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Yes
because they were covered by oceans millions of years ago.
the first plants appeared about 3000 years ago. the first plant was algae.
According to my Biology text, the first air breathing animal was a Scorpion-like Arthropod, about 444 million years ago.
In a word, plenty. The earliest fossils on earth are of stromatolites, marine bacterial mats. These date back more than three billion years. The earliest metazoans (multicellular organisms) are all marine creatures dating back some 700 million years. By 450 million years ago (the Ordovician) plants and insects began an earnest conquest of the land. Around three hundred million years ago we find the first fossils of amphibians, which all bear uncanny resemblance to sarcopterygian lungfish of that era. ALL terrestrial vertebrates bear the same familiar body plan. All of them are quadrupeds, even the cetaceans (marine mammals). Marine reptiles, marine birds, flying mammals (bats) are all laid out essentially the same. Their forms practically scream common ancestry.Certain slithering reptiles have lost their limbs, but even snake skeletal anatomy reveals where completely atrophied limbs had once attached in ancient ancestral forms.Paleontologists have never found a Homo sapien skull more than 200,000 years old, nor any hominid skull more than 7 million years old.It should be noted that a theory is a hypothesis that is supported by evidence. Geology, DNA, comparative biology, zoology, fossils and the ability for mutations to arise all provide plenty of evidence to support the theory of evolutionary biology.
Yes
90 years ago
The job requirements to become a veterinarian 15 years ago were a bachelors degree then DVM degree from veterinary school.
the very First Marine Reptiles Returned To the Ocean About 240 Million Years Ago,
Best guess is a proto-bacteria about 3 to 4 billion years ago. First vertebrate was a marine worm about 1 billion years ago.
They are classed as amphibians - or were in my biology classes 40 years ago...
Here are some interesting facts about biology —Biology is the study of life.—the Arabic bible which is called the Quran has revealed absolute facts about Biology in its true perspective some 1400 years ago. This can be a fruit of thought for us—Works with DNA
At least 18 years ago
because they were covered by oceans millions of years ago.
No, humans did not exist 410 million years ago. The earliest forms of complex life on Earth were marine organisms, such as early fish and invertebrates. Humans evolved much later, around 2 million years ago.
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the first plants appeared about 3000 years ago. the first plant was algae.