Q: How old is the universe?
A: The universe is everything that we can feel, touch, sense, and measure which includes planets,…
Q: How can you know what happened millions of years ago if no one was there to see it Explain
A: Every living creature on the planet has the potential to evolve into something. Cells adapt to…
Q: Once life began, what types of organisms lived on Earth forthe next two billion years? Where did…
A: Introduction There are several hypotheses presents on that how life starts on the primitive earth.…
Q: How did discoveries in the deep sea influence scientists' ideas about whether life could be found…
A: A discussion of life elsewhere therefore naturally begins with a review of some key aspects of the…
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: Essay type : Answer the following questions. (please intend me atleast 3 to 4 paragraphs) Why do we…
A: Earth is so far the only planet that has the capability to sustain life on it. There are many…
Q: What evidence would you look for on one of these moons that would tell you that life may have…
A: The proof that we would look at Moon is about the indication for aspects of life.For example-…
Q: What invention changed the fate of the passenger pigeon in Oklahoma ? How ?
A: The study of interrelationship between the living organisms and its environment is known as ecology.…
Q: What does the Pangenesis has to say?
A: The sexual mode of reproduction defines the mating of two gametes to form a fertilized cell. Both…
Q: What does it tell us if we discover life on one of these moons and it has characteristics similar to…
A: If we discover life on one of these moons and it shows alike characteristics as that of earth then…
Q: What experimentation has been done on finding the source of raw material for the first life on…
A: Raw materials Raw material are the basic materials from which the things are made. Like raw…
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 can you say about the story of earth?
A: Evolution mainly focus on living organism. Evolution means "descent with modification" ( Darwin,…
Q: What are age pyramids?
A: An ecosystem is a large community of living organisms in a specific area in which the biotic and…
Q: Where did the oxygen in the atmosphere come from?
A: Step 1 The origin of photosynthesis occurred with the evolution of a light-harvesting pigment…
Q: What is the origin and function of terra preta?
A: Terra Preta (Portuguese for "Black Earth") is a soil-building technology invented by ancient…
Q: Why can Earth, in many ways, be considered amicrobial planet?
A: Micro-organism are tiny organisms that cannot be seen by the naked eye, but are visible under…
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: What would have been the colour of the sky if there had not been any atmosphere around the earth?
A: The atmosphere is the blanket of gases that surrounds Earth. It is held near the surface of the…
Q: Name three ways that humans have affected life on Earth.?
A: humans have affected the earth environment in many ways. The three Major problems are 1-pollution…
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 Homo sapiens ?
A: Evolution is a biological hypothesis that states that the diverse forms of plants, animals, and…
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: 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: 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: The biggest living in earth?
A: Introduction Biodiversity refers to the availability of different types of species of different taxa…
Q: How does the structure of a DNA molecule help account for the great variety of life that exists on…
A: DNA is the specific and dominant building block of the entire living organisms. They provide almost…
Q: HOW OLD IS EARTH? HOW LONG DID THE LONGEST EON (SO FAR) LAST?
A: Different planets have different atmosphere.
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: Why was it believed that life began in the seas and not in land or air?
A: Scientists believe that the life on the earth began in the depths of the ocean and not on the…
Q: How did Rebecca Crumpler's accomplishment(s) impact the scientific community?
A: Rebecca Crumpler was an American doctor. She was born in 1831. Not much is known about her, however,…
Q: What's the earth crust?
A: Earth is a planet that is made up of the lithosphere, hydrosphere, and atmosphere. All of these…
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: We are relatively "new" to the Earth yet how come our impact to the Earth System has been profound?
A:
Q: How have changes in earths systems contributed to the evolution of life?
A: Earth and its environment are persistently modified. Plate tectonics move the landmasses, raise…
Q: What Planet has a sustain life?
A: Planets are the celestial bodies which revolve around sun in definite orbits.
Q: How did the Miller-Urey experiment impact the way scientist think about the origins of life
A: The slow and gradual change over a period of time is called evolution. There are many theories of…
Q: Radiometric dating is a technique used to determine the age of rocks. Geologists have used this…
A: Radiometric dating is a technique used to determine the age of rocks. There is a constant rate of…
Q: Did objects in the early Solar System get generally smaller or larger? Explain.
A: With the gravitational collapse of a small portion of a massive molecular cloud, the formation and…
Q: Life first appeared on Earth ___________ of years ago. Choose one: A. billions B. hundreds…
A: Earth is formed around ~4.5 billion of years ago. Life on earth had started after some time.
Q: How does the evolution of living organisms influence the way we classify the 6 kingdoms?
A: Classification of living organisms was a fundamental process for their detailed and comparative…
Q: When scientists try to assess the habitability of Mars, what is their guiding principle, based on…
A: Introduction Life:- It is defined as any system capable of performing functions such as breathing,…
Q: How are the different periods in the history of the earths broken up?
A: Evolutionary biology is the branch of biology that deals with the study of evolution or orderly…
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…
How do scientists really know how old the planet is?
Step by step
Solved in 3 steps
- south america and africa are drifting apart. where might they be couple hundred years ago?When scientists try to assess the habitability of Mars, what is their guiding principle, based on what we know of life on Earth?For how long has there been life on Earth? For what percentage of time has life existed on Earth? For about how many years of geological time have human existed on earth?