WHAT HAPPENED IN THE 6 MASS EXTINCTIONS? Event How Long Ago? # Organisms Extinct Causes Cretaceous Extinction Triassic Permian Devonian Ordovician

Q: The ancestral protist common ancestor of all animals lived approximately million years ago. 800 600…

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Q: What are adaptation

A: Adaptations are defined as any heritable trait which helps any organism to have a survival advantage…

Q: What seems to be a common occurrence with all mass extinction events? Rising CO2 Rising water pH…

A: Introduction  The word "extinction" refers to the end of a particular type of organism or a set of…

Q: Geologic changes often accompany mass extinction of life forms. Why do you think this is true?

A: Introduction:- To understand this question first we need to know what is mass extinction and major…

Q: What is a transitional fossil? Transitional fossils were poorly adapted to their environments. O…

A: Introduction - Any preserved remains, impression, or trace of any once-living thing from a previous…

Q: Many fossils existed in one layer of rock, but not in others from different time periods and this…

A: A fossil is the mineralized partial or entire shape of an organism, or of an organism's pastime,…

Q: Which term refers to the evolution of similar traits in distantly related species? coevolution…

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: The Lower Paleolithic period consists of the Oldowan and Mousterian stone tool traditions. Group of…

A: Oldowan tools were used during the Lower Paleolithic period but the Mousterian stone tool traditions…

Q: The Cenozoic Era As you do the lab, fill in the last two columns for the Paleocene through the…

A: Introduction Evolution is the process by which different species are evolved over time in response…

Q: One of the biggest puzzles for modern evolutionary biologists is the rate of adaptive radiation that…

A: INTRODUCTION Adaptive radiation The period where there is increased biodiversity and speciation is…

Q: The great apes made their first appearance in the fossil record between 23 and 2.6 MYA, which:…

A: The question is asking us to identify which geological period corresponds to the time frame of 23 to…

Q: Which of the following geologic periods is not part of the Paleozoic Era? the Carboniferous Period…

A: The objective of the question is to identify which of the given geologic periods does not belong to…

Q: The geological record indicates that over the course of the last 510 million years, the Earth has…

A: It is a chronological sequence or time line of geologic as well as evolutionary events that includes…

Q: The Cenozoic Era is often referred to as the "Age of Mamm What primary geological and evolutionary…

A: The four eras are Precambrian, Paleozoic, Mesozoic, and Cenozoic. Prominent events that happened in…

Q: What argument convinced most scientists in the 1800s that Earth was more than 6,000 years old?…

A: Fossils are the remains of the organisms that were present on the earth in the past.

Q: Which of the following is believed to be common among all mass extinction events?     the type of…

A: Ans- significant change in the global climate

Q: The Precambrian is characterized by several major evolutionary milestones. Which of the following is…

A: The great majority of Earth's history occurs during the Precambrian period, which began with the…

Q: ''Cambrian Explosion'' What contributed to this explosion of life? What were Earth conditions like…

A: Cambrian explosion was the rapid and unparalleled rise of the organisms at the beginning of the…

Q: DATA ANALYSIS Use the data in Figure 2 to complete the table. Modern- Evidence from Theropods…

A: Theropoda, whose members are known as theropods, is a dinosaur clade that is characterized by hollow…

Q: 31) How Fossils are Made YEARS For an organism to become the conditions have to and be or animals…

A: Evolution in biology can be mostly simply described as descent with modifications, which…

Q: creationism?

A: Creationism At a broad level, a Creationist is someone who believes in a god who is absolute creator…

Q: All living organisms use DNA and RNA as their genetic code. Humans and roundworms, in fact, have 25%…

A: Evolution is defined as the change in trait of an individual in a species over a period of time.

Q: Which of the following organisms would be most likely to fossilize? a rare flower O an abundant…

A: Fossils are the remain or traces of the dead plants and animals that have been preserved by the…

Q: Why is the study of biogeography an important tool in explaining how species have evolved? * It…

A: Evolution is the phenomenon of the development of inheritable changes in an organism over a period…

Q: Which of these sentences states an opinion? O F. Paleontologists have exciting jobs. O G. Fernando…

A: The opinion refers to the view or judgment formed by a person about something. It does not have to…

Q: The appearance of the first hominoids dates to the ___________ period. Triassic Jurassic Cretaceous…

A: A hominid refers to a group of human and human-like apes which belongs to the Hominidae family. The…

Q: . One of the explanations for the diversity seen in the fossils corresponding to the Cambrian…

A: The adaptations that arose within the Cambrian were mainly for cover and predation. If one animal…

Q: List and name of one of the more notable\ well-known plant and one animal that went extinct in the…

A: The Cretaceous- paleogene extinction basically  occurred about 66 million years ago. This was a…

Q: You are examining the fossil record and notice a dramatic decrease in species diversity that seems…

A: A fossil is defined as the preserved remains or impression of animals or plants from a past…

Q: Which of these lists is in the correct order, starting at 550 mya to 50 mya: Cambrian explosion,…

A: The correct list is:Cambrian explosion, multicellular organisms first appear, radiation of reptiles,…

Q: 5. The Mesozoic Era extended over which of the following time periods in the fossil record? A. the…

A: Answer - B. The age of reptiles", from 251 million years ago to 65 million years ago.

Q: Question 5: Give a brief description of the evolutionary changes that occurred throughout geologic…

A: A phylogenetic tree is a diagram that delineates the connections between a few species or groups of…

Q: Relative-Age Dating Absolute-Age Dating Younger 440 mya 480 mya 520 mya 545 mya Older 2. The dates…

A: Ans: C: Igneous rock layers

Q: What did Wegener call the giant land million years ago? Pangaea O Big Ol' Continent Gigantia…

A: The supercontinent began to break apart about 200 million years ago, during the Early Jurassic Epoch…

Q: Given the life-style we live today, what pre-historic period gives us the ability to heat our homes,…

A: the ability to heat our homes, run our cars, and have a comfortable life was the ability of humans…

Q: Humans have been around for only about years of the planet's 3.8 billion years in existence. 90,000…

A: Approximately 6 million years ago, a primate group known as Ardipithecus formed the first vital…

Q: How is a mass extinction event indicated in the Tree of Life? Significant gaps on the tree are…

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Q: Activity 1.3 Directions: Stu dy the Tree of Life on page 5 (Figure 1.3) to answer the following…

A: No matter how large or small an ecosystem is, it is essential to all life. Ecosystems rely on all of…

Q: The term Anthropocene implies that

A: Epoch, in general, termed as a very important period of time in history

Q: Vestigial structures are: structures that were helpful to our ancestors but do not serve any useful…

A: In the time of evolutionary period different organisms evolve, as well as extinct from the earth.…

Q: The fossil record shows that over time:

A: Fossils are the remaining parts or traces of old life that have been preserved by natural cycles,…

Q: In land mammals, the pelvic girdle is the point where the leg bones attach to the rest of the…

A: Introduction:- Pelvis, also called bony pelvis or pelvic girdle, in human anatomy, a complex of…

Q: QUESTION 3 1. Which of these was the cause of the 5th mass extinction that caused the dinosaurs to…

A: Introduction  Extinction is the process by which a particular species, or group of organisms, ceases…

Q: Scientists find evidence of a large meteor impact on the coast of the Yucatán Peninsula in Mexico.…

A: BASIC INFORMATION  EVOLUTION The theory of evolution was first given by the Jean Baptist de Lamark.…

Q: n Darwin's mind, the origin of species is inextricably linked to the extinction of species. Why? O…

A: Introduction Extinction is the destruction of a type of organism or a group of organisms, most…