Describe a scientific hypothesis to explain the mass extinction of dinosaurs and many other organisms at the end of the Cretaceous Period.

Q: Explain about fossil record

A: A group of fossils that have been analyzed, after which they have been sorted into chronological and…

Q: The extinction of dinosaurs left gaps in the early ecosystems on earth. Explain briefly the…

A: Evolution is change in the species over a period of time.

Q: Different species of lizard living in similar environments have similar characteristics. This is a…

A: Because being present in the similar type of environment , the environment poses the similar kind of…

Q: The term “Cambrian explosion” refers to (a) an increase in biodiversity. (b) a mass extinction. (c)…

A: Answer: Introduction: The Cambrian explosion or Cambrian radiation was an incident about 541 million…

Q: Lystrosaurus provided which type of evidence supporting continental drift? land features fossil…

A: As the ability to sequence the nucleotides that make up DNA has increased, the use of genes to…

Q: Write the era and period of each listed organism. Refer to geological time scale.

A: ERA PERIOD first vascular land plants Paleozoic   (ancient life forms) Ordovician jawed…

Q: what is meant by “mass extinctions.”

A: Mass extinction is the extinction of a large number of species within a relatively short period of…

Q: Ancient mammals became abundant during this period: a) Jurassic b) Triassic c) Carboniferous d)…

A: Mammals can be defined as the group of vertebrate animals  which constitutes  the class  of Mammalia…

Q: The bones of a bird’s wing are similar to the bones in a bat’s wing. This observation is an example…

A: Evolution can be defined as the unrolling of nature that brings about an orderly change from one…

Q: What type of data is primarily used to determine the existence and appearance of early animal…

A: Animals are multicellular eukaryotic organisms. They possess a well-defined growth pattern that…

Q: All lemur species live in ____ and their diversity is the result of _____ a. The American…

A: Introduction: The founder effect is one form of genetic drift. This is the phenomenon in which there…

Q: Give two lines of evidence supporting the asteroid impact hypothesis for the Cretaceous extinctions.

A: The evidence is given below.

Q: Explain how the broad evolutionary changes seen in the fossil recordare the cumulative result of…

A: Many geological changes on the Earth include the formation of mountains and islands after massive…

Q: The transitional fossil Tiktaalik shows a combination of traits consistent with the hypothesis that…

A: Fossil records of Tiktaalik date back to around 375 million years ago. They are a transition between…

Q: large reptiles that share an ancestor and lived millions of years ago. Dinosaurs are group however…

A: Birds are technically considered as reptiles for the similarities between both the groups.

Q: Mammal numbers, diversity, and size increased dramatically at the end of the Cretaceous because

A: At the end of Cretaceous period mass extinction of dinosaurs takes place most probably due to…

Q: A principle of biology is that all species (past and present) arerelated by an evolutionary history.…

A: Answer- Phylogeny is also called as evolutionary relationships.

Q: What are the importance of mass extinction over time with emphasis permian Triassic extinction.…

A: Permian mass extinction is considered a most devastating biotic event which caused the loss of…

Q: Most fossils ___.   have been formed by exposure to air   are found in sedimentary layers of rock…

A: A fossil is anything of past geological age which was preserved. A fossil could be anything like…

Q: E. Evidence from Biogeography Biogeography is the study of geographical distribution of fossils and…

A: Continental drift is a theory that explains the shift of continents position on the earth's surface.…

Q: The theory of evolution is supported by a large body of evidence. What is the first occurrence of…

A: The theory of evolution The theory proposes the idea that all species present are related and have…

Q: Briefly explain why Pangenesis theory is incorrect

A: The early concepts of heredity are blending inheritance, pangenesis, blending of acquired…

Q: Based on the figure below, what is the number of turnovers in stage B? D 34 24 16 4 Geological…

A: Species turnover is defined as the number of species in a specific geological age which pass over to…

Q: Describe one hypothesis that explains the extinction of large mammals in the late Pleistocene.

