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Evolution
The scientific theory according to which populations change gradually through a process of natural selection.
5,264 Questions
How does the Tree of life help explain both the unity and diversity of life?
The tree of life would show unity due to the fact that all modern life probably originated from common ancestors (the further back you go, the more closely related we are), while the diversity is shown by the fact that while we are all related, life has branched off in very radical ways over the millenia.
Fish were the first chordates (organisms with a spinal cord), and also the first vertebrates (organisms with a spinal column). Developing a spinal cord gave them an advantage over their arthropod enemies, because they could swim faster and were much more agile.
It is difficult to say exactly when the first fish evolved or which was the first fish, but we do know that the earliest fish evolved between 400-500 million years ago. They were jawless, with gills and scales but no fins. Eventually fish greatly diversified and occupied almost every water environment. They developed fins and a strong tail to help them swim better. They were also the first animals to develop jaws and teeth, enabling them to eat other animals.
The following lists the possible evolution of the fish over time:
About 460 to 480 million years ago: The first jawless fish evolve. (It's worth noting here that this starting point is hotly debated in the scientific community.)
About 450 million years ago: The first jawed fish emerges.
About 390 million years ago: The ancestors of the bony fish evolve.
About 380 million years ago: The first shark-like fish evolves.
About 360 million years ago: The early offshoots of the bony fish (Osteichthyes) evolve into the first amphibians (intermediates between fish and reptiles).
About 175 million years ago: The first true bony fish emerge.
Between 190 and 135 million years ago: The first modern sharks evolve.
If man is a product of evolution does it follow that the human soul is included in such evolution?
It does not follow logically. It requires an assumption of the existence of soul.
Another answer:
Man isn't a product of evolution so therefore the human soul isn't included in such an evolution.
Another answer:
Man is a product of evolution and the soul does not exist.
Another answer:
I believe that Man has a soul. Evolution may explain some things (like the evolution of some species), but not everything. Nowadays more and more evidence show that evolution theory may be only part of the explanation of our existence. For example there is no way to explain altruism in the context of a 'survival of the fittest' theory (see other 'Evolution'-related questions for more on that). Art and various feelings are not explained by evolution theory. In that way the human soul is probably not just a product of evolution.
Another answer:
One vote for evolution and no soul. There are over 2,500 religions on this planet, and most will kill the other to prove a point, what kind of religion is that? More people have been killed in the name of a religion than for any other reason - i.e.: Iraq War is a great example, and the Twin Towers were taken out in the name of their religion being better than ours.... Einstein was once asked what he would change if he could. He said that he would never have completed the nuclear fusion calculations that put the final bomb together, and he said that he wished that religion had never been invented. Unless you're smarter than Albert Einstein, I go with him - no soul.
Answer/
No. Evolution is corporeal in nature and the soul is empyreal in nature. That finding determines in logical terms that the soul of man requires the genome of man for it to enter.
It determines that at the genealogical cusp where the genome has evolved into an enlightened creature at its conception, i.e. - genes are triggered for our branch that is distinct from the former branch of unenlightened creatures - the soul enters the genome according to its matching empyreal nature.
That is found in nature - according to the soul, is the creature, Mankind never was created an animal, an animal was never created a man, as described in ethereal terms found in genesis Scriptures.
How did Evolution in fruit habit of gymnosperm?
Evolution in fruit habit of gymnosperms occurred through the development of structures such as cones and seeds to protect and aid in the dispersal of their reproductive materials. Over time, natural selection favored those gymnosperms with more effective fruit structures, leading to the diverse array of fruit habits seen in gymnosperms today.
Which countries celebrate their independence day on 15th August?
India, Korea North, Korea South, Democratic Republic of Congo and Bahrain.
What was the belief in evolution called in the 1700s?
The belief in evolution in the 1700s was known as transformism or the theory of transmutation. This idea suggested that species could change over time, long before Charles Darwin's theory of evolution by natural selection gained prominence.
What is the meaning of organelles?
