1. The carbon in a buried peat bed has about 6% of the C-14 of modern shells. When the plants that now form the buried
peat were alive, they absorbed C-14 and probably had about the same amount of C-14 as modern shells, so about 94% of
the peat's original C-14 has decayed. What is a reasonable initial estimate of the age of the peat bed? Explain,
2. In sampling the peat bed, you must be careful to avoid any young plant roots or old limestone. Why?

Answers

Answer 1

Based on the percentage that has decayed of the peat's original C-14, a reasonable estimate of the age of the peat bed is 22,880 years.

We should be careful to avoid old limestone because it contains carbon that will help in finding the age of the peat bed sample. Same goes for the young plant roots.

What is an estimate of the age of the peat bed?

This can be found as:
= Half life of C-14 x Number of half lives that have passed

Number of half lives that have passed based on 6% being left of the orginal sample will be 4 half lives.

Estimate of age:

= 5,720 x 4

= 22,880 years.

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Related Questions

What is an environmental criticism of solar panels for electrical power?

They create too much noise in areas where present.
They are not cost effective in the long-term.
They can disrupt flying patterns of birds.
They require large areas of land to be cleared.
They are not suitable for residential housing.

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They create too much noise in areas where present.

HELP 11 and 12 please!

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11A 12A
11 needs to know the climate of this area was tropical rainforest climate, which is always hot and wet
12 Mexico is a developing country and its unemployment issue is serious so many people gather here to seek for jobs

Which of these causes mechanical weathering?
Group of answer choices

root action / root wedging

oxygen

acids

chemicals

Answers

Answer:

root action / root wedging

oxygen

please make this answer brainliest If I helped you!

Japan's population is __________ and __________.
Group of answer choices

shrinking and getting younger

increasing and aging

shrinking and aging

increasing and getting younger

Answers

Answer:

Japan's population is shrinking and aging.

Explanation:

What can the people of South Asia do to address the problem of pollution

Answers

Answer: They can start by doing something little.

Explanation:They can start by doing something little because then us americans can donate money to them or go over there and help them build and make things and do more to help them out.

Why are meteorologists sometimes wrong about the weather?

Answers

Answer:

the computer programs that calculate the forecasts don't have data from the future, so they have to rely on assumptions

Which of the following is the best evidence of uniformitarianism?
a. In 20 years, a forest in Brazil is completely destroyed by the logging industry.

b. A 50 kilometer plain at the mouth of a river was formed at a rate of 1 millimeter per year.

c. An astronomer finds evidence that the solar system is 6,000 years old.

d. An underwater volcano's eruption forms a new island in about one month.

Answers

Answer:

b

Explanation:

This shows a continuous process over years.

A 50 kilometer plain at the mouth of a river was formed at a rate of 1 millimeter per year is the best evidence of uniformitarianism. Hence, option B is correct.

What is uniformitarianism?

The belief that Earth has always changed uniformly and that the present holds the key to the past is referred to as uniformitarianism. Understanding Earth's history requires a grasp of uniformitarianism.

The landscape can change due to observable processes that occur over a long period of time, according to uniformitarianism. Examples include: * Mountain ranges can form in an area over millions of years even when earthquakes only occur periodically.

The theory of uniformitarianism was developed by Charles Lyell in the 19th century and is based on the writings of James Hutton. According to this hypothesis, the forces and processes that can be seen at the surface of the earth are the same ones that have sculpted the planet's terrain throughout natural history.

Thus, option B is correct.

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GIVING BRAINLIEST! AND 80 POINTS! ONLY FOR CORRECT ANSWER!

A new slang term has become popular among middle school students in Wisconsin. Which arrow represents the most likely path for the cultural diffusion of this term?

The graphic shows a map of the United States and all territories with four arrows. Arrow A points from Wisconsin to South Dakota. Arrow B points from Wisconsin to Oklahoma. Arrow C points from Wisconsin to Illinois. Arrow D points from Wisconsin to Maine.
Public Domain

Arrow A
Arrow D
Arrow B
Arrow C

Answers

the answer is b: points from wisconsin to oklahoma

Answer:

I think it is B

Explanation:

Cultural diffusion is the spreading of things such as products or language.

It is showing B starting to spread towards farther states

If you observed this pattern in your data while measuring wind speeds on a specific day, what could you infer about the motions of air masses in the area?

Answers

We can infer that the motions of air masses in the area have a tendency to create a new weather condition.

What is an air masses?

Its refers to the volume of air which is defined by its temperature and water vapor content.

When air masses are moved by winds, they have tendecies to create a weather conditions such as heat, cold, dry or moist.

In conclusion, a typical severe storm are created by an air mass when they reaches a new region and clashes with other air mass that has a different temperature and humidity.

Note: The question is incomplete, that the reason i explained what is air mass and its effects.

Read more about air masses

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how does a steep pressure gradient influence south african berg winds​

Answers

When the air that has been heated on the extensive central plateau flows down the escarpment to the coast it undergoes further warming by adiabatic processes.

