Q: When considering the entire period of time during which life on Earth has been evolving, we must…
A: To understand the change in flora and fauna that have occurred over million of years on Earth ,we…
Q: Explain the Big Bang Theory of Evolution and compare it with the Creation Story in the Book of…
A: Cosmology is the study of the universe's origin, characteristics, operations, and evolution.…
Q: Why is it hard to create a timeline of events chronicling Earth’s History?
A: There are timeliness but they are often conjectured and who can argue with them with an alternative.…
Q: Geologic changes often accompany mass extinction of life forms. Why do you think this is true?
A: Introduction:- To understand this question first we need to know what is mass extinction and major…
Q: Paleomagnetic reversals cause mass extinctions when they occur. Group of answer choices True False
A: False.
Q: a direct outcome of the formation of the Moon according to the giant impact theory?
A: The giant impact theory suggests that the Moon formed out of the debris left over from a collision…
Q: 41. Below is a list of major events that occurred in the history of life. Write the letter…
A: The history of life traces the events that occurred in the formation of organisms on the earth. It…
Q: what is mass extinction?
A: Dear student:- Answer:- A mass extinction is typically described as the extinction of roughly…
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: Which of the following events occurred earliest in Earth’s history? a. Membrane-enclosed structures…
A: Recognizable human beings appeared on a geological scale at most 2 million years ago, a vanishingly…
Q: Explain the consequences of plate tectonics for lifeon Earth.
A: The continents form a part of the floating plates of the crust of the earth. Movements of the mantle…
Q: Describe how the sudden appearance of oxygen in the atmosphere about 2.5 billion years ago…
A: Since life first emerged on Earth between 3.5 and 4 billion years ago, it has continued to develop.…
Q: Which of the mass extinctions was the largest? What percentage of life went extinct during that…
A: Mass extinction is defined as the dis-appearance of a large scale of biodiversity (animals +plants…
Q: 19. When a radio-isotope in a fossil with a half-life of 3,000 years has been reduced to 1/8th of…
A: On completion of each half life the amount of the substance reduces to half of its initial value.…
Q: What patterns can be compare to the mass Extinctions events?
A: Mass extinctions are followed by the pattern : Adaptive Radiation Increasing Earth's Biodiversity.
Q: QUESTION 2 Approximately when did living things first appear on land? O 4.75 billion years ago O 3.5…
A: The age of the earth is estimated to be about 4.54 billion years. When the earth was formed for the…
Q: M 1 2 3 4 10,000 bp 3,000 bp 1,000 bp 250 bp
A: On the lane 4 , When the DNA appears as a messy , continuous band at the bottom rather than a…
Q: The Americas (New World) was first peopled (colonized) approximately 1.5 million years ago.…
A: Colonisation refers to the large scale movement of individuals to a particular area and they settle…
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: Life originated from the earth’s inorganic atmosphere in the post, but this no longer happens today.…
A: Theories from various scientists propose that in Earth's prebiotic history, simple organic matter…
Q: What was the composition of the earth’s atmosphere at the time of the origin of life, and how did it…
A: Earth was originally in the molten lava state mainly consists of hydrogen sulfide and other…
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: The fossil record shows that in just the last 600 million years, there have been five instances of…
A: Explanation: The most studied mass extinction, which marked the boundary between the Cretaceous and…
Q: Describe the conditions that scientists think existed on early Earth.
A: Introduction The origin of life on earth can be traced back to 3.4 billion years ago and as we now…
Q: What was the Earth like million of years ago?
A: Millions of years ago, there is no life on the Earth. The temperature of the Earth was scorching,…
Q: “Life has profoundly changed the Earth.” Explain whether or notthese experimental results support…
A: The earth was formed about 4,570 million years ago and over the passage of time, different…
Q: Humans have been around for only about years of the planet's 3.8 billion years in existence. 90,000…
A: Approximately 6 million years ago, a primate group known as Ardipithecus formed the first vital…
Q: HOW OLD IS EARTH? HOW LONG DID THE LONGEST EON (SO FAR) LAST?
A: Different planets have different atmosphere.
Q: what element rise that caused the diversification event in evolution of earth
A: Introduction : The rise in oxygen, which is termed the Great Oxygenation Event is an important event…
Q: n Stanley Miller’s experiment to recreate the early Earth conditions that gave rise to life,…
A: The Stanley miller's experiment is also called miller-Urey experiment. It was a chemical experiment…
Q: Use the following figure to answer questions 2 and 3. mya - million years ago 1,400 mya -1 bilkan…
A: Earth was formed in our solar system along with other planets, and its age is about one third of…
Q: Based on the Origin of Life by John H. McClendon, how did life on earth start based on the different…
A: John H. McClendon published the Origin of Life in 1999. There he mentioned the origin of the…
Q: Historically, how has the origin of life on earth been explained?
