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When did life on earth begin to evolve?
Scientific evidence suggests that life began on Earth approximately 3.5 billion years ago. The Earth formed 4.5 billion Years ago. The Earth was a dead planet for about 1 billion years. Some evidence would suggest that the first forms of life began more like 3.8 billion years ago, in which case the Earth was dead only 700 million years. The study of the processes which resulted in the beginning of life is called Abiogenesis. If it worked the same on other planets on other Sun in other galaxies, life may have begin 10 billion years ago in other galaxies. See related links. Note also that there are dozens of explanations for the beginning on life on Earth, including many based on religion.
How many times did photosynthesis evolve in the history of life on Earth?
Photosynthesis evolved multiple times in the history of life on Earth. It is believed to have evolved at least two separate times, leading to different types of photosynthetic organisms.
The presence of many different species is critical for the survival of some forms of life when...?
The presence of many different species is critical for the survival of some forms of life when environmental conditions change. This biodiversity provides resilience and adaptability, allowing ecosystems to better withstand disturbances and recover from challenges. Each species plays a unique role in maintaining the balance and functionality of the ecosystem.
What do scientist mean when they talk about the diversity of life?
When scientists talk about the diversity of life, they are referring to the variety of different species, genetic traits, and ecosystems present on Earth. This diversity is crucial for the health and stability of our planet's ecosystems and plays a key role in supporting human well-being.
How many different living things are on Earth?
There are estimated to be around 8.7 million different species of living things on Earth.
Is there life in the solar system?
Yes. Planet earth has many forms of life. However apart from on Earth there is no other life that we know of.
Does Earth have weather?
Yes, Earth has many different kinds/ forms of weather like raining, snowing, sunny, etc., etc.
How many forms of life are on earth?
Actually, it is the many species of insects that outnumber the animals.
Why are so many organisms live on earth today?
Many organisms live on Earth today due to the planet's diverse habitats, availability of resources, and adaptability of species to different environments. Evolutionary processes have also played a role in the proliferation of diverse life forms on Earth over millions of years.
What is life as you know it?
Life "as we know it" is a term which covers the many and varied forms which life on earth takes, from intelligent animals down to single-celled amoebas.
Is there life someone else in space?
There is almost certainly life out there in outer space. It could come in many forms, from protozoa, to intelligent life forms, to life forms unlike any that are found on Earth. There could be basic life forms on Mars, the satellites Titan or Europa. It is more than likely the nearest life forms on another place in the universe is countless light years from Earth, and there is an excellent chance, we will never know about these other life forms because they are too far away for us to reach travelling at far less than the speed of light.
Why is carbon the basis of life on this planet?
It comes in many different forms and is very stable(does not decay quickly)
Meaning of the word world?
A place in which there are many different life forms,cultures, religions, races and home to many eratic seahorses.
The life of the earth--Also kindly let me know how many more years will earth exist?
The Earth is 4.5 billion years old. Life has been around for 3.5 billion years. Complex life forms originated about 500 million years ago. There is no telling if/when life will cease to exist on Earth or if/when it will be destroyed in space.
In an ecosystem, the presence of many different species is critical for the survival of some forms of life when?
significant changes occur in the ecosystem
How many head does an alien have?
Currently there are no known alien life forms. If alien life exists it probably comes in many varieties. However, if life on Earth is any indicator, it is unlikely that aliens would have multiple heads. In all animals on Earth, multiple heads only occur with birth defects.
How many life forms are there?
It is estimated that there are around 8.7 million species of life forms on Earth, but the actual number could be much higher. The majority of these species are still undiscovered, especially in habitats like the deep sea and tropical rainforests.
