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In what era had small simple marine organisms?
Small simple marine organisms have existed since the Precambrian era, which ranges from about 4.6 billion years ago to around 541 million years ago. These organisms were some of the earliest forms of life on Earth and played a crucial role in shaping the planet's early ecosystems.
Which evolved first - organisms with complex body structures or those with simple body structures?
Complex organisms evolved from simple organisms, so simple organisms evolved first.
What is the difference between marine algae and marine plants?
Marine algae are simple, photosynthetic organisms that lack true roots, stems, and leaves, such as seaweed. Marine plants are more complex, multicellular organisms with roots, stems, and leaves, such as seagrasses. While both contribute to marine ecosystems, marine algae are typically found in intertidal and subtidal zones, while marine plants are found in shallow coastal waters.
When did the first marine plants appear on earth?
the first plants appeared about 3000 years ago. the first plant was algae.
Where did life explode for the first time?
Life is believed to have first emerged in the oceans over 3.5 billion years ago, with the earliest evidence of life found in stromatolites—layered structures created by microbial communities—primarily in places like Australia. This emergence occurred during a time when Earth was still largely covered by water, providing a suitable environment for simple, single-celled organisms to thrive. From these origins, life gradually evolved and diversified, eventually leading to the complex ecosystems we see today.
In what era had small simple marine organisms?
Small simple marine organisms have existed since the Precambrian era, which ranges from about 4.6 billion years ago to around 541 million years ago. These organisms were some of the earliest forms of life on Earth and played a crucial role in shaping the planet's early ecosystems.
What percentage of marine life are sponges?
Sponges represent approximately 5% of marine life in terms of species diversity. They are simple, multicellular organisms that play a crucial role in marine ecosystems by filtering water and providing habitat for various marine species. While they may not dominate in terms of biomass, their ecological significance is substantial.
What ecosystems include?
An ecosystem means the surrounding in which we liv with all other living organisms...in simple context to say is tat its our surrounding or Environment.
What eats crill?
Krill is important in the marine food chain and is eaten by a variety of animals, including whales, penguins, seals, fish, and seabirds. They are a crucial food source for many marine predators in ecosystems around the world.
Which evolved first - organisms with complex body structures or those with simple body structures?
Complex organisms evolved from simple organisms, so simple organisms evolved first.
What is the difference between marine algae and marine plants?
Marine algae are simple, photosynthetic organisms that lack true roots, stems, and leaves, such as seaweed. Marine plants are more complex, multicellular organisms with roots, stems, and leaves, such as seagrasses. While both contribute to marine ecosystems, marine algae are typically found in intertidal and subtidal zones, while marine plants are found in shallow coastal waters.
Is a marine flat worm a parasite?
maybe, maybe not The world may never know
When did the first marine plants appear on earth?
the first plants appeared about 3000 years ago. the first plant was algae.
Why is there a gap of time between the evolution of algae and trilobites?
There isn't, of course, a gap in time. There are, however, very few fossils intermediate between simple stromatolites (the first more or less multicellular organisms) and the first complex organisms found just before the Cambrian Explosion. This gap most likely exists because while predation already existed (organisms consuming other organisms), no organisms had yet developed an internal or external skeleton that could have been preserved at death. The very few organisms from that era that were preserved despite of this, were preserved in the form of molds and casts.
Where did life explode for the first time?
Life is believed to have first emerged in the oceans over 3.5 billion years ago, with the earliest evidence of life found in stromatolites—layered structures created by microbial communities—primarily in places like Australia. This emergence occurred during a time when Earth was still largely covered by water, providing a suitable environment for simple, single-celled organisms to thrive. From these origins, life gradually evolved and diversified, eventually leading to the complex ecosystems we see today.
Which statement best describes ecosystems on Earth?
Apex question test which best describes the first organisms on Earth is simple prokaryotes.
What does Organism mean in science term mean?
In science, an organism is any individual living being that exhibits characteristics of life, such as growth, reproduction, and response to stimuli. Organisms can be unicellular (like bacteria) or multicellular (like plants and animals), and they are the building blocks of all ecosystems. Organisms can range in complexity from simple single-celled organisms to highly specialized and complex organisms like humans.