South African berg winds are influenced by a large pressure gradient that is warmed by isothermal processes.

What are berg winds​?

From the high great plains to the coast, the berg wind blows down the Great Hillside. The middle plateau of Southern Africa, which is primarily dry and frequently arid, is where berg winds develop rather than where precipitation occurs.

When the convective heat from the central plateau travels to the shore, it continues to increase due to adiabatic processes and is accompanied by coastal lows.

When there is a low-pressure system along the coast and a high-pressure system over the continent, berg winds are most common on South Africa's west coast from April to September.

This type of wind creates problems for taking off on airplanes due to its speed and making them difficult to take off or landing.

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what is purpose of the monitoring​

Answers

Answer:

Its goal is to improve current and future management of outputs, outcomes and impact. Monitoring is a continuous assessment of programmes based on early detailed information on the progress or delay of the ongoing assessed activities.

Explanation:

hope it helps..

Its goal is to improve current and future management of outputs, outcomes and impact. [tex][/tex]

38/-97 latitude/longitude

Answers

Lines of latitude and longitude are used to locate various areas on the surface of the Earth.

What are lines of latitude and longitude?

These are imaginary lines that are drawn across the surface of the Earth which allow us to locate various areas. Lines of Latitude are drawn horizontally and lines of longitude are vertical.

To find a location, one can check the lines of latitude and longitude that cross it.

For instance, Latitude 38 and Longitude 97 refer to a place in China.

Note: Question wasn't complete so I gave a brief overview of latitudes and longitudes.

Find out more on latitudes at https://brainly.com/question/24460166.

Which situation represents a business benefiting from global trade?

A company creates new regional jobs.
A company has new multinational consumers.
A company invests in several business ventures.
A company becomes more successful and self-reliant.

Answers

Answer:

A company creates new regional jobs. or A

Explanation:

got it correct on Edge 2022

Answer:

A

Explanation:

EDG 2022

What is the ozone depletion? ​

Answers

Answer:

When bromine and chlorine atoms come into contact with ozone in the stratosphere, they destroy ozone molecules.

One chlorine atom can destroy over 100,000 ozone molecules before it gets removed from the stratosphere. Ozone is being destroyed faster than it can naturally created.

Explanation:

Which group of plants were the first to adapt to life on land?

Flowering
Pine
Mosses
Conifers

Answers

Answer:

choice C: mosses

Explanation:

C) Mosses were the first to adapt to life on land.

How did moss adapt to life on land?

The most vital variation to land lifestyles that mosses have in commonplace with different land vegetation is the presence of a skinny cuticula that protects them in opposition to loss of water. single-mobile and multicellular rhizoids resembling root hairs can be determined.

The fossil document and experimental evidence strongly propose that liverworts are most of the first vegetation that colonized terrestrial environments and that they have hence been considered as dwelling laboratories in which to evaluate morphological edition associated with the transition to lifestyles on land.

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A group of events or individuals that represent a population is a(n)

Answers

Answer:

Sample

Explanation:

Samples are used in statistical testing when population sizes are too large for the test to include all possible members or observations. A sample should represent the population as a whole and not reflect any bias toward a specific attribute.

use of coast for work and leisure
good affects bad effects on the environmet
i need 5 or more
FAST

Answers

Answer: mark as brainliest

Explanation:

А ___________ consists of a star and all of the bodies in orbit around it.

Answers

Answer:

solar system

Explanation:

Hope that helps!

Answer:

A Solar system consists of a star and all of the bodies in orbit around it.

Explanation:

i put it in answer form for you

:)

advantages and disadvantages of
sea walls
artificial reef
breakwaters
groynes
draining cliffs
barrages
managed retreats
PLEASE ANSWER I'M DYING PLEASE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

So the advantages of a sea wall are pretty much that the sea wall protects the base of a cliff from erosion. And in some areas they prevent coastal flooding. But the disadvantages of the sea wall are that they are very hard and expensive to maintain. These walls are also sorta unattractive.

Explanation:

Am to

Culture has a unique
dichotomy
explain

Answers

Explanation:

Ever since, capitalism and conservation have shared much of the same ideological DNA. Take the nature-culture dichotomy—the idea that nature is somehow external to humans. Capitalists have long used that idea to justify treating nature as an object to be manipulated in the pursuit of endless economic growth.

PLAESE HELP
Which fossil fuels are found underground in reservoirs and require pumps to remove?



coal


petroleum (oil)


natural gas

Answers

Answer:

petroleum (oil)

Explanation:

Oil pumps extract petroleum(oil) from underground.

Answer: Petroleum oil

Explanation: i took the tet and got an 100%


Which bodies of water is the largest of Arctic Ocean Red Sea Indian Ocean and Baltic Sea

Answers

Answer:

Indian Ocean

Explanation:

Arctic Ocean= Area: 5.427 million mi²

Red Sea= Area: 169,113 mi²

Indian Ocean= Area: 27.24 million mi²

Baltic Sea= Area: 145,561 mi²

What can a s waves pass through?

