Measurements of zircon crystals containing trace amounts of uranium from a specimen of granite yield parent/daughter ratios of 25 percent parent (uranium-235) and 75 percent daughter (lead206). The half-life of uranium-235 is 704 million years. How old is the granite?

Q: roles within structured command (ICS).  (Hurricane Katrina)   2) applicable crisis response…

A: We ar authorised to answer one question at a time, since you have not mentioned which question you…

Q: The Moon's surface is visible to an observer on Earth because the Moon (1) reflects sunlight (2)…

A: The moon is only present on Earth, the first planet beyond the Sun. Although the Moon is Earth's…

Q: 4. 8 50.885'N, 127 1.185'E: Philippine Sea. 5. 40 25.992'N, 77 7.431'W: Centre Township, PA, USA. 6.…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: What observable features would lead you to classify a coastal area as emergent?

A: Emergent coastline occur where sea levels drops relative to shore level or the land rises. Emergent…

Q: Under what circumstances will the front of a glacier advance? Retreat? Remain stationary?

A: The distribution of water on the earth is very uneven ,as most of the water present on our earth is…

Q: This photo shows a portion of the Maine coast. The brown muddy area in the foreground is influenced…

A: The brown muddy area influenced by tidal currents is termed as the Tidal Flat. It is an area which…

Q: Summarize the ways in which people deal with shoreline erosion problems.

A: Shoreline erosional problems can be handled with the help the below points.

Q: Assignment 1 - Exit Slip. 1) Define weather. 2) Define climate. Assignment 2- Exit Slip. Identify…

A: The surroundings in which all the plants, animals and other living beings reside is known as the…

Q: List the four basic units that make up the geologic time scale.

A: INTRODUCTION:   Earth is 4.6billion years, Many scientists together make a calendar for the earth's…

Q: 1. What important kind of energy helps us to see the world that we live in? A. chemical energy B.…

A: Note - according to our guidelines we can answer only one question and rest can be reposted.

Q: Thawing permafrost is a major environmental concern in which climatic region? Select one: a.B…

A: Permafrost is a for all time frozen layer beneath Earth's surface. It comprises of soil, rock, and…

Q: What might be true and significant about this for geology?   a. Earthquake prevention relies on…

A: The cone-shaped geologic landform developed as a result soil liquefaction process is termed a sand…

Q: A heat source, unfractured rocks, and a permeable cap rock are the parameters that need to be met…

A: ANSWER: d) Heat source, fractured rocks, and impermeable cap rock.

Q: What law permitted the reintroduction of gray wolves to Yellowstone National Park? O Superfund…

A: The Endangered Species Act of 1973 in 1995 reintroduced the gray wolves into Yellowstone in the…

Q: What is the lag time?

A: The immediate and short-term tremble generated on the earth's surface that varies from a small…

Q: Which processes relate to mechanical weathering? Check all that apply. Ofreezing and thawing O plant…

A:

Q: what is the name of the colors in layers of the soil

A: INTRODUCTION: The soil color explains and informs how the soil formed. The first thing we notice…

Q: Which land surface characteristics produce the greatest amount of absorption of insolation at…

A: The amount of solar radiation that is received on a given surface at a given time is called…

Q: What is the purpose of a cell membrane?  What is the membrane composed of, and how are the…

A: *The cell membrane is also called the plasma membrane. *The function of the cell membrane is to…

Q: Describe some circumstances that lead to the formation of a spring.

A: Springs are not only found on the Earth's surface. Hot springs have recently been found in the…

Q: Under what circumstances does the front of a glacier advance? Retreat? Remain stationary?

A: They retreat as for the below explanation given in points.

Q: II survey question. Question #1 Why is it so important to closely analyze the jet stream in the…

A: Jet Streams are a band of strong winds which blows from west to east in the upper layer of…

Q: Describe the features and characteristics associated with each stage in the evolution of a…

A: Deserts are regions with little or no precipitation. Despite the fact that certain deserts are…

Q: Explain the cause of tides and their monthly cycles. Describe the horizontal flow of water that…

A: INTRODUCTION: "Tides are very long periods of waves that move through the ocean in response to the…

Q: Contrast a gaining stream and a losing stream.