An organelle is a structure found within the cytoplasm of a plant or animal cell - in other words they are discrete sub-cellular components with specific functions
The following organelles are found in eukaryotic, not prokaryotic, cells:
- Nucleus
- Mitochondria
- Chloroplast (plant cells only)
One sperm cell must find the egg cell (oocyte) and penetrate the cell membrane. Only the head gets in. It (consisting almost entirely of DNA) is drawn to the nucleus of the egg cell where the chromosomes match and mix.
What is the hierarchy of complexity?
The hierarchy of complexity refers to how systems are organized based on their level of complexity. It typically ranges from simple systems with few components to complex systems with many interacting parts. In this hierarchy, systems are classified based on the number of elements, interactions, and emergent properties they possess.
Basically Charles Darwin came up with 4 needed characteristics that allows animals/plants to evolve. While studying in the Galapagos Islands he realized for a specific species to evolve they need:
1) To be isolated (on different continents or by water)
2) Reproduction has to be involved (takes many trial and errors)
3) Natural Selection has to occur (the fittest survive the weakest die...like giraffes and long necks if having a long neck to reach the high leaves in trees is needed they'll survive while the shorter neck giraffes die)
4) Have to correctly be fitted sexually (same number of gametes)
In this case probably it was a salmander that eventually became isolated by water therefore primarily not using any limbs and they kept reproducing while the ones with the longer legs lives became harder to survive from predators. The interesting observation is that several species have developed the limbless response to environmental conditions. Reptiles evolved to become snakes and both lizards and salamanders also developed this trait. Other animals which gave op limbs for increased mobility include whales and dolphins (limbless mammals) and ichthyosaurs (limbless reptiles) which evolved from limbed animals to emulate fish.
Why is it important to save water?
It is important to save water because one day the earth may run out of water. If you haven't noticed the oceans and rivers are slowly draining due to people using so much water. Once we don't have water we won't be able to live. One way we can save the water is by using DESALINATION. Water desalination is when you turn salty or brackish water in to fresh clean drinkable water
So it is very important that you save water not only for us but for our planet and the other living creatures as well.
How long did chemical evolution take?
Answer 1
The use of chemicals for healing or other purposes has been known from the time of Adam. Through inspiration the Lord made it know unto Adam and his progenitors which herbs to use. In the beginning only natural herbs were used.We now know that other elements taken from the earth, other than herbs, can be used when administered by themselves or combined are useful to mankind.
Answer 2
I believe that the question refers to the origination of life on Earth, and not to the use of chemicals in healing. It has not been established with absolute certitude when the first life appeared on Earth, but fossil evidence shows that stromatolites existed as early as 3500 million years ago, and more recent findings suggest the possibility that life already existed hundreds of millions of years before that. So the answer to the question is: it took the Earth at most a billion years after its formation to produce life, and probably at least half a billion years.
What is the difference between growing and developing?
The difference between growing and developing is that when you grow, your body becomes larger and developing is when you become more advanced in things, like you get more smarter or you learn more things.
Define the term Columbian Exchange What were the short and long term consequences of this exchange?
As a result of Columbus's voyages to the New World, a biological pipeline between America and Europe opened up that had been apart since before humans appeared on earth. The lands had drifted apart that had once been connected. Some species of plants and animals flourished in both areas, and some did not. There were many new animals and plants in the Americas that Europeans had never seen. And, Europeans brought plants and animals to the New World that America had never seen. This includes viruses and other biological organisms. The new animals brought to America upset the ecology of the area. The people living in the Americas did not have resistance to many of the "germs" brought by the Europeans. Biologically, the Indians had not been exposed to measles, smallpox, whooping cough, chicken pox, and influenza. The effect of these diseases on the Americans was catastrophic. Bacteria and viruses killed more Native Americans than did Spanish swords. The Indians also gave to the Europeans, venereal disease. Medical historians disagree on the origins of syphilis, but it was first identified by physicians in 1493, in Cadiz, Spain, the port which Columbus returned to after his first voyage. The Colombian Exchange was also a cultural exchange. New agricultural developments were traded, economic activity and opportunities opened up between the New and Old Worlds, and new ideas were exchanged.
Why was the evolution of the wateright egg so important in vertebrate evolution?
The evolution of the watertight egg allowed vertebrates to reproduce on land, breaking their dependence on water for reproduction. This adaptation enabled vertebrates to exploit terrestrial habitats and diversified their evolutionary opportunities.
How are dragonfly fossils formed?
Dragonfly fossils are formed through a process called fossilization, where a deceased dragonfly would typically be buried in sediment or mud. Over time, the soft tissues decompose, leaving behind hard parts such as exoskeletons or wings that can become fossilized. The surrounding sediment eventually hardens into rock, preserving the dragonfly remains as a fossil.
What is the difference between natural selection and artificial selection?
Natural selection is when 'nature chooses' the organism with the favourable characteristics to survive. E.G. Giraffe's Long-necked giraffes are 'chosen by nature' because they have the favourable characteristic of being tall, which allows them to reach higher branches in higher trees. Whilst shorter-necked giraffes cant reach this food source and as the shorter trees run out of vegetation, the shorter-necked giraffes will end up dead.
Artificial selection is when 'man-chooses' the organism that he wants because of their favorable characteristics,
E.G Choosing the 'fat' cows to breed to produce more fat cows because they have more meat in them. This will in-turn affect the numbers of the 'skinner' cows with undesirable characteristics.
Artificial selection is where man selects organisms with useful characteristics to him whereas natural selection is the process whereby nature selects the fittest organisms.
A2. Some social insects such as ants employ aphids to grow fungi, it follows that the ants also have a part to play in Artificial Selection, in both the aphids and the fungi. So it is not just man.
What are analogous structures?
Analogous structures are features of two different species that are similar in how the function, but the structure of the two features is different. The wings of an insect and the wings of a bird are analogous structures.
Is Philosophy just an armchair theory?
The following points could be discussed under this topic:
Talk what you know about this topic . Talk of its relevance in day to day life( or irrelevance if you feel so..). Talk of its influence in literature e.g . Influence of Kant on the romantic poets especially Wordsworth or of Bacon , Voltaire et al on the "Enlightenment"period etc. Talk of its influence in politics e.g. Influence of Nietszche on Hitler and subsequent genocide during Nazi regime etc. Talk of ethics and morals and their importance in life. talk of Indian philosophy. the Gita . Discuss whether we use any of these in our lives and their importance in moulding our values...etc...
What were the first forms of life?
The first forms of life on Earth were likely single-celled microorganisms, such as bacteria and archaea. These simple organisms are thought to have appeared around 3.5 to 3.8 billion years ago in early Earth's oceans.
Who refuted spontaneous generation?
Louis Pasteur is credited with refuting the concept of spontaneous generation with his experiments in the mid-19th century. He showed that living organisms do not arise from non-living matter but instead come from pre-existing life forms, laying the foundation for the field of microbiology.
What is an analogous structure?
You can say that they provide the same function for the organism, but their origin i different. For example, bats, birds and dragonflies all have wings, but bone placement isn't present in dragonflies as it is in birds and bats. They all let them fly, but they evolved into that form in different ways. It's two structures (or more) that perform the same function but evolved separately.
A missing link is something necessary to complete a series, like an animal fossil that has not yet been found to prove that apes evolved into humans. A missing link is an argument against evolution, claiming that it cannot be true just because we are lacking some fossils to prove i. However it could be argued that since we haven't even found all of the animals alive yet, there is no way we could know everything that has ever lived.
Half of all missing link fossils have been found in whole or part. Tiktaalik is a very important one connecting fish to tetra-pods.
What are geographic and reproduction isolation associated with?
Geographic isolation refers to physical barriers preventing gene flow between populations, leading to genetic divergence. Reproductive isolation happens when populations can no longer interbreed due to differences in mating behaviors, physiology, or genetics, resulting in the formation of new species. Both mechanisms play a crucial role in the process of speciation.
If evolution is how the world came to be why cant you find it anywhere else in space?
Evolution is a gradual process that occurs over billions of years, requiring specific conditions such as the presence of genetic variation and environmental pressures to drive adaptation. While the principles underlying evolution are universal, the specific circumstances needed for life to evolve as it has on Earth may not be present in other parts of the universe. Additionally, the vastness of space and the limitations of current technology make it challenging to detect life and evolution on other planets.