A: molten
B:solid
C:tarry

Answers

Answer:

solid

Explanation:

When an earthquake occurs, it makes seismic waves, which cause the shaking we feel. Seismic waves are essentially just the jiggling of the ground in response to the force put on the ground by the earthquake, similar to the way the jello in a bowl responds to a tap to the side of the bowl. There are three major kinds of seismic waves: P, S, and surface waves. P and S waves together are sometimes called body waves because they can travel through the body of the earth, and are not trapped near the surface.

Electromagnetic waves are invisible forms of energy that travel though the universe. However, you can "see" some of the results of this energy. The light that our eyes can see is actually part of the electromagnetic spectrum.

This visible part of the electromagnetic spectrum consists of the colors that we see in a rainbow - from reds and oranges, through blues and purples. Each of these colors actually corresponds to a different wavelength of light.

Electromagnetic waves

The sound we hear is a result of waves which we cannot see. Sound waves need something to travel through in order for it to move from one place to the next. Sound can travel through air because air is made of molecules.

These molecules carry the sound waves by bumping into each other, like dominoes knocking each other over. Sound can travel through anything made of molecules - even water! There is no sound in space because there are no molecules there to transmit the sound waves.

Electromagnetic spectrum

Electromagnetic waves are not like sound waves because they do not need molecules to travel. This means that electromagnetic waves can travel through air, solid objects and even space. This is how astronauts on spacewalks use radios to communicate. Radio waves are a type of electromagnetic wave.

Electricity can be static, like what holds a balloon to the wall or makes your hair stand on end. Magnetism can also be static like a refrigerator magnet. But when they change or move together, they make waves - electromagnetic waves.

Electromagnetic waves are formed when an electric field (which is shown in red arrows) couples with a magnetic field (which is shown in blue arrows). Magnetic and electric fields of an electromagnetic wave are perpendicular to each other and to the direction of the wave.

When you listen to the radio, watch TV, or cook dinner in a microwave oven, you are using electromagnetic waves. Radio waves, television waves, and microwaves are all types of electromagnetic waves. They only differ from each other in wavelength. Wavelength is the distance between one wave crest to the next.

Waves in the electromagnetic spectrum vary in size from very long radio waves the size of buildings, to very short gamma-rays smaller than the size of the nucleus of an atom. Yet their size can be related to their energy.

The smaller the wavelength the higher the energy. For example, a brick wall blocks visible light wave lengths. Smaller, more energetic, x-rays can pass through brick walls, but themselves are blocked by denser material such as lead.

While it can be said waves are "blocked" by certain materials, the correct understanding is that wave lengths of energy are "absorbed" by objects, or not. That is, wave length energy can be absorbed by certain material.

We use this knowledge in weather satellites as the atmosphere also absorbs some wave lengths while allowing others to pass through.

HELP ASAP FOR BRAINLIEST

Does anyone know what this is a map of??!!!

Answers

It's a Map of Africa, Asia, and Australia Showing where the grasslands are at and the drylands at its a landscaping map.

Please Give Me 5 stars and a heart

Why are there so many ethnic groups in South East Asia?
I will reward you if you answer this.

Answers

Answer: Southeast Asia is a geographically expansive and populous region characterized by fascinating social and cultural variation. Particularly striking to the outside observer is the region’s ethnic and religious diversity. The majority of the countries in this region are home to dozens of different ethnic groups, many with their own distinct languages, cultures, and styles of dress. Many of these groups have their own systems of religious belief and practice as well.

Explanation: Hope it helps :)

QUESTION
* Differentiate between early and modern cartography

Answers

Answer:

You gather all the information about both

You sort it into groups of same or different

You weren’t expecting us to do your homework for you, were you?

That would be cheating.

Explanation:

hope its help

Know the five places of MexAmerica and what each of them are known for.

Answers

Answer: Mexico can be divided into nine major physiographic regions: Baja California, the Pacific Coastal Lowlands, the Mexican Plateau, the Sierra Madre Oriental, the Sierra Madre Occidental, the Cordillera Neo-Volcánica, the Gulf Coastal Plain, the Southern Highlands, and the Yucatán Peninsula

Explanation:

can somebody help me out

Answers

Answer:

B

Explanation:

It was in textbook when studying

how many countries are there in the world?​

Answers

Answer:

There are 193 countries in the entire world.


Why is understanding the
structure of the earth important?

Answers

The understanding of the structure of the earth is important as it helps to learn about Earth's interior and exterior processing.  

Why is Earth's structure important to know?

Earth structure explains the formation of volcanoes, mountains, and islands due to tectonic plates. It helps to know about movements in the mantle and chemical composition below the earth's surface.

Thus, any disasters such as volcanoes and droughts could be predicted by scientists.

Learn more about Earth structure here:

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