A: A stream is a body of fresh water that flows by the action of gravity along the slope. A stream can…

Q: Which of the following is an example of a phenotype? A B С D the actual height of an organism the…

A: Phenotype is a external expression of internal genes of an organism. Different genes and genetic…

Q: How does the mantle affect Earth's crust?

A:

Q: Describe the Theran eruption and its impact on the Minoan civilization? Did the eruption either…

A: The Theran eruption that devasted the Aegean island of Thera circa around 1600 BCE was a…

Q: Determine how much sea level has changed since the Last Glacial Maximum.

A: Over the course of Earth's history, the global or eustatic sea level has changed substantially. The…

Q: Explain why the shoreline is considered a dynamic interface. List the factors that influence the…

A: The shoreline is considered a dynamic interface. List the factors that influence a wave's height,…

Q: Imagine that you are an environmental scientist who has been hired to solve a groundwater…

A: The landfill can be eliminated because it is at a lower level and downslope from the house.

Q: Distinguish among angular unconformity, disconformity, and nonconformity.

A: When the sedimentary rock beds are found to have been deposited without interruption, they are said…

Q: Explain how waves erode and move sediment along the shore.

A: More erosion is brought on by larger waves and more sediment carried by them. Below are the…

Q: Explain how the Sun, Earth and Moon are positioned relative to each other during a new moon and how…

A:

Q: What are the different reuse/recycling techniques that we can do in order to minimize the quantity…

A: Recycling forestalls the emanations of numerous ozone harming substances and water toxins, and…

Q: Distinguish between porosity and permeability.

A: Porosity and permeability are the two properties of rocks and soil.Porosity and porousness are…

Q: Why is wind erosion relatively more important in dry regions than in humid areas?

A: The role of wind in sculpturing the earth's surface is no doubt someone less than that of the other…

Q: Under certain conditions, one species may evolve into an entirely new species. What is this process…

A: Evolution is a complex process through which living organisms, originated from the non living matter…

Q: Coarse sediments are more common in regions near the transitional region between rivers and oceans.…

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the…

Q: Sketch and label four simple diagrams that illustrate each of the following: superposition, original…

A: The four laws of stratigraphic successions proposed by Nicholas Steno are: Principle of…

Q: What are biodegradable wastes and the usual wastes that could harm our environment? How can we keep…

A:

Q: 1. If you have a rock that has a Ceratite in it what time period(s) is it from? How do you know? 2.…

A: Use your fossil range chart to answer questions maximum:-  If you have a rock that has a Ceralite…

Q: The Earth revolves around the Sun.* 1/1 True O False

A: The Earth is the planet of a Solar system. The Sun is a star of the solar system. The Sun is a main…

Q: The gradient is steeper at the mouth of a river. A) Steepest B) True C) Gentler D) Either gentle or…

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the…

Q: Characterize major global biomes and ecosystems by their general characterisitics of moisture,…

A: A biome is a particular biogeographical unit comprising of a natural local area that has shaped…

Q: Use the Venn diagram to compare and contrast the characteristics of wind action and glacial…

A: Weathering is the breakdown of the Earth surface into smaller fragments through the action of wind,…

Q: How might building a dam on a river that flows to the sea affect a coastal beach?

A: Dams are artificial structures constructed on rivers or streams to hold back water for human needs…

Q: Distinguish between numerical and relative dating and apply relative dating principles to determine…

A: A stratum is the thinnest distinct rock layer observable in any local succession. Stratum is a layer…

Q: Which side of an advancing hurricane in the Northern Hemisphere has the strongest winds and highest…

A: Tropical cyclones are powerful, rotating wind system with low-pressure centre which generates over…

Q: What might happen if all the mice died?

A: ANSWER: If all the mice died, then there would be a major disaster in the world.