Evolution

The basic one of evolution. That organisms change over time.

According to the theory of evolution, more complex animals develop over time from simpler ones. This would indicate that humans and gorillas, who share many traits, had a common ancestor which was neither a human nor a gorilla, but a simpler form of both. This ancestor would have lived millions of years ago, because the process of evolutionary improvement within a species is a very slow one. Many new species could not compete, or otherwise died off.

its a secondary sexual characters of a male,

Anatomy is a useful tool in gaining evidence for evolution. The most useful thing is to examine homologous structures, ie anatomical similarities between different species.

The best example of this is the pentadactyl limb. It is found in humans, dolphins and bats. This shows that at some point in the past there must have been a common ancestor from which these 3 diverse groups of animals evolved.

That's a bit like asking why water is so important to oceans. The answer is that oceans are made mostly of water. Likewise, humans are (amongst other things) defined as organisms with large brains. The real question is how humans developed such large brains in the first place. And the list of contributing factors and competing hypotheses modelling them is diverse. Some hypotheses have the human brain grow in size as a result of the interaction between changing environmental and dietary circumstances, growing social complexity and increasing intelligence - an self-reinforcing phenomenon in other words. Contributing factors may include migration to less arboral venues, the discovery of fire and advanced tools, and so on.

Not in the same sense as humans. Kangaroos mainly keep cool by licking their forearms. They have an extensive network of blood vessels in their forearms which dilate when body temperature is raised. The saliva evaporates essentially taking the heat from the blood with it.

Badly.

The theory of evolution by natural selection has to do with the natural world and the selection of individual organisms.

Social Darwinism and like ideologies are biologically mistaken as the posit a form of group selection which has nothing to do with evolutionary theory but everything to do with social ideology trying to find scientific respectability.

I accept the modern theory of evolution by natural selection. You can not just on a whim put forth a scientific theory. I suggest you access a good dictionary. The scientific meaning of " theory " is generally the primary meaning.

Though one is a fish and one is a mammal they both have adapted to their immediate environment. Analogous traits.

Adaptation, natural selection, genetic variation, and speciation are key concepts that describe and influence the theory of evolution. These ideas explain how species change over time in response to their environment, leading to the diversity of life we observe today.

Lamarck's hypothesis about evolution was that animals would change based on their environment during their lifetime and pass on those traits to their offspring. This is different from Darwin's theory in that all animals mutate in someway and it's the surviving mutations that pass on that slowly change the animal over many generations.

Modern scientists explain the appearance of new traits within a species through genetic mutations. Mutations in an organism's DNA can lead to changes in traits, which may be beneficial, neutral, or harmful. Over time, natural selection can act on these new traits, determining whether they become more or less common in a population.

Punctuated equilibrium is a theory in evolution that suggests long periods of stability with sudden bursts of significant change. Therefore, gradual and continuous evolution is not a characteristic outcome of punctuated equilibrium.

A population that descended from a small number of common ancestors is more likely to have reduced genetic diversity. This can lead to an increased risk of genetic disorders and diseases due to a limited gene pool and less variation for natural selection to act upon.

By Herbert Spenser's misunderstanding of the theory and his thinking that the theory had something to say about human institutions. Darwin wanted nothing to do with this and said as much.

No, evolution does not describe how life began. Evolution explains how life forms have changed and adapted over time through the process of natural selection, but it does not address the origin of life itself. The origin of life is a separate field of study known as abiogenesis.

Causes of evolution and diversity of organisms include genetic mutations that introduce variations in the population, natural selection which favors individuals with advantageous traits, genetic drift resulting from random changes in gene frequencies, and migration that introduces new gene pools. These factors contribute to the variation and adaptation of organisms over time.

No. If one believes in god(s) one has stepped outside the remit of science. Methodological naturalism is the concept science must adhere to in the erection of theory. Supernatural forces can not be supported by the evidence and are not subject to falsification. If you wish to believe in god, do so, but deistic evolution has not one scintilla of evidence to support it.

Darwin's two main principles for evolution are natural selection, which describes how traits that improve fitness are more likely to be passed on to future generations, and descent with modification, which explains how species change over time through a process of gradual modification from a common ancestor.

The theory was rather well formed by 1839, but " The Origin Of Species ", which elucidated the theory, was not published until 1859.

The advent of the T-1 carrier as the preferred transmission medium was the principle force driving the evolution of the PBX

Any company which consumes raw material to assemble/manufacture products and/or generate a waste stream (every company!!)

Biological evolution is the process of changes that occur in living beings that can be passed on to their offspring.

Chemical evolution is the process of changes that occur in substances. However, scientists have found that these substances have changed to form organic molecules, meaning that they have created life from nonliving substances.

There is no such thing! The Bible states that God Created the earth in 7 days. Not a big bang hit the earth and everything was there.

The answer above is very Christian-centric, but here's an answer in a nutshell: Scientists can't prove that there was an evolution, but they cannot disprove it either. So evolution wasn't nessecary, if that's what you believe. You know what? This whole question is regarding YOUR personal beliefs.

When organisms evolve, it means that they have undergone genetic changes over time that result in new characteristics or adaptations that allow them to better survive and reproduce in their environment. Evolution is driven by natural selection, mutations, genetic drift, and other factors that lead to changes in the genetic makeup of a population.