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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
What is the order of taxa from first to last?
Domain (least specific) Kingdom Phylum Class Order Family Genus Species (most specific) There are also subphylum, subclass, subfamily, etc. but these are the main categories.
How long does it take for soda to leave your system?
Soda typically takes about 1-2 hours to leave your system, but the effects of the sugar and caffeine can last longer.
How long do steel barns usually last?
Steel barns are typically very durable and are capable for lasting for many years. Typically, steel barns are built to last the owners for twenty or thirty years. In some cases, steel bars can last even longer.
How long does a yellow fever jab last?
The yellow fever vaccine provides immunity for at least 10 years. Some countries may require a booster dose after that time period for continued protection.
How has the classification kingdom system changed over the last 300 years?
Over the last 300 years, the classification kingdom system has evolved significantly, particularly with the advent of modern genetics and molecular biology. Initially, organisms were classified primarily based on morphological characteristics, leading to a relatively simple two-kingdom system of Animalia and Plantae. As research advanced, particularly in the 19th and 20th centuries, the five-kingdom system emerged, adding Fungi, Protista, and Monera. Recently, the introduction of genetic data has further refined classifications, leading to the three-domain system (Bacteria, Archaea, Eukarya) that reflects evolutionary relationships more accurately.
How has life changed for humans in the past 300 years?
how has life changed in the last 300 years
When was Australia's education system last changed?
How is Australia's education system
How has communication changed in the last 100 years?
Communication has changed very much in the past 100 years.
How has fashion changed in the last 200 years?
in the last 200 years fashion has changed in many wayse.g. in the 1960's the mini skirt was introduced
How has technology changed over the last 5 years articles?
How has technology changed in the last 5 years articles This doesnt help u now does it :)
How has tourism changed in the last 50 years?
Tourism has changed in the past 50 years by 35% and is still on the increase.
How has transport changed in the last ten years?
Arplanes
how has population changed in the last 200 years?
the crops
Has the definition of art changed in the last 1000 years?
no
What metric system is used in London?
The United Kingdom, of which London is the capital, has been in the gradual process of changing from the Imperial System of weights and measures (inches, feet, pounds, ounces, pints gallons etc.) for the last 25 years or so. The metric system is now used to measure most commodities, with the notable exceptions of beer and milk which are both still sold in pints. The temperature scale has also changed from Fahrenheit to Celsius. The British monetary system changed to metric in 1971.
How do you correct did you see the lost kingdom on television last knight?
The correct sentence is: Did you see The Lost Kingdom of television last night. 'Knight' is changed to 'night' because 'knight' is a knight in armor.
