How Does Continental Drift Explain The Uniqueness Of Australian Fauna?

How Does Continental Drift Explain The Uniqueness Of Australian Fauna??

How does continental drift explain the uniqueness of Australian fauna? The subsequent separation of the southern continents formed an island of marsupials. … Currently the big island of Hawaii is thought to be over a hot spot which is why it is the only one of the seven large islands that has active volcanoes.

Which of the following best explains why it took so long to realize there was animal like life in the Precambrian?

Which of the following best explains why it took so long to realize there was animal-like life in the Precambrian? Animals from the late Precambrian had soft bodies. … There are fossils of animals in geological strata that are older than the Cambrian explosion.

How did the Cretaceous and Permian extinction affect the numbers of prey organisms?

How did the Cretaceous and Permian extinctions affect the numbers of prey organisms? After the Permian extinction the numbers or prey organisms increased then leveled off. … 96% of marine animal species became extinct in the Permian mass extinction at the end of the Paleozoic 252 million years ago.

What period had the greatest increase in the number of extant species?

The Cambrian Explosion of Animal Life. The Cambrian period occurring between approximately 542–488 million years ago marks the most rapid evolution of new animal phyla and animal diversity in Earth’s history.

What concept explains the evolution of complex?

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.

What would be the result of Earth’s unique atmosphere did not exist?

What would be the result if Earth’s unique atmosphere did not exist? Earth’s temperature would be more steady and habitable. We would receive less ultraviolet radiation from the Sun. We could expel a lot more toxic gases without any problem.

What development in animals created fossils that mark the Cambrian explosion?

What development in animals created fossils that mark the Cambrian explosion? Hard mineralized skeletons. What is preserved in the Burgess Shale?

Which of the following statements accurately describes the effect of the Permian and Cretaceous extinctions on the percentage of prey organisms in marine environments?

Which of the following statements accurately describes the effect of the Permian and Cretaceous extinctions on the percentage of prey organisms in marine environments? After both the Permian and Cretaceous extinctions the percentages of prey organisms decreased.

How does continental drift affect living organisms See Concept 25.4 page?

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.

Which killed off 95% of all living organisms?

The deadliest of all mass extinctions which killed off 95% of all living organisms was the Permian-Triassic.

What factor most likely causes the animals and plants of Australia to differ greatly from species in nearby Southeast Asia?

Which of the following is true regarding continental drift? India was a separate continent until forty-five million years ago. Which factor most likely caused animals and plants in India to differ greatly from species in nearby southeast Asia? Animals from the late Precambrian had soft bodies.

How does mass extinction in the biological history become advantageous to our existence today?

By removing so many species from their ecosystems in a short period of time mass extinctions reduce competition for resources and leave behind many vacant niches which surviving lineages can evolve into.

Which ocean ecosystem is most affected by waves and tides?

The ocean ecosystems impacted most by aerial exposure are those along coastlines and influenced by tides. These include salt marshes mudflats rocky shores and sandy shores. Many of the organisms that live in these areas are adapted to hold in their moisture for long periods of time.

How does evolution explain complex organs?

Our research suggests that new organs evolved by repurposing existing body parts. Over evolutionary time organs can evolve new structures and new functions that increase the fitness or reproductive success of the animal. … As they accumulate eventually complex biological structures can evolve.

What do complex organisms have that makes them different from simple organisms?

While simple organisms are made of one cell or many identical or very similar cells complex organisms have many different kinds of cells. In your body for example you have skin cells blood cells stomach cells and many other kinds of cells.

How can evolution explain the range of complexity of eyes in modern organisms?

How can evolution explain the range of complexity of eyes in modern organisms? In some cases a complex structure may have evolved from a simpler structure having the same basic function—a process of refinement. Give an example of evolutionary remodeling of an existing structure to a new function.

What would happen if the earth lost oxygen for 5 seconds?

If the world lost its oxygen for five seconds the earth would be an extremely dangerous place to live in. Due to the severe sunburn our inner ear would explode. The air pressure on the earth would drop 21 per cent and our ears would not get enough time to settle. … Now take a deep breath of oxygen.

