Scientists find trilobites during a routine dig. Trilobites were common in the Paleozoic Era (540 to 245 million years ago) and went extinct during the late Permian period (248 million years ago). On another site, the scientists find ammonites. Ammonites lived during the Mesozoic Era (245 to 65 million years ago) and are not found after that period. What can be concluded about the rock layers? Choose all that apply.


A The rock layers must have formed at the same time because they both contain biozones.


B The rock layer containing the trilobites must have formed before the one containing the ammonites.


C The rock layer containing the trilobites must have formed after the one containing the ammonites.


D The rock layers must have formed at different times because they contain two different biozones.

Answers

Answer 1

Answer:

A and C

Explanation:

The rock layers must have formed at different times because they contain two different biozones. The rock layer containing the trilobites must have formed before the one containing the ammonites. The key thing to note here is that the Trilobites only lived from 540 to 248 million years ago. And that the Ammonites were from 245 to 65 million years ago. So there's a 3 million year gap between these 2 different creatures where neither of them existed. So the dig where the trilobites were found has to be at least 3 million years older than the dig where the Ammonites were found. So with that in mind, let's look at the options and see what makes sense.

The rock layers must have formed at the same time because they both contain biozones. * This is nonsense no matter what dates you're speaking of. In effect it claims that all rocks that indicate life were created at the same time. So this is definitely a bad choice.

The rock layers must have formed at different times because they contain two different biozones. * This is technically incorrect since it assumes that all biozones represent an unique period of time which is incorrect. However, since the biozones represented by the presence of Trilobites and Ammonites don't overlap, it is true that these these rock layers were formed at different times. I would have preferred if this option said "non overlapping biozones". But on the balance, I'd consider this option to be true, so it should be selected.

The rock layer containing the trilobites must have formed before the one containing the ammonites. * This is definitely true since the last Trilobite died about 3 million years before the first Ammonite lived. So this is a correct choice.

The rock layer containing the trilobites must have formed after the one containing the ammonites.

* This is the opposite of the previous option. And since the previous option was true, this option must be false. So this is a bad choice


Related Questions

Which could be a form of bias in a map?
Check all that apply.
A. When average incomes are given as a single number for an entire
state
B. When west is depicted as being toward the top of the map
C. When cities are shown in yellow and countryside shown in green
fish
D. When fishing industry is shown with an icon depicting a dead

Answers

Answer:all of these apply

Explanation:

Answer:

All of them are factors

Explanation:

<3 i got it right

Explain why the rapid growth of megacities such as those shown in the figure may cause social challenges. (4pts)

Answers

Answer:

Uh Hello mate

Explanation:

The rapid growth of megacity populations result in significant challenges in accomodating people. homelessles, squatting and slum areas are all common place. Slums often form in the least desirable places. Megacities are well know for containing slums, areas of makeshift or substandard housing.

Will give brainliest to best answer(s)!!

Answers

1. Since these materials are greatly valued to make these popular products, the country mining these metals should have a good economy. Due to companies needing to purchase the mined metals in order to make products with the metals.

2. The economy in other countries without these metals would be lower. Unless they have valued goods that would higher their economy.

3. If mining increases, they would most likely be working on land that has potential for housing, businesses, etc. Due to the land loss for those potential structures the population would be lower since there is less land to accommodate increased population.

Which of Earth's layers is just below the crust?
lower or upper ?

Answers

Answer:

Explanation:

Lower

Lower layer which is called mantle and it consists of rocks and heat


Which best paraphrases why the prince is angry with Capulet and Montague?
Their servants were left unattended on the street.
They were supposed to come see him on this day.
Their families have recently started three street fights.
They were supposed to leave the town of Verona.

Answers

Answer:

The two families have been fighting three times in the streets

Explanation:

Three civil brawls, bred of an airy word,

By thee, old Capulet, and Montague,

Have thrice disturb'd the quiet of our streets,

And made Verona's ancient citizens

Cast by their grave beseeming ornaments,

Answer:

C. Their families have recently started three street fights.

Explanation:

Which of the following factors does NOT contribute to Turkey's economy? hydroelectric power textiles oil manufacturing

Answers

Answer:

power textiles has to be the answer

Answer:

oil

Explanation:

Why do you think the French allowed Napoleon to proclaim himself emperor? Explain your reasoning.

