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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 concept of evolution differ from that of change, and how can understanding this distinction help us adapt and grow in various aspects of life?

Evolution is a process of gradual change and adaptation over generations, driven by natural selection. Change, on the other hand, can be more immediate and random. Understanding this distinction can help us recognize patterns, anticipate challenges, and make informed decisions to adapt and grow in different areas of life.

How many years are between dinosaurs and humans?

Oh honey, there's about 65 million years separating those ancient dinosaurs from us humans. So, unless you've got a time machine stashed away somewhere, I wouldn't hold my breath for a dino-human reunion anytime soon.

Why isn't evolution of characteristics in an organism considered biotechnology?

Because the term technology is reserved for non-natural artifacts, whereas naturally evolved features are, well, natural.

How has a dandelion adapted to its environment?

It can grow anywhere, when people take off dandelions the root still remains and grow into another dandelion and dandelions send chemicals to other plants nearby which make thos plants grow slowly so dandelions get more nutrients and water for themselves.

What is a Hilton garden inn evolution room?

Oh, dude, a Hilton Garden Inn Evolution room is basically a fancy way of saying a renovated room at a Hilton Garden Inn. It's like the hotel's glow-up moment where they upgrade the furniture, decor, and amenities to make you feel like you're living your best life in a hotel room. So, if you're into that whole "evolution" thing, go ahead and book yourself one of those swanky rooms.

Why do so few birds have penises?

Because the dinosaurs from which birds are descended did not have penises. Nevertheless, penises have evolved in a few separate bird lineages, like the group to which ducks, geese and swans belong. But the separate origins of these organs show: they are quite different in structure and function from mammalian penises.

The interruption of a natural process?

An interference with the normal flow or progression of events in nature. This can lead to disruptions in ecosystems, climate patterns, and biodiversity, with potential negative consequences for the environment and living organisms. It is often caused by human activities such as deforestation, pollution, and habitat destruction.

What is an example of convergent evolution in the tundra?

An example of convergent evolution in the tundra is the similar physical adaptations seen in Arctic foxes and North American red foxes. Both species have evolved thick fur, compact bodies, and small ears to survive in the cold tundra environment. Despite not being closely related, they have developed these shared traits due to the similar selective pressures of the harsh tundra climate. This convergence highlights how different species can independently evolve similar characteristics to thrive in the same ecological niche.

What is the change in a population over time is called?

The change in a population over time is called population dynamics. This includes factors such as birth rates, death rates, immigration, and emigration that influence the overall size and structure of a population.

What did Alfred Russel Wallace contribution to evolution?

Alfred Russel Wallace is best known for independently formulating the theory of natural selection alongside Charles Darwin. He conducted extensive fieldwork in the Amazon and the Malay Archipelago, leading to significant insights about species distribution and adaptation. Wallace's paper on natural selection, presented jointly with Darwin in 1858, helped catalyze the acceptance of evolutionary theory. Additionally, his work on biogeography laid the foundation for understanding how geographic barriers influence species diversity.

Does intelligent design challenge the theory of evolution?

No. Intelligent Design is not a viable theory since it does not explain all of the steps nor provide any evidence to substantiate its claims. As a result, the Theory of Evolution remains unchallenged by it.

What is the mechanism for most evolutionary change?

Most evolutionary change occurs through natural selection, where individuals with traits that provide an advantage in their environment are more likely to survive and reproduce, passing those advantageous traits on to future generations. This process leads to the gradual accumulation of beneficial traits in a population over time.

How do stars change over time and what factors contribute to their evolution?

Stars change over time due to the nuclear fusion reactions happening in their cores. As a star ages, it goes through different stages based on its mass. Factors like mass, temperature, and composition contribute to a star's evolution. These factors determine how long a star will live and what it will become at the end of its life cycle.

How does the star movement over time affect the formation and evolution of galaxies?

The movement of stars over time influences the formation and evolution of galaxies by shaping their structure and dynamics. As stars orbit within galaxies, their gravitational interactions can lead to the merging of galaxies, the formation of new stars, and the redistribution of gas and dust. This ongoing process of star movement plays a crucial role in shaping the overall appearance and behavior of galaxies throughout their lifespan.