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How does the atmosphere make Earth livable?

The atmosphere helps make Earth livable by providing gases for respiration being a shield against solar radiation and insulating the planet from extreme temperatures.

How does the atmosphere help make Earth livable quizlet?

Why is the atmosphere important? It is what makes the Earth livable it blocks some of the sun’s dangerous rays from reaching Earth. It traps heat making Earth a comfortable temperature and the oxygen within our atmosphere is essential for life.

What is Cambrian explosion briefly explain?

Cambrian explosion the unparalleled emergence of organisms between 541 million and approximately 530 million years ago at the beginning of the Cambrian Period. The event was characterized by the appearance of many of the major phyla (between 20 and 35) that make up modern animal life.

What makes the Cambrian Period unique?

The Cambrian period part of the Paleozoic era produced the most intense burst of evolution ever known. The Cambrian Explosion saw an incredible diversity of life emerge including many major animal groups alive today. Among them were the chordates to which vertebrates (animals with backbones) such as humans belong.

What adaptations appear in the fossils of the Cambrian explosion?

The adaptations that arose in the Cambrian were mainly for protection and predation. If one animal evolved a hard exoskeleton another would have to evolve better predation strategies to survive. Some evolutionary marvels like eyes brains and ears may have come out of such arms races.

Which of the following statements most accurately describes a difference between the current atmosphere and that of early Earth?

(Q 6) Which of the following statements most accurately describes a difference between the current atmosphere and that of early Earth? Compared to today early Earth had an atmosphere richer in gases released from volcanic eruptions.

What species went extinct in the first mass extinction?

The earliest known mass extinction the Ordovician Extinction took place at a time when most of the life on Earth lived in its seas. Its major casualties were marine invertebrates including brachiopods trilobites bivalves and corals many species from each of these groups went extinct during this time.

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In what period did birds reptiles and animals began reproducing on land?

The Triassic period from 252 million to 200 million years ago saw the rise of reptiles and the first dinosaurs. The Jurassic period from about 200 million to 145 million years ago ushered in birds and mammals.

How does continental drift relate to the evolution of organisms?

How does continental drift affect evolution? As continents broke apart from Pangaea species got separated by seas and oceans and speciation occurred. … This drove evolution by creating new species. Also as the continents drift they move into new climates.

What are some of the ways in which continental drift has affected the evolution of life?

Continental drift has caused mountains to build and climates to change. Species were spread out more and more distributed when landmasses collided and mountain ranges rose.

How are fossils significant to our study of biology?

Fossils are the preserved remains or traces of animals plants and other organisms from the past. Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today.

Which scientists have contributed to our knowledge of Earth’s age quizlet?

Geologists biologists and astronomers have all contributed to our knowledge of Earth’s age.”

What is a mass extinction quizlet?

Mass extinction definition. The dying out of a large number of species within a relatively short period of time.

When geologist referred to the Big Five What are they referring to?

When geologists refer to the “Big Five ” what are they referring to? The five largest mass extinctions in Earth’s history. The main causes of the disasters that cause mass extinctions seem to come either from above in the form of deadly asteroids or comets or from below in the form of extreme volcanic activity.

Which of the following best explains why animals and plants in India differ greatly from species in nearby Southeast Asia?

Which of the following best explains why animals and plants in India differ greatly from species in nearby Southeast Asia? The species diverged in an adaptive radiation. … India was a separate continent until 45 million years ago. India was a separate continent until 45 million years ago.

Why did it take so long to realize there was animal like life in the Precambrian?

Which of the following best explains why it took so long to realize there was animal-like life in the Precambrian? Animals from the late Precambrian had soft bodies. … There are fossils of animals in geological strata that are older than the Cambrian explosion.

What are worldwide and regional adaptive radiations?

Worldwide Adaptive Radiations. Mamas underwent an adaptive radiation after the extinction of terrestrial dinosaurs. Regional Adaptive Radiations. Occurs when organisms colonize new environments with little competition.

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