Which statement about the Cambrian period is true? The first multicellular life appeared. Large land mammals evolved. Multicellular life was probably limited to aquatic environment. Oxygen concentrations were extremely low. It marks the end of the Paleozoic era.

Q: What factors are necessary for fossils to occur? I. Abundant Members II. Exist for a long time III.…

A: Introduction A fossil is preserved remains impression of any once-living thing from a past…

Q: Scientists who study forms of marine life that lived more than200 million years ago usually obtain…

A: Scientists who study forms of marine life that lived more than 200 million years ago usually obtain…

Q: What triggered the Cambrian explosion that started 541 million years ago? All of the above O Higher…

A: Cambrian explosion refers to an event that occurred in the Cambrian period about 541 million years…

Q: Detail one of the historical periods (pre-Cambrian, Cambrian, or post-Cambrian) of animal kingdom…

A: The Geologic Time Scale (GTS) is a system of chronological arrangement or sequence of geologic…

Q: Which statement is true about fossilization? (A) (B) (C) (D) Only animals with backbones…

A: Fossilization is the process of preserving plant and animal remains over a period of time by means…

Q: Using tables 2.1 and 2.2 as references, fill out the following table. The first item is given as an…

A: Geological time scale Geological time scale is a representation of Earth's history.

Q: Which fossil layer is the youngest (name the geological period)?

A: The Cenozoic fossil layer is the youngest among the three layer.

Q: Euparkeria lived during which time period * O Ordovician O Triassic O Cretaceous Paleocene Jurassic

A: There are different areas that are divided on the basis of life and the existence of different…

Q: Neanderthals and Denisovans split approximately 530,000 years ago. 430,000 years ago. 400,00 years…

A: Answer is 3rd option

Q: The Cambrian Explosion occurred approximately 542 million years ago. During the Cambrian, what…

A: Cambrian period refers to the initial geological period of the Palaeozoic Era as well as Phanerozoic…

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: What kind of community interaction encouraged the Cambrian Explosion and contributed to…

A: The Cambrian Explosion is most significant in the history of evolution because it marks the sudden…

Q: Colonization of Land The Cambrian explosion Flowering plants Endosymbiosis Origin of Reptiles First…

A: Introduction : The Geologic Time Scale divides the Earth's history into four…

Q: The Cambrian explosion is a conundrum: how can the long prior history of the phyla, revealed by…

A: Evolution is change in the heritable qualities of natural populaces over progressive ages. These…

Q: Which of the following statements is incorrect in the context of fossilization? Minerals dissolved…

A: The process in which part or whole of animal or plant is being preserved in hard form is known as…

Q: Event How Long Ago? # Organisms Extinet Causes Cretaceous

A: Cretaceous extinction :  Cretaceous extinction took place about 66 millions ago . Organisms which…

Q: On your way to the zoo, you happen to encounter agroup of whites who seem not to be well vast with…

A: The Cambrian Period marks an important point in the history of life on Earth; it is the time when…

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: The current geological era is the ________.   Question 32 options:   Cambrian   Paleozoic…

A:

Q: The Cambrian Explosion occurred due to the widespread adoption of bilateral symmetry and the…

A: INTRODUCTION The Cambrian explosion or Cambrian radiation was an occasion approximately 541 million…

Q: All of the following have been suggested as triggers for the Cambrian radiation of complex metazoans…

A: Metazoans are sponges with no digestive system, nervous system, or true tissues. They are sessile…

Q: Which era is furthest in the past? O A. Cenozoic O B. Mesozoic O C. Paleozoic O D. Precambrian

A: According to the timeline of the evolutionary history of life, all present-day organisms have been…

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: What is the "Cambrian Explosion" and why is it significant?

A: The Cambrian period is the first period of the Paleozoic era and started around 542 mya. This period…

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: The time of greatest evolutionary diversification in the history of life occurred during the (a)…

A: Introduction  Environment plays a major role in the diversification of organisms. For example, if we…

Q: Below are some key events that took place during the long history of life on Earth. Arrange them in…

A: Constant change has characterized earth since its beginning some 4.5 billion years ago. life…

Q: Which of these events occurred in the Mesozoic era? First mammals First cyanobacteria First bacteria…

A: Mesozoic era has three periods cretaceous, Jurassic and Triassic periods. It is the age of reptiles.

Q: All of the following are possible explanations for the dramatic diversification of early animals…

A: The Cambrian explosion is one of the important evolutionary periods which is characterized by the…

Q: Which of the following geologic and biologic events defined the Carboniferous period?   The age of…

A: The Carboniferous Period lasted from about 359.2 to 299 million years ago* during the late Paleozoic…

Q: Equater Permian - 225 million years ago Triassic - 200 million years ago Jurassic - 135 million…

A: Introduction Twenty million years ago the Indian and Asian continental plates clashed and pushed up…

Q: Which of the following events did NOT occur during thePrecambrian?a. Formation of the ozone layerb.…

A: Introduction The Precambrian Period, which predates the current Phanerozoic Eon, is the earliest…

Q: Which fossil layer is the oldest (name the geological period)?

A: When geologists study 3 rock layers (and their fossils), there is a good chance that the upper layer…

Q: DIRECTIONS: Examine the illustrations of the marine organisms shown below whose fossils make up part…

A: * Darwin said that the Fossils records provide evidence that the living organisms evolved from many…

Q: Most of the ATP created during aerobic cellular respiration occurs along the cristae of the…

A: The aerobic cellular respiration involves oxidation of glucose to release energy in the form of ATP.…

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: Period was of unique importance to all ause during this Period aquatic vertebrates, like lobe finned…

A: Answer. Geological time scale is a chronological sequence of geologic and evolutionary events…

Q: Fossils show that dinosaurs originated between 200 and 250 million  years ago. Would you expect the…

A: Earth is divided into land part and ocean part. A huge large chunk of land is present later around…

Q: ldest in a given strata and why?

A: Fossil is any preserved remains, impression, or trace of any once-living thing from a past…

Q: Explain why mammal jawbones may have shifted to being a single solid bone from multiple bones.…

A: The evolution of the jaw is one of the most significant evolution in vertebrate history.

Q: The Mesozoic Era is referred to as the: * O Age of Ages Age of Reptiles O Age of Arthropods O Age of…

A: Biodiversity is the which describes the different varieties of organisms or living forms on the…

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: plutionary history of the dinosaurs up u Cambrian Mesozoic Paleozoic Cenozoic

A: Permian Triassic extinction event was called great dying event. In this era 90% of life in the…

Q: Which of the following shows the correct sequence of periods in the Mesozoic era: a) Triassic,…

A: Evolution is a change in species and organisms that are inheritable and can be transferred from…

Q: A. Direction: Choose the letter of the correct answer and write the letter only on the space…

A: 1. Answer of question 1 is right 2.Answer of question 2 is wrong cenozoic era is the age of mammals…

Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.