Convergent evolution may be the words you seek. This often happens when different species have to adapt to a similar environment. An example would be the similar body shape, and the shape of appendages; of both fish and of marine mammals.
In commensalism, the species that benefits may evolve to maximize the benefits they receive. However, the species that is neither helped nor harmed may not necessarily evolve in direct response to the other species, as there is no selection pressure acting on them. Their evolution would depend more on other factors affecting their fitness in their environment.
This is a phenomenon known as competitive exclusion, where one species outcompetes the other for resources such as food or habitat. It can lead to niche differentiation, where the competing species evolve to occupy different niches to coexist. This competition can be a strong driver of natural selection.
When two different groups separate enough they can start evolving differently. This might happen with two groups that separate when a subgroup moves to a different continent for instance. The subgroup, over time, may begin to evolve in response to conditions in the new place, and the group left behind will not benefit from those changes. However, it might develop more adaptations to its own environment.
An association of two or more organisms in different species is called symbiosis. Symbiotic relationships can be classified into three main types: mutualism, where both species benefit; commensalism, where one species benefits and the other is neither helped nor harmed; and parasitism, where one species benefits at the expense of the other.
Different niches can exist in the same habitat through resource partitioning, where species evolve to use different resources or occupy different ecological niches within the same habitat. This can help reduce competition by allowing species to coexist by utilizing different food sources, habitats or behaviors. Additionally, species may adapt to different time periods for feeding or other activities, further reducing competition and enabling species to share the same habitat.
Fossils' existence confirms that species are not fixed but can evolve into other species over time
Coevolution
Fossils' existence confirms that species are not fixed but can evolve into other species over time
The gradual process by which certain species replace other species in an ecosystem is called ecological succession. This occurs as plant and animal communities evolve and adapt to changing environmental conditions over time.
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In commensalism, the species that benefits may evolve to maximize the benefits they receive. However, the species that is neither helped nor harmed may not necessarily evolve in direct response to the other species, as there is no selection pressure acting on them. Their evolution would depend more on other factors affecting their fitness in their environment.
Convergent evolution: Unrelated species develop similar traits in response to similar environmental pressures. Divergent evolution: Related species evolve different traits over time due to adapting to different environments. Coevolution: Two species evolve in response to each other, often developing specialized relationships. Parallel evolution: Two related species evolve similar traits independently. Adaptive radiation: An evolutionary process where one species diversifies into multiple new species in different ecological niches. Punctuated equilibrium: Evolutionary changes occur rapidly in short bursts, interspersed with periods of stability.
They evolve and adapt so they have traits hat are useful to them, by Natural selection. This means that members of a species that are isolated, well, natural selection makes those with the best chances for survival mate with each other and produce offspring with that trait.
Certainly. Every living species can evolve. At some point seaweed evolved out of something, and other plants no doubt evolved out of seaweed-like ancestors. However, no individual plant or animal can evolve in the sense of changing into a different plant or animal in the course of a single lifetime.
When things evolve, the whole species doesn't change. Theres one member of the species that is born different (slightly) and if it does well then it passes on its genes. The old species doesn't go away unless for some reason it stops doing well and dies out (by "doing well" I mean finding enough food and reproducing.) So to answer your question in a more straight forward way, they DID evolve because they aren't the same as prehistoric apes. They just didn't evolve in the same way we did.
A group of living things is called a population if they belong to the same species, a community if they comprise different species living in the same area, and an ecosystem if they interact with each other and their physical environment.
When two groups of the same species are cut off from each other, they evolve from mutations and natural selection independently. Each one could evolve into a different species. For instance, let's say two populations of a species of bunny exist, one in a desert and one in the artic. The one in the desert would likely evolve into a bunny which could keep cool and blend into rocks and sand, while the population in the artic would likely evolve into a species which could keep warm and blend into snow. The one species of bunny would then become two.