List the major events of the Precambrian supereon and of thePaleozoic, Mesozoic, and Cenozoic eras`

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: 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: List the four large time periods into which biologists divide the earth’s past

A: The geologic time scale (GTS) is a system of chronological dating that classifies geological strata…

Q: Table 1 Millions of Years Ago (Mya) Event First humans (genus Homo) The Origin of the Earth First…

A: According to astronomical research and geological evidence, scientists indicate the universe is…

Q: Researchers looking for fossils of the earliest life-forms face many hurdles. Explain why so few…

A: Fossils are the preserved remnants of ancient creatures or evidence of their remains. Fossils are…

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

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

Q: Which of the following eras in Earth's history is the longest? Precambrian Cenozoic Paleozoic…

A: A geological era divides eon into smaller unit of time. Geological era are further divided into…

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: Outline the major events and changes in species diversity duringthe Paleozoic, Mesozoic, and…

A: The genes are hereditary units of an organism that is transferred from one generation to the next.…

Q: In which era of the Geologic Time Scale are we currently living ir O Cenozoic O Mesozoic

A: 2nd answer is cenozoic

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: 1. The woolly mammoth lived from the Pliocene to the Holocene time period. Compare the temperature…

A: Answer: TEMPERATURE: It is the measure of the level of heatness and coldness.  It  can be measured…

Q: List several significant events in the history of life on earth that are associated with the K-T…

A: KT boundary is the boundary between the age of reptiles that occurred in the Mezoxoic era and age of…

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: Why was it believed that life began in the seas and not in land or air? * Land and air were…

A: Option a is correct  Land and air were inhospitable places for life during the archean eon.

Q: Which of the following is associated with the Cenozoic era? O a. Warmer planet O b. Different…

A: The answer is given below:    The first two are associated with the Cenozoic era.

Q: Describe one of the major extinction events during the Late Paleozoic or Mesozoic (include when it…

A: Description of the major extinction event occurred in late paleozoic Or medozoic era.

Q: Which of the following is the best way to measure the age of the Earth? O Examine rocks collected in…

A: Test the rate of decay of specific elements in rock samples

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: The eon comprising the Cambrian period up to the present is called the (1). It is divided into three…

A: Geological time scale is the calendar for events in the Earth history. It is subdivided into eons,…

Q: The ends of many eras and periods in the geologic time scale are characterized by?

A: Introduction: Paleontology is the study of the earth's history of lifeforms, which is based on…

Q: In which era did humans first appear on Earth? O A. Paleozoic O B. Mesozoic C. Precambrian O D.…

A: Humans do not evolve from the todays chimpanzees but human develop along side with the chimpanzees…

Q: Flowering plants and mammals diversified and became dominant during the (a) Paleozoic era (b)…

A: Flowering plants are the angiosperms that produce flowers as organs of sexual reproduction.

Q: Table 10: Some Important Events in Geologic Time Era Period Triassic Epoch Event Age of Reptiles…

A: * Modern mammals have evolved from preceeding animals . * Formation of modern humans from azoic era…

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 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: What's the largest unit of geologic time, lasting hundreds of millions of years? A. Era B. Eon C.…

A: INTRODUCTION Largest unit of geolic time lasting hunderds of millions of year are Eons.

Q: Discuss four (4) evidence-based reasons why it is being highly proposed that we are under the…

A: Anthropocene  Anthropocene epoch is the unofficial most recent epoch of the earth history where…

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: What is our current eon ______________, era _______________, and period _______________   Age…

A: Since multiple subparts are posted so first three subparts have been answered.  The geologic time…

Q: The largest and most deadly of all Mass Extinctions in the history of Earth came at the end of the…

A: If we observed the geological time scale then we can see different evolutionary events occurs…

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: Why is there an argument among scientists about recognizing Anthropocene as an epoch?

A: Epoch means an event or a very long time marked by an event that begins a new period or…

Q: How do geologist define many of the boundaries between sections of geologic time

A: Eons are classified into periods, which are smaller time spans. The Phanerozoic is divided into…

Q: A. How old is the Earth? B. How long did the longest eon (so far) last? C. How many years ago did…

A: Epoch is longer than era. Eon is the longest period of geological time.

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: 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: 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: omplete the table by checking the correct column(s) for each statement. Paleozoic Cenozoic Mesozoic…

A: The Geologic Time Scale is the history of the Earth broken down into four spans of time marked by…

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: Describe the conditions on Earth 4.5 billion years ago

A: Evolution is the process of slow gradual change over a period of time. The process of evolution…

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.