What is an evolutionary track and how does it influence the development of species over time?

An evolutionary track is the path that a species follows over time as it adapts to its environment and changes genetically. It influences the development of species by determining which traits are favored and passed on to future generations, leading to the evolution of new species or variations within a species.

What is one basic trend in animal evoulution?

One basic trend in animal evolution is increasing complexity, with species developing more specialized structures and functions over time. This can be seen in the gradual development of anatomical and physiological adaptations in response to changing environments and ecological pressures.

Darwin concluded that organisms on the Galápagos Islands?

Darwin concluded that organisms on the Galápagos Islands showed variation from island to island, leading to his theory of natural selection as a mechanism for evolution. He observed unique adaptations in species such as finches and tortoises, which helped support his ideas on how species could change over time in response to their environment.

What is cuvier theory of evolution?

Cuvier believed there was no evidence for the evolution of organic forms but there was evidence for succeeding creations after the catastrophic extinction events.

But in the course of history, he said, catastrophic events had killed off all members of some species, and their fossils would no longer be seen in the rocks. Later, he believed the old species were replaced by new ones that repopulated Earth.

Like many other scientists of his day, Cuvier spoke about the theory of catastrophism. This theory was based on the statement that there have been violent and sudden natural catastrophes such as great floods and other very sudden physical changes to the earth. Organisms that were living in those areas where these sudden, violent changes had occurred were often killed and replaced by new life forms moving in from other geographic areas. The fossil record of this type of area would show rapid changes in species.

Are seals and dolphins examples of convergent evolution?

Yes, seals and dolphins are examples of convergent evolution. Despite having different ancestors, they have evolved similar streamlined body shapes, flippers, and adaptations for swimming in their aquatic environments. This convergence is a result of facing similar environmental pressures in their habitats.

Who believed if an individual uses a trait more it gets bigger lamark or Darwin?

Jean-Baptiste Lamarck believed that if an individual uses a trait more frequently, it will become more developed and prominent in subsequent generations. Charles Darwin, on the other hand, proposed that favorable traits are naturally selected for in a population over time through the process of natural selection.

How do the people affect the Earth?

People affect the Earth through activities like deforestation, burning fossil fuels, and producing large amounts of waste, which contribute to climate change, habitat destruction, and pollution. Human actions can alter ecosystems, disrupt natural processes, and lead to negative consequences for the environment. Ultimately, human impact plays a significant role in shaping the health and future of the planet.

Why whites are white and blacks black?

It is an adaptation to sunlight intensity, the risk of sunburn, and the need to manufacture vitamin D in the skin with the help of sunlight.

In Africa where modern humans evolved the sunlight intensity is strong and risk of sunburn is high, dark skin evolved to protect from sunburn and there was no problem making more than enough vitamin D.

As modern humans migrated out of Africa they entered areas with less sunlight, vitamin D deficiency diseases began to be a problem but the risk of sunburn was much lower, light skin evolved to raise vitamin D production.

The fact that we can now take vitamin D supplements and can use sunscreen to prevent sunburn has removed those selection pressures, so skin color differences will no longer be driven by natural selection. Instead they will most likely be controlled by personal preferences and sexual selection in the future.

Which event in the cell cycle is DNA duplicated?

DNA is replicated in the S phase; synthesis phase.

Who figured out evolution?

There have been quite a few humans who tried to work out how organisms change with time. Lamarck tried his ideas but was discredited.

Today's Theory of Evolution was discovered with evidence and thought by Charles Darwin and Alfred Russel Wallace. Darwin spent the most energy on gleaning evidence so the theory is these days credited to him. As David Attenborough says, he gave the idea 'irresistable force' when he happened upon a mechanism by which it could occur: Natural Selection.

Are humans made by God or evolved from monkeys?

Religious believers of creation say humans are made by God.

Otherwise, neither; evolution does not teach that humans evolved from monkeys, but instead from ape-like creatures millions of years ago.