Evolution

Emotions are a type of behaviour, or instinctive reactions driving certain types of behaviour.

As an example, let's consider the anger one feels if one is stolen from. An organism that would routinely let his food be stolen away from him by others, without doing anything about it, would not do very well: his lineage would not be likely to last very long. An organism that had an instinctive reaction towards the thief that prevented the thief from taking his food would do much better. Anger is such an instinctive reaction. Therefore, should an inclination towards an angry reaction arise in the population, the genes associated would immediately be favoured in the population gene pool, and the trait would be able to spread and develop.

This is, of course, rather a simplistic representation of the principles involved, but informative enough, I hope.

That they evolved from land animals.

The theory of evolution by natural selection, first formulated in Darwin's book "On the Origin of Species" in 1859, is the process by which organisms change over time as a result of changes in heritable physical or behavioral traits.
Changes that allow an organism to better adapt to its environment will help it survive and have more offspring. The theory is sometimes described as "survival of the fittest," but that can be misleading. Here, "fitness" refers not to an organism's strength or athletic ability, but rather the ability to survive and reproduce.
Mutations can be caused by random errors in DNA replication or repair, or by chemical or radiation damage. Most times, mutations are either harmful or neutral, but in rare instances, a mutation might prove beneficial to the organism. If so, it will become more prevalent in the next generation and spread throughout the population.
In this way, natural selection guides the evolutionary process, preserving and adding up the beneficial mutations and rejecting the bad ones. Mutations are random, but selection for them is not random.

False. Isolation promotes natural selection of the unique mutations and recombinations in an isolated population, thus leading to evolution.

The origin of humans can be traced back to a common ancestor shared with apes around 6-8 million years ago in Africa. With various evolutionary adaptations over time, Homo sapiens eventually emerged around 300,000 years ago and evolved into modern humans as we know them today. Genetic and fossil evidence provide valuable insights into the evolutionary journey of mankind.

The animals that possess horns are generally herbivores; take for instance, cattle, sheep, rhinoceros, etc. The development of horns appears to be a structural or morphological modification to equip the herbivores (who lack well-developed canine teeth and sharp claws) with a self-protection mechanism. The horns are therefore exclusively employed in defence.

mitochondria and chloroplasts have their own DNA

Charles Darwin and Alfred Wallace were the first to formulate a scientific argument for the theory of evolution by means of natural selection

Charles Robert Darwin and Alfred Russel Wallace first purposed the theory of evolution by natural selection, but the theory accepted by most scientists today has been modified a bit since Darwin and Wallace's day.

There are many kinds of adaptations that animals have to protect their species against potentially deadly things like ponds drying up. Some fish (killifish) have adapted the ability to deposit their eggs in mud or moss, or plants, then when the water dries up, the eggs go dormant. When the water returns, the eggs hatch, thus giving you fish in your pond. Other fish have ability to make mud-nests for themselves (Lungfish). In these nests they lie dormant, breathing air in order to survive. When the water returns, they break out of their mud-nests and begin to swim around again. Still other fish may sneak across land to get to a pond after a rain, some will cross into the pond from other nearby water sources if there is a little bit of flooding, and in other extreme cases, some fish may be introduced by being caught elsewhere, then accidentally dropped into the pond.

The idea of evolution through natural selection was proposed by Charles Darwin, an English naturalist, in his book "On the Origin of Species" published in 1859. He observed the diversity of species and how they adapt to their environment, leading him to propose the theory of evolution as a mechanism for this process.

Darwin's theory was that beneficial traits would be favored in a population by a mechanism called natural selection. Lamarck proposed that acquired traits would be passed on to the offspring. Darwin's theory is favored over Lamarck's because there is no identified mechanism for passing on acquired traits e.g., your baby will not be born with pierced ears even though yours are pierced. In Darwin's theory, the traits that are favorable for an organism offer some adaptive advantage to those members of the population that possess it. Having the advantage allows them to produce more offspring e.g., rabbits range in color from black to white--in a snowy environment, the white ones have the advantage over the darker ones so they breed, well, like rabbits.

It didn't. It's an artefact of mathematics, found in the proportions of many geometric shapes. But although many people claim that this ratio organisms also show this ratio, this is simply not true, unless you apply such a wide margin of error as to make the entire notion of the golden ratio meaningless.

lacrosse was played by the native Americans way back when. they used all would sticks meaning, the head and the shaft were all carved from wood. they would string the head with leather and would use deerskin for a ball. the stick is usually made out of hickery. the sticks were all one size. eventually, lacrosse had different size shafts 30 inches is the normal length, 60 inches is the defensive length and i believe 40 inches is the golie length. the sticks were still made out of wood but were eventually hollowed out to lessen the weight. now, sticks are made out of metal such as titanium, alluminum, and scandium. the heads are now upgraded plastic meaning, you can ether have an extremely stiff plastic or a very flexibal one. the rules change year to year so you cant really explain them.

The specific "missing link" was a proposed extinct creature halfway in the evolutionary line between modern humans and their anthropoid progenitors, originally conceived as connecting humans to existing primate species. Since the actual evolutionary premise is that both apes and humans had a common ancestor (who may not have greatly resembled either of them), a "missing link" is highly unlikely to have existed at all.

* The fictional animated character Link in "Monsters vs. Aliens" (2009) is an ape-fish hybrid that does not correspond to the typical definition of the term.

No. Everyone is just made different. That's how life is.

The species could not adapt quickly enough to their changing environment to survive.

In the population of anteaters then and now we have variants. Organisms that have little differences in morphology and behavior. Against the anteaters immediate environment, specifically it's way of making a living ( eating ants ) there were some anteaters with better length snouts. These anteaters were selected by being better able to survive eating ants and thus they were more reproductively successful. So, the alleles for this successful traits were passed to progeny who had the same traits and over time the snout of anteaters changed, adapted, better to the way they made their ant eating living. This is evolution.

Actually, there are. It's called a melon. It is like a sonar. its in the dolphin's head. It works like this. The dolphin squeak & squeals and the sound bounces back off nearby objects and at the melon.

All living beings on Earth (and thus, all cells) are thought to be derived from a common ancestor. Solutions to many of the essential challenges that face a cell (such as the synthesis of proteins, lipids, and DNA) appear to have been achieved in this ancient common ancestor. The ancestral cell therefore possessed sets of proteins to carry out these essential functions. Many of the essential challenges facing modern-day cells are the same as those facing the ancestral cell, and the ancient solutions are often still effective. Thus, it is not uncommon for organisms to use proteins and biochemical pathways inherited from their ancestors. While these proteins often show some speciesspecific diversification, they still retain the basic biochemical characteristics of the

ancestral protein. For example, homologous proteins often retain their ability to interact with a specific protein target, even in diverse cell types. Because the basic biochemical characteristics are retained, homologous proteins are capable of functionally substituting for one another.

Flowering plants and bees. I believe this is called symbiosis.