Large amounts of iridium were found at the K–Pg boundary not only in Denmark and Italy, but in other areas of the globe as well. This suggested that the asteroid was likely large in size and had _______ impact. A. an insignificant  B. a catastrophic

Q: Based on your observations, what type of rock is this? O A. Magma O B. Igneous O C. Sedimentary O D.…

A: Answer: Introduction: In geology, rock means spontaneous aggregate of one or more minerals. It is…

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: The heaviest elements during the Earth’s formation were what?  What part of the Earth did they form?…

A: The structure of the earth is divided into four major components: the crust, the mantle, the outer…

Q: Which of the following evidence supports the concept of continental drift? Select all that apply.…

A: Continental drift refers to the phenomenon that describes how the continent's position on Earth gets…

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: The term “Cambrian explosion” refers to (a) an increase in biodiversity. (b) a mass extinction. (c)…

A: Answer: Introduction: The Cambrian explosion or Cambrian radiation was an incident about 541 million…

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 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: a. Explain what is meant by plate tectonics. b. In your own words explain what happens at a…

A: The Earth is in a state of flux at all times. The lithosphere, or Earth's crust, is made up of 15 to…

Q: When a chemical is heated in a flame, the flame has a unique color. This knowledge was eventually…

A: The metal or elements when heated in a flame, the electrons present in the metal or element will…

Q: Why do you think it was so important to science when Alfie Wegener and Harry Hess proved their…

A: Alfred Wegener made proof in 1912 that the continents are in motion, however as a result of he…

Q: The researchers found that the Neanderthal fossil had approximately0.0078 as much 14C as found…

A: a. The half live can be calculated  using the formula- N=N0(1/2)n where, n = number of half lives,…

Q: Radiometric decay of carbon-14 would be used in dating sedimentary rock. a trace fossil. an insect…

A: Radiometric decay is a method dating substances of possible majority of organic content. Principle:…

Q: Give two lines of evidence supporting the asteroid impact hypothesis for the Cretaceous extinctions.

A: The evidence is given below.

Q: Martian meteorites found in Antarctica were determined to possibly contain life. Scientists looked…

A: Known as ALH 84001, the Martian rock whose remains were present in meteorites contained structures…

Q: 2Aireonnia Denn m Enter your search term 5653 Base your answer to this question on the diagram below…

A:

Q: and why? W

A: INTRODUCTION  Before long and many years, progressed space-and ground-based observatories will…

Q: A) What is extinction? How extinction is different from expiration? Explain. (B)List the ive mass…

A: Evolution is a slow but continuous process.

Q: Relative-Age Dating Absolute-Age Dating Younger 440 mya 480 mya 520 mya 545 mya Older 2. The dates…

A: Ans: C: Igneous rock layers

Q: What argument convinced most scientists in the 1800s that Earth was more than 6,000 years old? O The…

A: Introduction All life on earth began from the universal last common ancestor which lived 3 to 4…

Q: The most useful method for dating ancient calcium rich cave deposits would be Group of answer…

A: Answer :- Option (D) is correct. - Uranium-Thorium Dating.

Q: which term describes any ancient remains, impressions, or traces of an organism or traces of its…

A: Certain minerals may be smelted more easily than others, and these are known as ore minerals.…

Q: Most people tend to think that if the sun ever stopped emittinglight, all animal life on Earth would…

A: An animal varieties or species is regularly characterized as the biggest gathering of organisms…

Q: Explain the unusual observations Walter Alvarez made in the Scalgia rossa formation in Umbria.

A: Walter Alvarez was born and raised in Berkeley, attended Carleton College in Minnesota, and received…

Q: Over the course of a year, what percent of all the stars on the celestial sphere would an observer…

A: There is technique for locating circumpolar stars or celestial bodies in Southern hemisphere. Closer…

Q: Which of the following is characteristic of the end of the Paleozoic Era? a There was a mass…

A: As experts believe, the Earth was formed as a result of the Big Bang Explosion. The geological time…

Q: a. are we  amidst an extinction right now ? why b. is it  a mass or background extinction,

A: Yes we are in a extinction that is known as 6th mass extinction it is the worst and fastest…

Q: Choose 1 geological time scale major events and discuss briefly but concisely your chosen major…

A: Geological time scale  - it used by scientists to tell the evolution and when a species was first…

Q: Which parent isotope is most useful for dating samples that are greater than 100 million years old?…

A: Radioactive decay is a process in which the unstable isotopes (natural) emit radioactive particles.…

Q: Which of the following are useful for reconstructing ancient environments? Group of answer choices…

A: Option 1 is correct because glacial ice contains dust, air bubbles, or isotopes of oxygen that can…

Q: Radiometric dating ... Group of answer choices A: is based on the scientific observation that…

A: Answer  E) all of these answers are true

Q: Radioisotopes are useful in dating fossils and rocks because

A: Fossils  They are remains of animals which are preserved in ice or in deep underground or inside…

Q: The largest mass extinction on record is the mass extinction event. O Late Permian O Late…

A: According to law of superposition within a sequence of layer of sedimentary rock the oldest layer is…

Q: Which of the following do not provide evidence that a meteor strike was a partial cause of the…

A: About 65.5 million  years ago KT extinction event occurred which wiped off the dinosaurs from the…

Q: We are relatively "new" to the Earth yet how come our impact to the Earth System has been profound?

A:

Q: Consider the following sketches below 1) Explain how scientists use seismic data to learn about…

A: A seismograph, also known as a seismometer, is a device that detects and records earthquakes. It…

Q: Comets, Asteroids, and Meteors cead the characteristics listed below. Add each Yenn diagram.

A: Comets are the snowballs of the rock, dust, and frozen gases that revolve around the sun. Meteor is…

Q: True or False: Models of the structure and composition of the solar system have changed little since…

A: The Solar System is the gravitationally bound system of the Sun and the objects that orbit it,…

Q: Suppose a scientist finds a rock with an interesting fossil. Curious to know the age of the fossil,…

A: As per the data given, the Rb-Sr isochron equation is -   ( 87Srt /86Srt ) = ( 87Sr0 / 86Sr0 ) + (…

Q: Scientists are examining the possible role of a large asteroid in the cretaceous mass extinction…

A: Introduction :  Small, airless rocky bodies revolving around the sun between the orbits of Mars and…

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: What are stromatolites? From what we know of their formation today, why might we expect them to have…

A: Photosynthetic microbes live on the surface of the water. These microbes generate oxygen during the…

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: Radiometric dating ... All of these answers are true O provides an accurate means of determining the…

A: Radiometric dating  Technique used to date materials such as rocks by observing the abundance of…

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…

Q: This was one of Galileo’s observations?  A. Venus goes through phases B. Our sun orbits the center…

A: Galileo's discoveries supported that the sun, not the earth, was the center of the universe.

Q: Scientists are examining the possible role of a large asteroid in the Cretaceous mass extinction…

A: ANSWER;- OPTION  C is correct ( after the asteroid strike).

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…