A: The Pleistocene, sometimes known as the Ice Age, is the most recent glaciation-filled period on…

Q: Fossils can be body parts of ancient organisms such as bones,shells,teeth or plant leaves

A: Fossils provide paleontological evidence of organic evolution.Fossiles are dead remains of hard…

Q: Describe one of the major extinction events during the Late Paleozoic or Mesozoic (include when it…

A: Description of the major extinction event occurred in late paleozoic Or medozoic era.

Q: Birds Non-Avian Dinosaurs Fish Wings

A: Solution  1) Non avian dinosaurs and birds  Are monophylatic groups A taxon is any group of…

Q: PLEASE HELPPP

A: The Cambrian Period marks a significant point in the history of life on Earth. During this time,…

Q: Adaptive radiation is when populations diverge from a common ancestor into new species,  each of…

A: Adaptive radiation/ convergence is a phenomenon in which populations can undergo two processes:-…

Q: Describe an example from the fossil record that showshow life has changed over time.

A: Evolution is the process of heritable change in the characteristics of an organism. Such changes…

Q: Use the scenario to answer the question. A fossil indicates that whales might have started out as…

A: There are many signs in a whale's anatomy that their ancestors lived on shore. Hippos and whales…

Q: Give the stratigraphic arrangement of rock layers as shown below, the circles represent places where…

A: The correct answer is option: B The therapsids are believed to be present between the Carboniferous…

Q: Using the phylogeny, which statement best explains the evolutionary relationship of birds and bats?…

A: Interestingly though bird and bat wings are analogous as wings as forelimb they are homologous. The…

Q: Cite and explain the factors that led to an enormous bloom of animal diversity in the Paleozoic era.

A: Paleozoic era began somewhere around 541 million years ago and ended around 252 million years. The…

Q: Describe how scientists use fossil records as evidence for Evolution

A: Evolution is defined as the change in the genetic composition of a population during successive…

Q: After the mass extinction that occurred 65 million years ago, mammals rapidly diversified to occupy…

A: Speciation is the process of formation of one or more species from an existing species. It is said…

Q: Feathers, which evolved from modified reptilian scales, show up in the fossil record at the end of…

A: Made from soft tissue, it is very rare to find the fossils of feathers as they cannot survive over a…

Q: Arrange these events in order of occurrence, with 1 being the earliest and 6 the most recent. First…

A: From the time earth came into existence, till now, our planet has gone through several changes.…

Q: First evidence of Woolly mammoths in North America Fish with both lungs and gills Extinction of non-…

A: The geologic time scale (GTS) is an arrangement of sequential dating that classifies geological…

Q: Scientists are examining the possible role of a large asteroid in the cretaceous mass extinction…

A: Introduction :  Small, airless rocky bodies revolving around the sun between the orbits of Mars and…

Q: example. Table 10: Some Important Events in Geologic Time Era Mesozoic Period Triassic Event Eon…

A: This table is based on the time line of genetics.  Various animals and plants came into existence…

Q: Archaic humans appeared as early as ___________ years ago. (a) 5 million (b) 1.2 million (c) 250,000…

A: A multitude of Homo species co-existed starting around half a million years ago, and they are lumped…

Q: Examine the image below. To which fossil primate taxonomic group did it belong?  During which…

A: During the course of evolution, humans and apes had a common ancestor. Both humans and apes ( which…

Q: The graph shows biological diversity through time, from the early Permian through the late Triassic.…

A: The earth's geological scale is divided into various eras starting with the formation of the earth…

Q: Discuss how excess carbon dioxide lead to a mass extinction in the Permian period.

A: A mass extinction event is when species disappear a lot quicker than they are replaced. This is…

Q: Describe the evidence for the cause of the Cretaceous–Paleogene (K–Pg) mass extinction.

A: the K–Pg extinction was caused by the impact of a massive comet or asteroid 10 to 15 km (6 to 9 mi)…

Paleontology

A branch of science concerning the scientific study of life from ancient times is known as paleontology. The scientists working on paleontology are known as paleontologists. Paleontologists collect the fossils of organisms from ancient times to classify them. The paleontologists also study the environment from ancient times to study the interactions between different organisms.