How have changes in earths systems contributed to the evolution of life?

Q: If a sixth extinction event is occurring, how is it similar or different from the previous five mass…

A: Various mass extinction events that occurred in the history of the earth are- Ordovician-Silurian…

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: What experimentation has been done on finding the source or raw material for the first life on…

A: Harold Urey and Stanley Miller are two American scientists who attempted to create similar…

Q: How have humans influenced extinctions?

A: Extinction caused by human activities is called Holocene extinction. There is a correlation between…

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: NOW TO CONCLUDE, ANSWER THE QUESTION. 1. ARE WE ON THE BRINK OF A MASS EXTINCTION? WHAT WOULD BE…

A: The loss of around three-quarters of currently living species in a relatively small geological…

Q: Direct evidence of life on early Earth comes from fossils of microorganisms that lived 3.5 billion…

A: The earliest life structures we are aware of were minuscule organic entities (microorganisms) that…

Q: During the first 600 million years of Earth history, enzymes, ATP , and other molecules could have…

A: The primitive earth was in the form of a red hot, solidified cloud containing free atoms. The…

Q: Without an oxygen-free atmosphere, the organic compounds that started the story of life never would…

A: The Earth has been significantly altered by life. Organisms have influenced the composition of the…

Q: outline major stages in life evolution, and describe how the landsurface changed as life evolved.

A: The period from 4600 mya to 2500 mya is called Archean eon.

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: During what geologic period did life on Earth begin?

A: Evolution is the process of gradual changes occurring in the species over a period of time, when the…

Q: 9) Rocks containing fossil evidence have been found in Canada suggesting how life on Earth evolved.…

A: They are the remains of an organism that are preserved. They can be found as traces of ancient…

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: How does the fact that Earth is a sphere tilted on its axis influence thedistribution of life?

A: Earth is so far the only planet that has the capability to sustain life on it. There are many…

Q: How is origin of life attributed to LIGHT and WATER? Give a detailed explanation.

A: The origin of life is still a mystery and not proved. There are many theories that are suggested by…

Q: How the evolution of oxygen was involved in the initial evolution of terrestrial life

A: Photolysis of water vapors and carbon dioxide produce hydroxyl and oxygen, individually, thus, they…

Q: The first single-celled organisms on Earth probably evolved (a) 3,700 years ago (b) 3.7 million years…

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

Q: Why is RNA likely to have been pivotal in life’s beginnings?

A: Ribonucleic acid (RNA) is a polymeric molecule that plays various roles in biology, including gene…

Q: Is your answer supported by the information from the article “Can Evolution outrace Climate Change”?…

A: Evolution is a very slow process compared to the speed of climate change. It is unlikely that…

Q: Four billion years ago, the Earth was a thin-crusted inferno. Which probable stage of physical and…

A: Solar system was originated around 4.6 billion years ago from contraction of rotating gas and dust…

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: How do fossils support evolution, speciation and extinction?

A: Fossils are defined as the imprints kr impressions of the dead remains of the plants and animals on…

Q: Has the number of species on Earth increased steadily since the origin of life?

A: Ans: Species: The species are those which are capable of interbreeding and producing the offspring.…

Q: Applying your knowledge of genetics, natural selection and evolution, how is the positive response…

A: long-term changes in temperature and climate systems are referred to as climate change. These…

Q: How did Humans Evolve?

A: Evolution is the slow process of transformation of a complex and advanced form of individuals from…

Q: What evidence would you look for on Enceladus, Europa or Mars that would tell you that life may have…

A: Europa is the smallest of four Galilean moons orbiting Jupiter. Enceladus is the sixth-largest moon…

Q: What is the most accepted hypothesis on the origin of life on earth? How does it compare to the…

A: Introduction The heterotrophic hypothesis on the origin of life is the most compelling and widely…

Q: How can the variability of life in both time and space be described?

A: Ecosystem balance, often known as "ecosystem homeostasis," is influenced by both factors that tend…

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: Geological time covers huge spans, up to billions of years. Yet humans rarely live for more than 100…

A: Geological time scale is important to understand the history of earth that how several natural…

Q: what is the difference between evolution and acclimation and how do they work with climate change?

A: Acclimation and evolution are the beneficial changes takes places in the organism . It allows…

Q: What does Oparin – haldane hypothesis about origin of life suggests.

A: The Oparin-Haldane theory of the origin was discovered by two scientists Aleksandr I. Oparin and J.…

Q: Have we identified all life on Earth

A: Biologists have described and classified 1.7 million plants and animals as of 2010, less than…

Q: the landmark experiment by Miller and Urey, and various repeats of this experiment, did not…

A: Introduction: The mentioned experiment was carried out to understand the various ways in which the…

Q: How have the earth and life on it evolved together with each deeply influencing the other?

A: The different varieties of animals, microorganisms, and plants are present on earth. All the…

Q: Imagine an ancient sunlit estuary rich in clay deposits. Countless aggregations of organic molecules…

A: Several hypotheses have been made in relation to life's origins on Earth. In 1936, Alexander Oparin…

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: how did humans evolve ? where did the earliest form of humans evolve from?

A: Evolution is defined as the change in the characteristics of a population or a particular organisms…

Human Evolution

Human evolution is the process of evolution of humans from early man to anatomically modern humans. The process of evolution in humans leads to the gradual development of traits like bipedalism. Humans are the highly social animals that make them the most advanced animal on Earth.  Human evolution is an outcome of interaction among the following processes: