When did marine diversity start?
3.5 billion years ago
Evidence shows that life probably began in the ocean at least 3.5 billion years ago. Photosynthesis began more than 2.5 billion years ago—the Great Oxidation Event.
During what era did marine life flourish?
Paleozoic era
Learn more about the time period that took place 488 to 443 million years ago. During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the vast seas and the first primitive plants began to appear on land—before the second largest mass extinction of all time ended the period.
How did life become so diverse?
The diversity of species is the result of evolution. Their continued existence depends on surviving competition both within and between species. In order to survive, individuals of a species must solve some fundamental problems, including defending themselves, finding food and reproducing.
Why is ocean life so diverse?
“The oceans we see today are filled with a dizzying array of species in groups like fishes, arthropods, and mollusks, not because they had higher origination rates than groups that are less common, but because they had lower extinction rates over very long intervals of time.”
What is marine life Comparised?
Answer: Marine life, or sea life or ocean life, is the plants, animals and other organisms that live in the salt water of the sea or ocean, or the brackish water of coastal estuaries. At a fundamental level, marine life affects the nature of the planet.
Who proposed the current diversity of life?
botanist Carolus Linnaeus
It was developed by Swedish botanist Carolus Linnaeus in the 1700s. He tried to classify all living things that were known at his time. He grouped together organisms that shared obvious morphological traits, such as the number of legs or shape of leaves.
Why is there so much diversity of life on Earth today?
Ans : there are so much duversity in life on the Earth because there are great numbers of species on the earth, the present day organism are the end product of about 3.5 billion years of organic evolution on earth. thats why there are so much diversity in life on the earth.
Which ocean is most diverse?
Nadia will study their counterparts living in muddier waters in the Coral Triangle in southeast Asia. Nadia says, ‘This part of the world contains the highest diversity of marine species. There are more than 600 reef species, which is ten times the number in the Caribbean Sea.
When did the first complex life forms appear in the ocean?
On either side of the continent were the Panthalassic and the Pan-African Oceans. The first recorded complex life forms appear around 560 million years ago, though they were very different than the creatures we are familiar with today. Many were soft-bodied, with only a few tube-like creatures having a stiff outer sheath.
What was the ocean like during the Paleozoic era?
During this era, seas flooded the continents and receded several times. During the early Paleozoic three small continents— Laurentia, Siberia, and Baltica—split apart from the rest of the supercontinent Gondwana and formed the Lapetus Ocean in between.
Is there a timeline of the evolutionary history of life?
For more detailed and comprehensive coverage, see evolutionary history of life. This timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth.
What was first to move to land after Paleozoic era?
Plants were the first to make the move, followed by invertebrates. Not long afterward, vertebrates took to the land. Many new species appeared and thrived. The end of the Paleozoic Era came with the largest mass extinction in the history of life on Earth, wiping out 95% of marine life and nearly 70% of life on land.
