Which of the following was probably the least important factorin bringing about the Cambrian explosion?(A) the emergence of predator-prey relationships(B) an increase in the concentration of atmospheric oxygen(C) the movement of animals onto land(D) the origin of Hox genes

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: 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: 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 era did Australopithecus afarensis evolve?

A: It is required to identify the era in which Australopithecus afarensis evolve.

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: 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: For about how many years of geological time have the dinosours existed on earth?? Did dinosours…

A: Geological time scale divided the prehistoric earth into four eras based on the the environmental…

Q: The fossil cephalopod has a calcareous shell and a squid-like body that would extend out of the…

A: Anatomy is the branch of biology that deals with the study of the structure of organisms and their…

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: 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: Why was the Mesozoic era extinction significant to the history of mammals? a. As photosynthesis…

A: The Mesozoic era is referred to as the age of the dinosaurs which were dominant during this period…

Q: Four of the following statements about fossils found on the island of Flores are true. Which one is…

A: Fossil found on the island of Flores were scientifically named Homo floresiensis.  They were…

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: Why is animal evolution during the early Cambrian referred to as an “explosion”?

A: The evolution during the early Cambrian referred to as an explosion. Here we will discuss why it is…

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: Your age-dating put the age of the rocks you are examining in the early Devonian period. Because of…

A: A phylogeny is a hypothetical relationship between groups of animals that are represented by a…

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

A: The invasion of vertebrates from the water(aquatic) to the land(terrestrial) needed a huge…

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: 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: Did dinosaurs and humans ever exist at the same time?

A: Homo habilis, which existed between 2.4 and 1.4 mya in Eastern and Southern Africa, is among the…

Q: Which position would indicate an organism with a bony skeleton? Which position would indicate the…

A: Question - 1- Which position would indicate an organism with a bony skeleton? Question - 2 - Which…

Q: what do fossils tell us about the evolutionary history of the animal kingdom?

A: The traces or remains of an organism that once lived on Earth is termed as fossil. Fossils somehow…

Q: Which of the following groups of early-diverging animals is comprised of two layers of cells that…

A: External epidermis and internal gastrodermis have 2 major cell layers.

Q: If you were to build a phylogenetic tree of living animals, which of the following derived…

A: Introduction :- Deuterostomes are an animal clade that undergoes deuterostomy during embryonic…

Q: What valuable information can an archaeologist gain from understanding the connections between…

A: Archeology gives us the chance to find about past culture through the investigation of artifacts,…

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 is it that most, if not all, of the extant animal phyla today evolved during the Cambrian period…

A: To date, there has been no other evolutionary explosion as strong as the Cambrian period in the…

Q: Fossil records had given scientists a glimpse of the past, to what extent these fossil records…

A: Fossils are the preserved remains or traces of animals, plants, and other organisms from the past.…

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: -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: 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: Which of the following periods is the earliest during which animals may have appeared? a. Ordovician…

A: Extinction aids the evolution of life by making way for new species. The number of species going…

Q: factor in the rapid speciation of animals seen during this time. What findings in the fossil record…

A:

Q: In the late 1800's, a biologist studying animal embryos coined the phrase, "ontogeny recapitulates…

A: “Ontogeny recapitulates phylogeny” is a familiar phrase coined by Ernst Hackel during the period of…

Q: Put the following milestones in animal evolution in orderfrom oldest to most recent: (a) origin of…

A: The origin of life or abiogenesis states about the simple life forms that are risen from 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.