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

Q: A scientist discovers something new about the composition of the mantle. What type of rock (group)…

A: The mantle is the part of the earth between its crust and its core.

Q: Describe in your own words how the Earth’s layers were formed

A: Earth is the planet on which we live.

Q: underground into hardened rock. melted rock is READING Diagrans called magma. What causes a…

A: Rocks forms the important part of the earth. The cycle of rock formation is evident as it helps in…

Q: Which statement accurately describes the geologic The diagram shows cross-cutting relationships…

A: Cross-cutting relationships are when a geologic feature like igneous intrusion breaks other…

Q: Analyze the following data table indicating the amount of Carbon Dioxide in Earth's atmosphere at…

A: Earth`s temperature is in direct correlation with the levels of CO2 which is the primary greenhouse…

Q: What is the term for bits of rock and dirt? O A. Mesozoic O B. Half-life O C. Sediment O D.…

A: An MCQ has been asked. Have to name a term for bits of rock and dirt.

Q: How is fossil age measured

A: Relative dating and absolute dating are the two basic approaches for establishing the age of a…

Q: Which of the following describes the organisms and/or processes that were most influential in the…

A: The earth is one of the eight planets revolving around the sun. It is estimated that earth have been…

Q: Compare and contrast Relative dating, Absolute dating, and Radiometric dating.

A: Every preserved bones, impression, or residue of a once-living thing from a previous geological…

Q: Using the principles of relative dating, put the rock layers, faults, and igneous intrusions in a…

A: Relative dating is the science of interpreting the relative order of events that occurred in the…

Q: Which of these steps probably occurred first in the chemical andbiological evolution of life?a. The…

A: All living organisms are made up of organic components like carbohydrates, proteins, lipids, etc.

Q: Which method is used to assign numerical ages to events or materials? absolute dating half-life…

A: By measuring the radioactive decay of isotopes or the effects of radiation on the crystal structure…

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: On the geologic time scale, life originated in the_____ . a. Archean c. Phanerozoic b. Proterozoic…

A: The geologic time scale is a chronological dating system that classifies geological strata into…

Q: The early atmosphere lacked which gas? 1. carbon dioxide 2. oxygen 3. amonia 4. nitrogen

A: The early atmosphere was likely to contain a lot of carbon dioxide and water vapor because it was…

Q: Scientist have determined that the early Earth had no free oxygen anywhere. Briefly explain what…

A: Scientists suggest that the early atmosphere of the earth was very hot and had no ozone or free…

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 interval of time does the Anthropocenerefer to?

A: The major events during the evolution and origin of life on the earth are divided into three eras.

Q: 1. Which is older: the arrowhead or the spear point? 2. If G is a well, who do you think dug it? 3.…

A:

Q: Describe what the early atmosphere was like and what cause a large amount of oxygen (O2) to build up…

A: Early atmosphere  Around 4.6 billion years ago, the Earth was formed from a heated mixture of gases…

Q: an abundance of ______________ in earth's early atmosphere would have interfered with assembly  of…

A: Organic molecules are molecules found in all the living organisms. These molecules are formed by a…

Q: Cenozoic Era

A: The Cenozoic era began about 66 million years ago and continues into the present, is the third era…

Q: Describe an example from the fossil record that showshow life has changed over time.

A: Evolution is the process of heritable change in the characteristics of an organism. Such changes…

Q: Which of these events occurred in the Mesozoic era? First mammals First cyanobacteria First bacteria…

A: Mesozoic era has three periods cretaceous, Jurassic and Triassic periods. It is the age of reptiles.

Q: Organism A lived from 410 to 60 million years ago. Organism B lived from 200 to 100 million years…

A: In case of human or animal remains from the past 50,000 years, researchers focus at levels of carbon…

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: A. What is the PROTEROZOIC LIFE? B. Discuss the Great Oxygenation Event. C. Discuss the CAMBRIAN…

A: Geological time scale is a evolutionary event  which determines how the life appear , its…

Q: For how long has there been life  on Earth? For what percentage of time has life existed  on Earth?…

A: Any net lateral change or continuous change in the traits of species or populations over several…

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: Which of the following events did NOT occur during thePrecambrian?a. Formation of the ozone layerb.…

A: Introduction The Precambrian Period, which predates the current Phanerozoic Eon, is the earliest…

Q: what key trait of life developed with the emergence of multicellular organism, the third threshold…

A: Multicellular organisms are those where there is specialization of different cells for various…

Q: What is the change between the paleolithic era and the neolithic era? What is the Neolithic…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

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: We live in the Cenozoic era, and scientists know more about this era and the epochs it’s divided…

A: The term 'Cenozoic' refers to a period of time ranging from 66 million years ago to the present day.…

Q: If the evolution of life was placed on  a 24 hour clock, when did humans arrive? a.  At the 30…

A: The geologic time scale of Earth is divided into four large segments called Eons: Hadean, Archean,…

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: at is the term for an element that decays into another O A. Sediment O B. Mesozoic O C. Radioactive…

A: This is the physical phenomenon of certain elements of emitting energy in the form of radiation.

Q: Name three different sources of energy that could have powered reactions on early earth to form…

A: The origin of simple organic compounds or monomers took place by the gases present in the primitive…

Q: Which of the following shows the correct sequence of periods in the Mesozoic era: a) Triassic,…

A: Evolution is a change in species and organisms that are inheritable and can be transferred from…

Q: Solid wastes produced from burning of fossils fuels is: A) Carbon dioxide B)Water vapor Ash Sulfur…

A: Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, formed from the remains of…