How does continental drift affect living organisms?
It causes climate change, which puts selective pressure on organisms. It causes changes in habitats, such as when large amounts of shallow marine habitat were lost in the formation of Pangaea.
What concept explains the evolution of complex eyes?
What concept explains the evolution of complex eyes? Complex eyes evolved through a series of steps that benefited the eyes. resemble structures formed by bacterial communities that are found today in some warm, shallow, salty bays. The oxygen revolution changed Earth's environment dramatically.
What type of speciation is continental drift?
' Allopatric speciation is thus speciation that occurs through geographic isolation of two populations or groups of populations. In this scenario, a population is split by some geographic barrier, such as a mountain range or river for terrestrial organisms, or a land mass for aquatic organisms.
Which of the following are consequences of continental drift?
What are the effects of continental drift? it alters the habitats organisms live in. Causes climate changes, promotes allopatric speciation, helps explain geographic distribution of extinct organisms.
How does continental drift explain the current distribution of species on Earth?
Continental drift can explain the current distribution of species because due to the plates shifting geography and climate, it changes the environment in which a species lives in which can cause extinctions and speciation. It can also explain many similar species on different mainlands.
How did Pangea affect animals?
As Pangea formed, the extent of shallow water habitats declined, and land barriers inhibited cold polar waters from circulating into the tropics. This is thought to have reduced dissolved oxygen levels in the warm water habitats that remained and contributed to the 95 percent reduction of diversity in marine species.
What is unique about evolution by means of artificial selection for example domestic dogs )?
Although all dogs are descendants of the wolf, the use of artificial selection has allowed humans to drastically alter the appearance of dogs. For centuries, dogs have been bred for various desired characteristics, leading to the creation of a wide range of dogs, from the tiny Chihuahua to the massive Great Dane.
How do evolutionary biologists think that complex traits like eyes evolved?
How do evolutionary biologists think that complex eyes evolved? Eyes evolved in gradual steps, each of which was fully functional and adaptive in improving visual acuity. originally selected for one function but later co-opted for a different function.
How does continental drift and evolution impact the species we find in different parts of the world?
Continental drift allowed for the isolation of the same species in very different environments, leading to different paths of evolutionary adaptations that, over long periods of time, created a number of different species.
What is continental drift theory explain?
The theory of continental drift is most associated with the scientist Alfred Wegener. In the early 20th century, Wegener published a paper explaining his theory that the continental landmasses were “drifting” across the Earth, sometimes plowing through oceans and into each other.
How might Australia breaking away from Pangea have led to new species forming?
As continents broke apart from Pangaea, species got separated by seas and oceans and speciation occurred. Individuals that were once able to interbreed were reproductively isolated from one another and eventually acquired adaptations that made them incompatible. This drove evolution by creating new species.
What is unique about evolution by means of artificial selection?
Artificial selection is distinct from natural selection in that it describes selection applied by humans in order to produce genetic change. When artificial selection is imposed, the trait or traits being selected are known, whereas with natural selection they have to be inferred.
Why is the domestication of plants and animals seen as a form of artificial selection as opposed to natural selection?
Why is the domestication of plants and animals seen as a form of artificial selection as opposed to natural selection? Humans selected traits among species that benefited humans rather than the wild species of plants and animals.
What are the causes of the evolution of unique traits?
Random variation, heredity and natural selection are key mechanisms of evolution. Individuals with features or traits that function well in their local environment will be more likely to survive, passing on their genes to their offspring.
Why do organisms have different features characteristics unique to one another?
While all cells within the body of a multicellular organism contain the same genetic sequence information, each lineage has undergone specialisations to become a skin cell, hair cell, heart cell and so forth. These phenotypic differences are inherited from mother cells to daughter cells.
How did Wegener explain why fossils of land animals were found on continents that are across oceans from one another?
How did Wegener explain why fossils of land animals were found on continents that are across oceans from one another? – Animals evolved separately on each continent.
Which explanation provides support for continental drift theory?
Which explanation provides support for continental drift theory? Coal fields match up across continents. What name did Wegener give to the single large landmass composed of all continents? What is the name of the theory that explains why mountain ranges in Africa and South America line up?
What do you understand by the theory of continental drift discuss the prominent evidence in its support?
According to the theory, all the continents formed a single continental mass- Pangea and mega ocean- Panthalassa surrounded it. Around 200 million years ago Pangaea started splitting and broke down into two large continental masses as Laurasia and Gondwanaland forming the northern and southern components respectively.
How does artificial selection work with animals?
Artificial selection involves mating two individuals within a species that have the traits desired for the offspring. Unlike natural selection, artificial selection isn't random and is controlled by the desires of humans.
How does artificial selection modify the variation in a species?
Artificial selection is the process by which humans choose individual organisms with certain phenotypic trait values for breeding. If there is additive genetic variance for the selected trait, it will respond to the selection, that is, the trait will evolve.
Why is the domestication of plants and animals seen as a form of artificial selection as opposed to natural selection quizlet?
Why is the domestication of plants and animals seen as a form of artificial selection as opposed to natural selection? Humans selected traits among species that benefited humans rather than the wild species of plants and animals.
How do you think the domestication of wild animals and plants is tied to the development of human civilization?
How do you think the domestication of wild animals and plants is tied to the development of human civilization? Human changed from a hunter-gatherer society to settling in farming villages. … The Incas relied on trade with Andean cultures for non-agricultural goods.
How did different animals evolve?
All organisms, including humans, evolve over time. Evolution occurs through natural selection, and is a force that has shaped every organism living today.
Which of the following are unique features of living organisms?
Unique features of living organisms include reproduction, movement, cellular stucture, growth, response to stimuli and excretion.
How did Wegener explain why fossils of land animals are found on continents that are across oceans from one another Brainly?
How did Wegener explain why fossils of land animals were found on continents that are across oceans from one another? – Animals evolved separately on each continent.
Why was Wegener interested in finding fossils of the same plants and animals on two different continents?
Why was Wegener interested in finding fossils of the same plants and animals on two different continents? He reasoned that if the connivers had once been joined, fossils of the same plants and animals should be found in areas that had once been connected. What fossil was found in South America and Western Africa?
How did Wegener explain why fossils of land animals were found on continents that are across oceans from one?
How did Wegener explain why fossils of land animals were found on continents that are across oceans from one another? – Animals evolved separately on each continent.
What are the 5 evidences of continental drift theory?
They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.
What is the conclusion of continental drift?
Wegener took the areas that had been covered by ice sheets and fitted them together around the south pole. HIS CONCLUSION – the continents were once part of a single larger continent that then split apart, drifting to their present positions over the last 300 million years.
What are two observations that supported the theory of continental drift?
The four pieces of evidence for the continental drift include continents fitting together like a puzzle, scattering ancient fossils, rocks, mountain ranges, and the old climatic zones' locations.