Evolution

Chameleons have existed for at least 26 million years. That is how old the oldest fossil record shows them, but they are believed to have been around longer than that. A fossil ancestor to this clade of animals dates back some 100 million years.

For the same reason that fish, insects and spiders etc also lay large quantities of eggs. To ensure the survival of some of their offspring. The eggs and young are usually left unprotected and many will perish, by laying large quantities some are likely to survive and reach maturity.

As far as we know now it is. There is ample scientific evidence to support it. Some ask, "if we evolved from monkeys and apes, why do we still have monkeys and apes today?" Eugenie Scott (head of the NCSE) responds that that question is equivalent to, "if I descended from my cousin, why does my cousin still exist?

In answer biologists explain that you did not descend from your cousin, but that you and your cousin share common ancestry. Similarly, humans and the other primates (tarsiers, lorises, monkeys, apes) appear to have evolved from a common ancestor.

Natural selection acting on the available genetic variations within a species creates variations according to the needs and selection pressures in a particular environment. This can create a large amount of variation in a relatively short time such as in all the dogs, together with jackals, coyotes and wolves, which are all interfertile, yet which appear quite different in many ways.

We know the earth is billions of years old because we have accurate dating techniques that reveal that fact to us. Long lived isotopes, such as Uranium 235 and 238, Thorium, and Potassium 40 have half lives measured in millions and billions of years. The ratios of parent to daughter isotopes in decent samples reveals the time at which the rocks containing these elements were formed.

On every continent we have found fossils of dinosaurs (including Antarctica). And on every continent where we have found dinosaur fossils we have also found volcanic ash strata above and below those rocks--not always where we find dinosaur fossils, but fortunately often enough. The reason this is fortunate is that volcanic rock can provide absolute dates using the aforementioned radioisotopes that yield good estimates for the fossil bearing strata. Everywhere we have done this (and reliable dates have been obtained many hundreds of times) we have NEVER dated dinosaur fossils less than about 63 million years, or more than 250 million years old. The cretaceous/tertiary boundary has been accurately dated on all seven continents to about 65 million years ago.

The oldest fossils we find are of single celled marine organisms. Stromatolites (bacterial mats of aquatic colonies) have been dated to more than 3 billion years ago. So for several billion years earth's oceans teemed with single celled organisms while its land surface remained barren. A little over half a billion years ago we find the first multicellular organisms, still all in the oceans. Nothing on land. In the Silurian vascular plants first make their way on land, and primitive insects. Within a dozen million years or so we find the earliest amphibians, bearing uncanny resemblance to devonian lungfish. The tetrapodal structure of these earliest land animals is inherited by all subsequent terrestrial vertebrates, up until some reptiles (snakes) lose their limbs.

Nothing about the theory of evolution violates any physical laws, contrary to what some misinformed individuals may claim. Otherwise, scientists would readily reject the theory. In addition, nuclear physicists didn't simply invent evidence for an ancient earth to satisfy the needs of paleobiologists--they came by that evidence most naturally. Even before radioisotopes, however, earth scientists had worked out very closely the ages of the cenozoic, mesozoic, and paleozoic periods using well understood geological processes.

Finally, nothing about the theory of evolution denies the existence of God. It was widely believed, before Copernicus and Newton, that the planets were pushed about their orbits by heavenly hosts of angels. Newton's theory of gravity did not disprove the existence of angels any more than Darwin's theory disproves the existence of a Creator.

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comoscow would like to know more about the evolution of computer system because it don'st really sound very clear to me.

mearkats live in a desert type area and their water is supplied by the larve, scorpions, and bugs that they eat in the wild. Animal channel had a real good series on the mearkats and how they live. If you have a zoo exibit for them, I believe that you should give them as close to the type of food and environment that they would live in ( in the wild) . The purpose for having animals in a zoo should be to help keep these beautiful creatures breeding to help keep them alive and not become extinct.

