The older morphological methods were, in many cases, shown to be wrong because there was no real evolutionary connection. And in other instances the evolutionary connection was shown for organisms that were morphologically quite dissimilar.
Because of the similarities of the organisms.
It changes the classification system
meep
This is the fundamental premise of the Theory of Evolution by Natural Selection; the environment has a fundamental impact on the adaptations and evolution of organisms. The environment "selects" for those specimens that survive to have more offspring. Those animals that cannot survive are selected against.
The word "evolution" means "change". The Theory of Evolution is concerned with change among living things, animals and plants. Such change does not affect climate in any significant way. Earth is also evolving. The tectonic plates are moving; volcanic action is changing the face of the Earth, creating new islands, changing the topography. These changes---the evolution of Earth---do affect climate.
it moves scientific knowledge forward
Cyanobacteria photosynthesised, which meant that they released oxygen. This was the key to the evolution of eukaryote cells that aerobically respired. From their evolution, the O2 levels in the atmosphere was able to increase; this is why we eventually evolved.
Mutation is one of the mechanism by which new alleles enter the population gene pool. Evolution is often defined as the changing of allele frequencies in population gene pools. A mutation could change the frequency of a particular allele from zero to non-zero.
By it's definition. Evolution is the change in allele frequency over time in a population of organisms. All living things evolve by this definition.
No Darwin's theory was not directly linked to classification .
Mutation can serve up the raw variation that natural selection selects from, thus alleles are changed over time in populations of organisms; evolution.
This is the fundamental premise of the Theory of Evolution by Natural Selection; the environment has a fundamental impact on the adaptations and evolution of organisms. The environment "selects" for those specimens that survive to have more offspring. Those animals that cannot survive are selected against.
what affect tectonics have on evolution of new spiecies
Evolution is the change of allele frequency in a population of organisms. So, for a characteristic to affect evolution it must be heritable, genetically so, it must be selected for, or be the result of recombination processes and it must be in the germ line where it is passed to future generation of, hopefully, reproductively successful organisms who leave enough decedents to change the allele frequency in the populations gene pool over time.
The term coevolution (affect) is used to describe cases where two (or more) species reciprocally affect each other's evolution. So for example, an evolutionary change in the morphology of a plant, might affect the morphology of an herbivore that eats the plant, which in turn might affect the evolution of the plant, which might affect the evolution of the herbivore and so on.
yes because of the chambers the circulation of the blood is classified into single circut circulation & double circut circulation.
how changes in the environment affect a community of organisms
No
Speciation adds to biodiversity. Hence it affect the evolution of best suited forms to come up.
Look around you at the products of artificial selection. From alpaca tom wheat man has ordered the evolution of these organisms to suit his needs. Then there is habitat destruction where the migration of humans all over the earth has put a great selection pressure on organisms in adapting to human presence. Not all do and some are extinct from human migrations into their ranges and that is part of evolution to. Then there is climate change which will put great selection pressure on all the organisms of the earth. Some populations will have the variations needed to adapt to a warming earth and these populations will have individuals selected and thus evolve into new forms in the coming years.