Evolution

I'm not sure that there exists such a thing as "factors of macro-evolution". Macro-evolution is simply what happens when reproductively isolated populations continue to diverge as a result of micro-evolution. They drift apart genetically, behaviourally and morphologically, so that the differences between them become greater and greater. The mechanisms that cause this are reproductive variation and differential reproductive success, the principal mechanisms of evolution.

Darwin's theory of evolution was primarily based on observations he made during his voyage on the HMS Beagle, especially the geographic distribution of species and the fossil record. He also drew heavily on the work of naturalists before him, such as Lamarck and Lyell, and conducted experiments and collected data on variation and natural selection in species.

Evolution is primarily driven by natural selection, where organisms with advantageous traits are more likely to survive and reproduce, passing those traits on to their offspring. Mutations and genetic drift also play a role in introducing new variations within a population, which can contribute to evolutionary change over time.

The last universal common ancestor (or LUCA) for all known life would have been some single celled organism similar to prokaryotes. It might have been an RNA or DNA based organism, but it would have used more or less the same genetic code as all modern organisms (with a few minor variations) today. It will probably have lacked a true cellular nucleus, and many of the organelles that modern organisms have, but it would still have used ATP as a key factor in its metabolism.

Note that, like with all Most Recent Common Ancestors for any group, it is not necessary that a single species of organism is the sole ancestor for all modern life. It may well be possible that different species contributed to modern life (see also: multiple origins hypotheses). There will be one single ancestor common to any specific set of traits in all the diverging lineages, but, depending on the set of traits examined, they may lead to different origins. Compare, for instance, to mt-DNA Eve and Y-chromosome Adam: there is one most recent common ancestor for all surviving variations of mitochondrial DNA via matrilineal descent, but there is a different ancestor, living in a different era, for all variant Y-chromosomes surviving through patrilinial descent. It is, however, likely that there was, at some time, indeed one single species or closely linked collection of species of organisms from which all modern life descends. Also note that LUCA concerns only the most recent of such ancestral organisms: it itself would have had ancestors, and shared ancestors with other lineages existing at the time.

Creationism basically promotes an essentialist notion: the notion that life is static and lifeforms unchanging. The facts show that life is continually diverging, stemming from common ancestors. This disproves the notion of special creation of modern lifeforms, and the notion that such lifeforms are essentially unchanging.

The basis for evolution is the process of natural selection, which drives the gradual change in the genetic makeup of a species over time. Individuals with advantageous traits are more likely to survive and reproduce, passing on their genes to the next generation. This leads to the accumulation of beneficial traits in a population over generations.

Charles Darwin's theory of evolution is based on the idea that all living beings have evolved over time through natural selection. This means that individuals with beneficial traits are more likely to survive and reproduce, passing on those traits to future generations. This process leads to the gradual changes in species over time.

Similarities in macromolecules, such as DNA and proteins, among different organisms can be used as evidence to support evolution because these similarities can be used to construct phylogenetic trees that show how different species are related to each other. The more similar the macromolecules are between two organisms, the more closely related they are thought to be, indicating a shared evolutionary history. This provides molecular evidence that supports the idea of common ancestry and gradual evolution over time.

Spontaneous evolution is evolution that is not moderated by intentional beings and actions. Most evolution, in other words. Usually we call non-spontaneous evolution (ie. evolution that *is* moderated by intent): breeding.

Inductive reasoning was primarily used in the development of the theory of evolution. Scientists collected and analyzed data from various observations in nature to formulate general principles and make hypotheses about the process of evolution. By studying patterns and evidence, researchers were able to draw logical conclusions about how species change over time.

Seasonal isolation refers to a reproductive strategy where species mate or reproduce only during certain times of the year, typically tied to environmental cues such as temperature or day length. This can help ensure that offspring are born during times when conditions are most favorable for their survival and success.

Charles Darwin is credited with founding the modern theory of evolution with his book "On the Origin of Species" published in 1859. He proposed the concept of natural selection as a mechanism for species' adaptation and survival.

Competition is important in evolution because it drives the process of natural selection. Organisms with traits that provide an advantage in competing for resources are more likely to survive and reproduce, passing on those advantageous traits to their offspring. This leads to the gradual evolution of species over time.

The theory of evolution posits that all living organisms have descended from a common ancestor through a process of natural selection, genetic mutation, and adaptation to their environments. This explains the diversity of organisms on Earth as the result of gradual changes over millions of years. Evolutionary processes help organisms become better adapted to their environments, leading to a multitude of species with different characteristics and traits.

Evolution may refer to both the observed phenomenon and the theoretical framework explaining observations in terms of what we know of that phenomenon. Phenomena need no support, just verification. Theories aren't usually supported by other theories, but by observational data. Just so for evolutionary theory: it's supported by the observations in embryology, genetics, comparative genomics, palaeontology, ethology, zoology, microbiology, molecular biology, and so forth.

Stephen Jay Gould proposed the theory of punctuated equilibrium, which suggests that evolution occurs in short bursts of rapid change followed by long periods of stability. This challenged the traditional view of gradual evolution proposed by Darwin. Gould's work helped to broaden our understanding of the pace and mechanisms of evolutionary change.

The "rate" of evolution is most accurately gauged in terms of divergence between genetic sequences. Chromosomes are basically groupings of such sequences. It is certainly possible that the number and order of these groupings affect future developments (for instance: polyploidy and chromosomal fusions can affect speciation events), but they do little to affect the overall "rate" of divergence.

1. Variation: Within a population, individuals have different traits.
2. Selection: Certain traits provide individuals with a better chance of survival and reproduction.
3. Reproduction: Individuals with beneficial traits are more likely to pass on these traits to their offspring, leading to a shift in the population's gene pool over time.

The harsher the environment the more natural selection plays a role because the smallest advantage might be enough, hence humans with a very easy environment where genes don't offer a significant advantage this doesn't really count for humans.

And how much a species reproduce, the more they reproduce the more chance for a beneficial mutation.

Hawaiian honeycreepers are a diverse group of birds, descended from a common ancestor. Their adaptive radiation in Hawaii, where they diversified into various species with different beak shapes and sizes to exploit different food sources, provides strong evidence for evolution through natural selection. This diversification over time supports the idea that species can evolve to fit specific ecological niches.

The idea of evolution is that evolution is a fact and the theory of evolution by natural selection explains much about the fact of evolution.

Your question is ill posed. A more modern phrase would say your question is malformed.

How could the fact of evolution be a threat to anything? How could the theory that is the backbone of biology not be one of the greatest progressions in science?

Much confusion between fact and theory. Theory explains fact and encompasses fact and is a higher scientific concept than fact.

The formation of new species from existing species is called speciation. This process occurs when populations of a species become isolated and undergo genetic changes that lead to them becoming reproductively isolated from each other. Over time, these changes can accumulate, resulting in the emergence of distinct species.

Homologous structures are evidence for evolution because they indicate that different species share a common evolutionary ancestor. These structures have similar underlying anatomical or genetic features, suggesting a shared evolutionary history. For example, the bones in the limbs of vertebrates all share a common anatomical structure, indicating a shared evolutionary origin.

State evolution refers to the process by which a system's state changes over time in response to internal dynamics or external influences. It is often used in the context of systems theory and can involve the transition from one stable state to another or the gradual development of a system's properties. Understanding state evolution is important for predicting future system behavior and making informed decisions.