Answers

Answer:

Napoleon's motivations for being crowned were to gain prestige in international royalist and Catholic circles and to lay the foundation for a future dynasty.

Explanation:

Napoleon's elevation to emperor was overwhelmingly approved by the French citizens in the French constitutional referendum of 1804. Among Napoleon's motivations for being crowned were to gain prestige in international royalist and Catholic circles and to lay the foundation for a future dynasty.

Is phrenology an example of science or pseudoscience? Explain your answer.

Answers

Answer:

Phrenology is today recognized as pseudoscience.

Explanation:

Answer:

Phrenology is an example of pseudoscience. It is based on beliefs rather than facts. In addition, it is based only on criminals and patients with bumpy heads and ignores current scientific knowledge that many parts of the brain affect a person’s personality and behavior.

Explanation:

I copied this off edgenuity

What is the correct definition of a settlements' 'Situation'?
(1 Point)

- The actual location of a settlement on the Earth

- An area of very poor housing, often self built by residents.

- The location of a place relative to its surroundings and other places.

- The central area of a city

Answers

Answer:

3

Explanation:

The situation of a settlement is the description of the settlement in relation to physical features around it and other settlements. The situation of a settlement is the most important in determining whether it grows to become a large city or stays as a small town or village.

What are the 4 sources of climate change evidence?

Answers

Answer:

"Scientific evidence is clear that our climate is changing

direct surface temperature measurements. changes in rainfall and weather patterns. an increase in the frequency of extreme weather events. loss of Arctic sea ice."

Loss of arctic ice, hurricanes and more occurring storms, snow in places it doesn’t snow/ rain in places it doesn’t rain, droughts and floods, it has to always snow on Christmas now in the areas that expect snow during Christmas sometimes they don’t get it (Canada, Russia some parts of the USA, Australia and more)

What does an atom's nucleus contain ?

Answers

Answer:

If contains neutrons, which have no charge . Protons which have a positive charge and electrons wh h have a negative charge . These are all called subatomic particles .

Explanation:

Hope it helps out !

Answers:

Nucleus contains proton and neutrons.

Explanation:

It is the small, dense part consisting of protons and neutrons at the middle of an atom.

Hope it helps.

Where is 90 percent of Earth's ice found?
O A. North Pole
O B. Arctic Circle
O C. Antarctica
D. Siberia

Answers

The answer would be C because 90% of the earths ice is found in Antarctica

Answer:

It is Antarctica

Explanation:

Because Antartica is the coldest reigon

Explain the impacts of uneven development

(4 Points)

Quick response to be marked BRAINLIEST!

Answers

Answer: There are many answers here is what I can comprehend

Explanation:

There are problems with UNEVEN DEVELOPMENT that directly affect people's quality of life and standard of living. These are known as INEQUALITIES - extreme differences between poverty and wealth, as well as in peoples' well being and access to things like jobs, housing and education.

Which conjunction about whole numbers is true?

Answers

Answer: The sum of two even numbers is even and greater than addends

Explanation:

Which must be true for metamorphism to occur?
A. The parent rock must be in liquid form.
B. The parent rock must be igneous.
C. The process must take place underground.
D. The grain size must become smaller.

Answers

The parent rock must be in liquid form, must be true for metamorphism to occur. Hence, option A is correct.

What is  parent rock?

Parent rock is the fundamental rock that something else was produced from. It is mostly applied in the context of soil formation, where the parent rock typically has a significant impact on the final soil's composition.

Sandstone, shale, and limestone fall within this category. Metamorphic rock is the last type of parent rock. Extreme heat or pressure have resulted in the formation of metamorphic rocks. As a result, igneous or sedimentary rock changes in composition.

Thus, option A is correct.

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Answer:

It's actually "The process must take place underground"

Explanation:

The previous answer is wrong as the rock must be solid not liquid. Also I got it right on the quiz so hopefully this helps.

Explain how scientific knowledge is developed when people make observations about the natural world.

