GEOLOGY
PALEONTOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Plants
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Alligators
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Bacteria
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Fish
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Detailed explanation-1: -The first ever living organism on Earth was a bacteria known as cyanobacteria.
Detailed explanation-2: -Earth has been a bacterial world for at least the last 3.5 billion years. In the oceans of our young planet, bacteria were among the first forms of life to emerge. Long before plants or animals had evolved, bacterial colonies flourished and grew.
Detailed explanation-3: -In July 2018, scientists reported that the earliest life on land may have been bacteria 3.22 billion years ago.
Detailed explanation-4: -They were the only life forms until about 2.1 billion years ago. Other life forms evolved from bacteria. Bacteria grow, reproduce, and carry out respiration.
Detailed explanation-5: -According to the origin of life the first originated organism on earth were the prokaryotic heterotrophs, which were non-green and they were anaerobes as oxygen was not available on earth at that time.