A: Introduction The mythological explanation for the phenomenon of life on Earth is the most frequently…
Q: Which staterment from the choices below, BEST describes scientists current understanding of the…
A: Methane, ammonia, water vapour, and the noble gas neon were abundant in Earth's initial atmosphere,…
Q: How would you describe earth of millions year ago
A: It is believed that our planet Earth is about 4.54 billion years old. About 3.5 billion years ago…
Q: Which of the following theories as regards the origin of life on earth is accepted today? A. Theory…
A: The origin of life on earth is known to arise from the non-living matter, organic compound. The…
Q: For how long has there been life on Earth? For what percentage of time has life existed on Earth?…
A: The age of the earth and proper research about the origin timelines of life had not yet researched…
Q: We are relatively "new" to the Earth yet how come our impact to the Earth System has been profound?
A:
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: The earth is about 4.6 billion years old. Based on the formation of seafloor spreading, why do you…
A: The newest, thinnest crust on Earth is located near the center of mid-ocean ridge—the actual site of…
Q: Give 1 reason from the reading that shows that there are no life forms on Venus.
A: Venus is the second planet in our solar system that is named after a female. It is slightly smaller…
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: List three locations where the building blocks of Earth’s first lifemay have formed
A: The biological event through which life has originated from non-living matter, like simple organic…
Q: Explain why the Oxygen (3800-3500 million years ago) is important and elucidate the impact of that…
A: Life originated around 4 billion years ago in the deep-sea hydrothermal vents and around 3.6 billion…
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: HOW MANY YEARS AGO DID THE MOST RECENT EPOCH BEGIN? HOW MANY MASS EXTINCTION EVENTS HAS EARTH…
A: Introduction An extinction event is a significant and rapid loss of biodiversity. A dramatic change…
Q: Describe in general terms how the appearance of molecular oxygen in Earth’s atmosphere about 3…
A: The earth was created almost 4.5 billion years ago. The evidence suggests that the planet was devoid…
Q: What type of plates that float on top of the mantle do scientist believe that the Earth's crust is…
A: The earth is made up of different layers: 1)The Inner core- It is the inner and hottest layer of the…
Q: 19.Approximately how old is earth? Group of answer choices a.about 4.567 billion years b.about a…
A: Fossils are dead plants and animals that have been preserved in sedimentary rock or other crust…
Describe the conditions on Earth 4.5 billion years ago
Evolution is the process of slow gradual change over a period of time. The process of evolution leads to the formation of new species and the evolution of new organisms. There are many theories of evolution
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- List several significant events in the history of life on earth that are associated with the K-T Boundary.1) What piece of evidence initially convinced Dr. Alvarez that a mass extinction had occurred at the K-T boundary? 2) What was the first clue that an asteroid had struck Earth at around the same time as the mass extinction? 3) What additional observations and findings supported the asteroid-impact hypothesis? Which piece of evidence definitely showed that an asteroid had struck Earth? Explain your answer.Which eon has more events occurring in it? During which eon did life evolve? What is the difference between background extinctions and mass extinctions?
- Scientists are examining the possible role of a large asteroid in the cretaceous mass extinction event. A large asteroid strike would likely have caused rapid climate cooling and the diffusion of sunlight. which of the following statements are the best null and alternative hypotheses when scientists look at the geologic evidence of extinction related to the asteroid strike?Historically, how has the origin of life on earth been explained?What was the composition of the earth’s atmosphere at the time of the origin of life, and how did it differ from the atmosphere of today?
- Describe how the sudden appearance of oxygen in the atmosphere about 2.5 billion years ago influenced the development of modern life-forms.Why is it hard to create a timeline of events chronicling Earth’s History?Give two lines of evidence supporting the asteroid impact hypothesis for the Cretaceous extinctions.
- Scientists are examining the possible role of a large asteroid in the Cretaceous mass extinction event. A large asteroid strike would likely have caused rapid climate cooling and diffusion of sunlight. Which of the following statements are the best null and alternative hypotheses when scientists look at the geologic evidence of extinction related to the asteroid strike? Null: The rate of extinction would be steady over the entire length of time the climate was altered. Alternative: The rate of extinction would be greatest immediately before the asteroid strike. Null: The rate of extinction would gradually decrease over the entire length of time the climate was altered. Alternative: The rate of extinction would be at its lowest immediately after the asteroid strike. Null: The rate of extinction would be steady over the entire length of time the climate was altered. Alternative: The rate of extinction would be greatest immediately after the asteroid strike. Null: The rate of…What is the “sixth mass extinction event”?Describe the conditions that scientists think existed on early Earth.