Answers

We typically think of observations as having been seen "with our own eyes," but in science, observations can take many forms. Of course, we can make observations directly by seeing, feeling, hearing, and smelling, but we can also extend and refine our basic senses with tools: thermometers, microscopes, telescopes, radar, radiation sensors, X-ray crystallography, mass spectroscopy, etc. And these tools do a better job of observing than we can! Further, humans cannot directly sense many of the phenomena that science investigates (no amount of staring at this computer screen will ever let you see the atoms that make it up or the UV radiation that it emits), and in such cases, we must rely on indirect observations facilitated by tools. Through these tools, we can make many more observations much more precisely than those our basic senses are equipped to handle.

Tools like the Hubble Space Telescope, microscopes and submersibles help us to observe the natural world.

Observations yield what scientists call data. Whether the observation is an experimental result, radiation measurements taken from an orbiting satellite, an infrared recording of a volcanic eruption, or just noticing that a certain bird species always thumps the ground with its foot while foraging — they're all data. Scientists analyze and interpret data in order to figure out how those data inform their hypotheses and theories. Do they support one idea over others, help refute an idea, or suggest an entirely new explanation? Though data may seem complex and be represented by detailed graphs or complex statistical analyses, it's important to remember that, at the most basic level, they are simply observations.
Observations inspire, lend support to, and help refute scientific hypotheses and theories. However, theories and hypotheses (the fundamental structures of scientific knowledge) cannot be directly read off of nature. A falling ball (no matter how detailed our observations of it may be) does not directly tell us how gravity works, and collecting observations of all the different finch species of the Galapagos Islands does not directly tell us how their beaks evolved. Scientific knowledge is built as people come up with hypotheses and theories, repeatedly test them against observations of the natural world, and continue to refine those explanations based on new ideas and observations. Observation is essential to the process of science, but it is only half the picture.

Answer:

Scientific knowledge is developed when people make observations about the natural world. An observation may generate a scientific question, which may lead to a hypothesis. The hypothesis can be tested through experimentation. The results of the experimentation may lead to changes in scientific knowledge.

Explanation:

________ is an increase in average temperatures around the planet

Answers

Answer:

One of the most immediate and obvious effects of global warming is the increase in temperatures around the world. The average global temperature has increased by about 1.4 degrees Fahrenheit (0.8 degrees Celsius) over the past 100 years, according to the National Oceanic and Atmospheric Administration (NOAA).

Explanation:

Answer: global warming

Explanation:

How are primary consumers different from secondary
consumers?
А
Primary consumers eat only plants; secondary consumers
eat other consumers.
В
Primary consumers eat other consumers; secondary
consumers eat only plants.
С
Primary consumers eat plants and other consumers;
secondary consumers eat plants and decompose matter.
D
Primary consumers eat plants and decompose matter;
secondary consumers eat plants and other consumers.

Answers

Answer:

yikess ion know i jus wanna comment on someone shii

Explanation:

Answer:

Correct answer is c       PLEASE MARK BRAINLIEST!!!!!!!!!!!!!!!

Explanation:

Explain one reason why informal employment has grown rapidly in some cities.

(2 Points)

FASTEST ANSWER = BRAINLIEST AND 5 STAR

Answers

Answer:

Informal employment has grown rapidly in some cities due to the point that the population of some cities are rrapidly increasing in population, therefore there are not enough proper jobs for the population so some have to resort to informal employment.

Explanation:

Answer:

Answer: taxation and regulation

when taxation and regulation make legal production and trading very expensive people turn more and more illegal production

DEAR STUDENT

I HAVE ANSWERED YOUR QUESTION SO NOW AS U SAID IF SOMEONE ANSWERS YOU MARK HIM/HER AS BRAINLIEST SO PLEASE MARK ME AS THE BRAINLIEST

The approximate astronomical distance between Earth (in the Milky Way Galaxy) and the Andromeda Galaxy is 2.5 million _____.
A. AUs
B. parsecs
C. kilometers
D. light-years

Answers

Answer:

D. Light years

Explanation:

Help on this and write the 3 of the types of subsistence agriculture

Answers

Answer:

1.

