When organisms disappear from earth?
When organisms disappear from Earth, it can result in imbalances in ecosystems, loss of biodiversity, and disruptions to food chains. This can have cascading effects on other species and the environment, potentially leading to further extinctions. It is important to address the root causes of these disappearances to protect the delicate balance of life on our planet.
A long definition of global warming?
Global warming is the continuing rise in the average temperature of Earth's atmosphere and oceans. The evidence for this temperature rise is unequivocal and, with greater than 90% certainty, scientists have determined that most of it is caused by human activities that increase concentrations of greenhouse gases in the atmosphere, such as deforestation and burning of fossil fuels. This finding is recognized by the national science academies of all the major industrialized countries.
Do darwins theories of evolution by natural selection contradict the principles of biogeography?
No, Darwin's theory of evolution by natural selection actually complements the principles of biogeography. Biogeography, the study of the distribution of species, provides evidence of how species have adapted to their environments over time through the process of evolution. Darwin himself used biogeographical evidence to support his theory of evolution.
What is the objection to Darwin's theory of evolution?
It flies in the face of Established Religion and every thing it stands for.
Although evolution makes no claim about religion or even how life sprang from un-life, religious adherents see it as undermining the belief that God created everything and as science trying to replace God or someother supernatural diety.
All evolution seeks to explain is the changing of living organisms from one form to another according to the dictates of the environment and natural selection, all of which could be ascribed to divine design or scientic explanation.
Divergent evolution is when a common ancestor gives rise to different species adapted to different environments or ecological niches. This process results in the evolution of distinct traits in each species to better suit their specific habitats and lifestyles.
When do scientists believe the chemical evolution occurred?
Scientists believe that chemical evolution occurred around 3.8 to 3.5 billion years ago on Earth, leading to the development of life from simple organic molecules. It marked the emergence of the first self-replicating molecules, laying the foundation for the evolution of diverse life forms over time.
According to Lamarck's hypothesis, the child would inherit the acquired trait of large muscles from the parent who developed them. Therefore, the child would also have a tendency to develop large muscles.
Yes, that's possible. Energy is neither created nor destroyed, only transferred. So it's conceivable that some of the particles in your body could have been part of a dinosaur at some point in the past, as they are continuously recycled through the environment over time.
According to evolution evolution generally occurs when?
evolution generally occurs when there are genetic variations within a population that provide a survival advantage in a particular environment. Those individuals with advantageous traits are more likely to survive, reproduce, and pass on these traits to their offspring, leading to a change in the gene pool over generations.
Which habitat would a plant be best adapted for if it can go for long periods without rain?
A plant that can go for long periods without rain would be best adapted for a desert habitat. Deserts typically have low precipitation levels and plants in these habitats have evolved special adaptations to store water and survive in arid conditions.
Charles Darwin's theory of evolution by natural selection related to the origin of structural and physiological adaptations because : Natural selection is when a certain organism adapts to its environment changes . For example , The Box Jellyfish has been existing befor the Dinasours which eventually helps us understand that it adapted to the changes in its environment in order for it to not extinct . It might have become the predator of its habitat or used camouflage to survive .
How does Darwin's theory contrast with other theories?
First of all, Darwin's theory supports evolutionism instead of creationism (the mainly-religious belief that everything was created by God in the beginning).
Secondly, Darwin's theory contrasts Lamarck's because the latter thought that individuals belonging to a certain species could pass on to the nest generations features that they had acquired during their life, while the former states that only the ones with the best features survive (struggle for life), thus following generations will present those features
How does natural selection predict a gradualistic mode of evolution?
Gradualism isn't a prediction of natural selection, but of our understanding the mechanisms that produce reproductive variation. Natural selection makes predictions about allele frequencies in populations and reproductive fitness.
What term refers to such phenomenon of evolving different adaptive forms from ancestral species?
The term that refers to the phenomenon of evolving different adaptive forms from ancestral species is called divergent evolution. This occurs when two or more related species become increasingly different over time due to adapting to different environments or ecological niches.
One key feature of viruses that is not found in cells is the lack of a cellular structure or organelles. Viruses are composed of genetic material (DNA or RNA) surrounded by a protein coat, whereas cells have a complex structure with membrane-bound organelles.
Which of Lamarks ideas turned out to be true?
One aspect of Lamarck's ideas that has some support is the concept of use and disuse, where organisms can modify their traits based on environmental demands. This idea is seen in some cases of phenotypic plasticity. However, his theory of inheritance of acquired traits (the idea that changes acquired during an organism's lifetime can be passed on to offspring) has been largely disproven by the field of genetics.
What is malthus theory on evolution?
I'm not sure Thomas Malthus had any theory pertaining to "evolution," strictly.
Malthus was rather the prophet of "overpopulation." He put forward the idea that, if human populations kept reproducing, eventually we would crowd the world and create an ecological disaster.
Find one example of convergent evolution among the Caminalcules?
One example of convergent evolution among the Caminalcules is the evolution of leaf-like structures in different lineages that have adapted to a similar environment. Despite starting from different ancestral forms, these organisms have independently evolved leaf-like structures to maximize surface area for photosynthesis, showing convergent evolution.
Reptiles are thought to have developed after the evolution of an amniotic egg, which allowed them to reproduce successfully on land without the risk of the egg drying out. This adaptation was a key factor in their ability to transition from an aquatic environment to a terrestrial one.
The effects of stabilizing directional and disruptive selection on variations in a trait over time?
Let us use tallness in men and women as our example.
In stabilizing selection a normal distribution of heights would be expected as the selective environment would not select against having all variants present in the population.
In directional selection you would see men and women getting increasingly taller ( or, perhaps shorter ) as natural selection selected the variants that were more reproductively successful in the immediate environment. ( say women's mate choice went into overdrive for tall men )
Disruptive selection is the distribution of traits that are at either tail of the distribution. Both short and tall people are represented, but no intermediates. These two dichotomous traits are seen in nature when one species feeds on two different food sources in the same area. Rather like small and large beaked birds. How humans could go through disruptive selection I leave to your analysis.
Fads can influence popular culture, consumer behavior, and social norms. They can reflect current trends and attitudes within a society, serving as a way for individuals to express their identity and connect with others who share similar interests. Additionally, fads can drive economic activity and innovation in industries like fashion, entertainment, and technology.
Does development repeat evolution?
Not really. The phrase you are referring to is this. ' Ontogeny recapitulates phylogeny. '
Or, as you say, development repeats evolution. A reference to organisms going through all the ancestral evolutionary changes in their development. Which they don't. For instance, human foetuses do not have gill slits as fish do not have them. Both have pharyngeal pouches that develop into gills in fish and other jaw and throat parts in humans. So, you could more truly say, ' ontogeny creates phylogeny. '
What is the radiant evolution in Darwin's theory?
The concept of "radiant evolution" does not exist in Darwin's theory of evolution by natural selection. Darwin's theory emphasizes the process of natural selection acting on heritable traits within a population, leading to changes in the frequency of traits over generations. This process results in the gradual adaptation of organisms to their environments.
What is the core of evolution?
If you are referring to the central notions of evolutionary theory in biology, then this "core" can be summarized in a few simple theses:
1. That life forms reproduce with variation.
2. That variations compete for resources.
3. That this competition affects the rates of spread of inherited traits throughout the population gene pool.
4. That all life we know shares a last universal common ancestor, and has derived from that ancestor via the process described in the first three points.