-How long is the time span between the appearance of free atmospheric oxygen and evidence of complex (multicellular) forms? -How much time is there between complex forms and the Cambrian Explosion?

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 major climatic and biological events happened during thePleistocene?

A: The environment throughout the Pleistocene was dynamic, changing dramatically in response to climate…

Q: In what way was the evolution of eukaryotic cells linked to the increase in the oxygen concentration…

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

Q: what does the Cambrian “explosion” refer

A: The early phase of the Paleozoic era that started 541 million years ago and lasted up to 485.4…

Q: Discuss the evidence-based reasons why it is being highly proposed that we are under the…

A: A branch of science which deals with the features of an area involving physical structures,…

Q: What is the term for bits of rock and dirt? O A. Mesozoic O B. Half-life O C. Sediment O D.…

A: An MCQ has been asked. Have to name a term for bits of rock and dirt.

Q: What is the correct order of appearance in the fossil record, starting with the earliest: eukaryotic…

A: They consist of eubacteria and archaebacteria. Bacteria are simple prokaryotic organisms which are…

Q: What is the “Cambrian explosion,” and why is it significant?

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

Q: The Precambrian (before Cambrian) time period includes many eons. This period of time includes the…

A: Answer. The Precambrian (before Cambrian) time period includes many eons. This period includes the…

Q: What types of organisms flourished in the Cambrian?

A: Evolution is the process of slow and gradual change over a period of time. There are different…

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: Describe the evolutionary significance of the Cambrian explosion.

A: Introduction  Cambrian explosion event was occurred nearly 541 million years ago during the Cambrian…

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: How is the layer of iridium used to tell the relative age of different rock strata and fossils?

A: Relative age is that the age of a rock layer compared to other layers. It is often determined by…

Q: Before the emergence of life of what gases was the earth's primitive atmosphere constituted?

A: the primitive atmosphere was reducing in nature it had little or no oxygen  it was rich in water…

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

A: The evidence is given below.

Q: Discuss three hypotheses, explaining the rise of Cambrian diversity and the decline of Ediacaran…

A: The Cambrian period extended from 542 to 488 Mya (million years ago). It is characterized by the…

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: What factors influenced the isotopic composition of oxygen in skeletons of marine organisms during…

A: The factors that influenced the isotopic composition of oxygen in the skeleton of marine organisms…

Q: Fossilized stromatolites(A) formed around deep-sea vents.(B) resemble structures formed by bacterial…

A: Stromatolites are the fossils formed about 3.5 billion years ago, they are the earliest fossils.…

Q: Do all organisms fossilize after death?

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

Q: 4. Give at least 2 major contributions of Cambrian explosion to evolution

A: 4. The Cambrian Period is significant in the evolution of life on Earth since it is when most of the…

Q: Cambrian explosion occurred?

A:

Q: Define - The Carboniferous period ?

A: The carboniferous or " carbon-bearing "    period  is the part of late paleozoic era , the fifth…

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: Which of the following is not a hypothesis used to describe the sudden change in the diversity of…

A: The term "Cambrian explosion" refers to a time when bilaterally symmetrical (bilaterian) animal…

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: Transitional Fossils: Which of the following is the corre sequence in the evolution of structures…

A: Vertebrate incursion from aquatic to terrestrial environments required a significant change in their…

Q: The animals body plans that emerged from the Cambrian Explosion were multi-cellular and…

A: Originally, geologists identified the start of the Cambrian Period as the first appearance of…

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: What caused the Cambrian explosion? Describe current hypotheses.

A: Cambrian explosion denotes the most significant event in the evolution or the history of life on…

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

A: Cambrian explosion, took place between 541 million and approximately 530 million years ago. This…

Q: If Marine communities dominated during the Early Paleozoic, why move to land? What would an…

A: Paleozoic era was a major interval of geologic time that began 541 million years ago and ended about…

Q: How did the presence of molecular oxygen in the atmosphere affect early life?

A: Life originated nearly 3.6 billion years ago in the deep ocean.  The first organisms to be evolved…

Q: Dorothia fossil Aperture:- Chambers:- Periphery:- Pores:- Proloculus:- Septum (last):- Shell:-…

A: Ediacara Biota represents a revolution in the evolution of life on Earth, reflecting the…

Q: Fossil A found closer to the surface compared to Fossil B. Which of the following conclusions can be…

A: Fossils are the remains or impressions of a prehistoric plant or animals embedded in a rock and…

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: What was the “Cambrian explosion” and how might you explain it?

A: Introduction  Cambrian explosion event was occurred nearly 541 million years ago during the Cambrian…

Q: During what era did pangs begin to break up

A: During what era did pangs begin to break up? Answer. B. Triassic

Q: what geology was occuring aroung the cambrian explosion that may have contributed to this…

A: Cambrian explosion occured around 541 million years ago.Cambrian period started after second great…

Q: How could the multicellular forms achieve such enormous diversity in only 20–50 million years?

A: The pioneer unicellular cell originated between 3.8 and 4 billion years ago. Diverse forms of living…

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: Briefly describe the distinguishing organisms and major biological events of the Ediacaran period…

A: Molecular systematics assists biologists in interpreting the fossil record in order to determine the…

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

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

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.