2.

hope this helped you

When referring to the United States, “the South" is a

Answers

Answer:

Mostly states such as Alabama, Arkansas, Louisiana, Missouri, Georgia, Tennessee, Texas all of which are grouped in the south part of the United States.

Explanation:

“The South” when referring to the United States is made up of states such as Louisiana, Alabama, Arkansas, Delaware, Florida, Georgia, Kentucky, Maryland, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia, and West Virginia as defined by the U.S. federal government.

How many branches of government did the Roman Republic have?
one
two
three
four
Tweaks

Answers

they had three branches

Answer:

3

Explanation:

Help! Please answer correctly.

Answers

Explanation:

Climate - Varoesnfrom season to season

Terrian and major land formation - Landforms

The region that Alaska is located in is said to be one of the most geologically active areas in all of North America. This factor can be attributed to building a lot of the landforms that are located in Denali National Park.

Not sure of the rest sorry

What is the average of all data points in a data set? the mean the median the mode the range

Answers

Answer:

Mean

Explanation:

The arithmetic mean, also called the expected value or "average", as in your case is what the answer to your question should be.

The mean is the average of all data points in a data set. Hence, option A is correct.

What is meant by data points?

The phrase “data point” generally corresponds to the singular form of data, or datum. It is the actual data obtained from a measurement or research, and in a statistical or analytical setting, it might be shown as a numerical data point, a statistical presentation, or a graph.

A collection of one or more measurements taken on a single member of the observational unit is referred to as an observation or data point.

In a study of the variables that influence the need for money using the individual as the unit of observation, the values of income, wealth, age of the individual, and the number of dependent would be examples of data points.

Thus, option A is correct.

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What are some advantages to an oligarchic form of government?

Answers

Answer:

Power is centralized within a leadership team, rather than involving everyone in every decision.

People can participate in activities, relationships, and work while the group in power handles the larger issues of the society.

An oligarchy strives to keep the status quo, which breeds conservatism instead of taking on risky ventures.

It can foster creativity and innovation because people are free from worries about running society.

Answer:

Oligarchy allows citizens to have the time to focus on their daily lives, more creative technologies to be created.

This is because oligarchy gives power to a group of experts which makes the government function properly .

Overall mineral crystal size depends on how fast a solution
O A. warms
O B. sinks
O C. cools
O D. rises

Answers

Answer:

C. cools

Explanation:

C. I hoped this helped

Who developed a heliocentric model with elliptical orbits?

Answers

Johannesburg Kepler
Johannesburg Kelper

which best describes Europe and southwest Asia?
A- located in the western part of Eurasia
B-located east of the pacific ocean
C-located in the southern hemisphere
D-located in the western hemisphere

Answers

The correct answer will be A , it’s located in the western part of Eurasia

Which best compares and contrasts how John Newlands and Dmitri Mendeleev organized elements?
Both Newlands and Mendeleev arranged elements according to their chemical properties, but only Newlands used a
mass as well.
O Both Newlands and Mendeleev arranged elements according to their atomic masses, but only Mendeleev used cherr
properties as well
Both Newlands and Mendeleev organized elements into groups, but only Newlands used a table with rows and column
Both Newlands and Mendeleev organized elements into a table with rows and columns, but only Mendeleev named
different groups of elements.

Answers

The correct answer is B. Both Newlands and Mendeleev arranged elements according to their atomic masses, but only Mendeleev used chemical properties as well.

Explanation:

Both John Newlands and Dmitri Mendeleev were relevant chemists, mainly known for designing the period table, which organized chemical elements. In the case of Newlands, he designed his period table around 1865 by organizing the known elements based on the atomic masses of elements (number of protons and neutrons); also, he divided elements into groups.

On the other hand, Mendeleev designed his periodic table around 1869; in this, elements were also arranged by their atomic masses, but Mendeleev considered the properties of each element such as electronegativity, which implied some minor changes in order, as well as leaving some spaces for elements that had not been discovered, but that Mendelev could predict. Thus, the option that compares the organization in both periodic tables is B.

Answer:

B. Both Newlands and Mendeleev arranged elements according to their atomic masses, but only Mendeleev used chemical properties as well.

Hope it works!

Explanation:

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