been settled in the past few hundred years. Antarctica has been explored more recently, and there are research stations there, but there are no true human inhabitants there.
What best describes global CO2 emissions?
The amount of CO2 released by humans has increased over the last 200 years. This increase is primarily due to using fossil fuels in industries and vehicles.
Were there earthquakes before humans were on earth?
Humans have walked the earth for the last 50 - 200K years. There have been earthquakes since the formation of the planet ~4.5 billions years ago - long before humans were around.
Which Living thing that has become extinct in the last 20000 years?
Dodo
What are five words that have become popular in the last five years?
metro
Do humans live for as long as a million hours?
That's 114.5 years - think you can last that long ?
How have rainforests changed over100 years?
in the last hundred years humans have changed the rainforest by reduce of deforestation and we have people looking after the enviorment
