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

Q: In which probable stage of physical and chemical evolution of life were gaseous oxygen and water…

A: Earth was formed some 4.6 billion years ago from the sun due to the continuous bombardment of huge…

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: Which organisms came and went during the Mesozoic era?

A: MESOZOIC ERA:- It is the era when the conifers, reptiles, dinosaurs were present in plenty 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: Was Archaeopteryx the firstbird?

A: Archaeopteryx is a fossil. This is an extinct species; it does not exist anymore. The fossil was…

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: How did the researchers use the DNA of living sponges to make conclusions about events occurring…

A: Answer- Every organism in a particular species have 99 percent same DNA sequence. Even among…

Q: How did Paleozoic life diversify during the Ordovician, Silurian,Devonian, Carboniferous, and…

A: Evolution is the change in the characteristics of a species over several generations and relies on…

Q: Was there molecular oxygen in the earth's primitive atmosphere? How has that molecule become…

A: Oxygen is one of the most important molecules or elements for all living organisms. It is…

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: At the end of which geological time period did the Starfish become extinct?

A: Biodiversity is diversity of various living organisms on the planet that it contains different types…

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: 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: 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: 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: Why will the fossil record always be incomplete?

A: FOSSIL : Fossil record give the evidence for any particular species that lived in the past period of…

Q: How did the Paleozoic era end?

A: Paleozoic era is the earliest era that has occurred in the Phanerozoic eon. It is the largest of all…

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: 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: How would the appearance of protocells have represented a key step in the origin of life?

A: Introduction  Origin of life on earth can be traced back to 3.4 billion years ago and as we now know…

Q: Which of the following was probably the least important factorin bringing about the Cambrian…

A: The Cambrian explosion is also known as the Cambrian radiation. The Cambrian Period existed…

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: Explain what significant events happened during the Five major extinction events between the late…

A: An extinction event (also recognized as a mass extinction) is a large-scale and sudden loss of…

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: Why are all of the fossil taxa from the Pliocene in this module called hominins?

A: Fossils are the preserved remains of plants and animals that were buried beneath ancient oceans,…

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: In what important ways did invertebrate life change between Ordovician time and Devonian time?

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

Q: Adaptive radiation

A: Evolution evolution is a process by which organisms adapt and grow to serve better in their natural…

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: Could the First Biological Molecules Have Formed NearVolcanoes on Early Earth?

A: In 1953, Stanley Miller conducted an experiment in the laboratory of Harold Urey to understand the…

Q: D Question 4 Which mass extinction led to the disappearance of the dinosaurs? O Triassic O…

A: The recurrent rise and disintegration of ice sheets and glaciers driven by the Milankovitch cycles,…

Q: What is the relationship among eons,epochs and periodsbof geologic time scale? Explain

A: The geologic time scale splits the earth's evolution into periods depending on the types of life…

Q: Which event in Earth’s historyeventually lead to the evolution of multicellular lifeforms?

A: The process of evolution of multicellular life from simpler, unicellular microbes was an important…

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 long is the time span between the appearance of free atmospheric oxygen and evidence of complex…

A: The fossil studies help in understanding the formation of life forms on the earth. The various time…

Q: WHAT IS MASS EXTINCTION? HOW DID MASS EXTINCTION EVENTS INFLUENCE EARTH'S HISTORY?

A: Extinction is the termination of a kind of organism or of a group of kinds, usually a species.

Q: What are the divisions of the geologic time scale?

A: Paleontology is the study of prehistoric life using fossil evidence or ancient sediments. This helps…

Q: What patterns in the fossil record would support that organisms have evolved?

A: Fossils: Fossils are considered to be the remains or the traces of the organism's activity that are…