Actually speaking electronic data processing doesn't go back more just half a centurti.e. they existence merely 1940's they very first modern electronic computer became operational only in early 1940's. Infact, its only a little morethan just five decades ago since the first modern electronic computer was brought in to existence for the purpose of bussiness data processing. Computer before that were only used in scientific and technological field.

flying Fish get there food by swooping down on themwhile in air usaully they feed on crabs,insects,larvae,zoo plankton,and any otheer living small organism that can fit in there mouth

Responde esta pregunta…la razón es que su evolución hizo que hubieran muchas subespecies y para poder mantener viva cada una de ellas se aparean solo con sus iguales y hasta hoy en día aun los pinzones siguen evolucionando.

The evolution of spatial illusion in Renaissance art marked a significant shift from the flat, two-dimensional representations of the medieval period to a more realistic depiction of space and depth. Artists like Filippo Brunelleschi and Leon Battista Alberti developed linear perspective, allowing for a believable three-dimensional space on a two-dimensional surface. This technique was further refined by masters such as Leonardo da Vinci and Raphael, who incorporated atmospheric perspective, shading, and foreshortening to enhance realism. As a result, Renaissance art achieved a new level of depth and spatial coherence, profoundly influencing the trajectory of Western art.

Studying human evolution helps us understand our origins, how we have adapted to our environment, and why we look and behave the way we do. It also provides insights into our place in the natural world and how we have evolved as a species over time. Additionally, studying human evolution can have important implications for fields such as medicine, genetics, and anthropology.

Natural selection is the changing of organisms gradually over time. Natural selection and evolution are parts of environmental science due to them being the studies of organisms.

The evolution of massage in Chinese culture has been significantly influenced by ancient practices from India, particularly Ayurveda, which emphasized holistic healing and bodywork techniques. Additionally, elements from traditional Chinese medicine (TCM), including the concepts of qi (energy) and meridians, shaped the understanding of how massage can promote health and balance. The integration of these diverse cultural elements created a unique system of massage that combines physical manipulation with energetic and medicinal theories, contributing to the rich tapestry of Chinese therapeutic practices.

Lyell's ideas on uniformitarianism, which suggested that geological processes occur at a slow and steady pace over time, provided a framework for understanding Earth's history. This concept of gradual change over long periods of time influenced Charles Darwin's thinking, as it allowed for the possibility of slow, incremental changes leading to the diversity of life observed on Earth. Darwin's theory of evolution by natural selection was therefore supported by Lyell's principles of uniformitarianism.

Charles Darwin is considered the father of evolutionary theory. His work on natural selection and the publication of "On the Origin of Species" in 1859 revolutionized the way we understand the diversity of life on Earth.

An example of evolution in anatomy is the modification of the forelimbs of vertebrates. While the forelimbs of mammals, birds, reptiles, and amphibians serve different functions—such as grasping, flying, or swimming—they share a similar underlying skeletal structure known as homologous structures. This similarity indicates a common ancestor, and over time, these limbs have evolved to adapt to various environments and lifestyles. For instance, the human arm, whale flipper, and bat wing all exhibit different adaptations despite their shared anatomical origin.

A mass extinction event creates a large gap in the biodiversity of an ecosystem or multiple ecosystems, which results in a rapid period of evolution of a range of different species that weren't particularly specialised to fill that niche.

The different teeth of humans are specialised to break down different types of food. Humans are omnivorous so we can eat meat, fruit, nuts etc. The different types of teeth have specialised over the countless generations to best suit this omnivorous duet.

One trend in human evolution is the increase in brain size over time, reflecting a gradual development in cognitive abilities. Another trend is the bipedalism, or the ability to walk upright on two legs, which distinguishes humans from other primates.

They are not inherited. If you cut off the tip of your finger, your children will not inherit it. That is what acquired means.

Jean-Baptiste Lamarck contributed to the theory of evolution through his ideas on inheritance and adaptation. He proposed that organisms could acquire traits during their lifetime based on their use or disuse of certain features, and that these acquired traits could be passed on to their offspring. This concept, known as Lamarckism, emphasized the role of the environment in shaping species. Although his ideas were later supplanted by Darwin's theory of natural selection, Lamarck's work laid important groundwork for evolutionary biology.

Dr.Goldberger did an experiment to see what caused pellagra