Trilobites
Trilobites were crab-like animals
that lived in ancient seas.
Scientists have discovered many
trilobite fossils all over the world.
However, the fossils only appear
in rocks that are at least 250
million years old. In more recent
rocks, their fossils are absent.
1. What conclusion would you
draw about trilobites based on
their appearance and
disappearance in the fossil
record

Answers

Answer 1

Answer:

The trilobites probably disappeared because either: A) they evolved into something else, or B) they died out due to the amounts of land rising out of the ocean.


Related Questions

Which phase consistently has the least number of cell in that phase?

Answers

Answer:

Cytokinesis had the least number of cells in that phase.

EASY 7TH GRADE SCIENCE QUESTION FIRST PERSON BRAINLIEST!!!!!

A. Velocity varies with the compass direction of motion

B. Measurement error causes multiple observations of motion to conflict

C. All motion is relative to the frame of reference chosen for measurement

D. Acceleration and velocity have different values because they are different measures of motion

Answers

Answer:

C. All motion is relative to the frame of reference chosen for measurement

Explanation:

Which of the following statements supports the need for a handler to know an animal’s point of balance? A handler must know an animal’s pattern of movement in order to avoid injury. A handler must know where to stand in order to avoid injury. A handler must know proper feeding procedures in order to avoid injury. A handler must not use a loud voice in order to avoid injury.

Answers

Answer:

A handler must know an animal’s pattern of movement in order to avoid injury.

Explanation:

Point of balance refers to equalibrium so if you know the animals pattern of movemenrt you are less likely to get injured while moving on or with it.

Answer:

A

Explanation:

i got it wrong and it showed the correct answer

Shameeka is studying for an exam. She took the notes below about calcium and chlorine, which are known to form ionic bonds.

Calcium, which is a metal, donates 2 electrons to chlorine.
The individual calcium atoms become ions with a negative 2 charge.
The bond between calcium and chlorine makes the atoms stable.
Calcium and chlorine attract each other.

Which best describes Shameeka’s error?

Calcium is a metal, so it donates protons, not electrons.
The individual calcium atom has a positive, not negative, 2 charge.
The bond formed makes the atoms unstable, not stable.
Calcium and chlorine repel, not attract, each other.

Answers

Answer:

The individual calcium atom has a positive, not negative, 2 charge.

Explanation:

The error in her study is in the second line of her note which suggests that the individual calcium atoms becomes ions with a negative 2 charge.

When atom loses electrons, it has a net positive charge on it. Not a negative charge. This is because the number of protons is now more than electrons. Therefore, a net charge on the calcium atom will be a positive one. This is her mistake.

Answer:

B) The individual calcium atom has a positive, not negative, 2 charge.

Explanation:

Hope this helps. Have a good day!

Explain why enzymes are essential or important to maintaining
homeostasis in living things.

Answers

Answer:

Enzymes are proteins that catalyse (speed up) vital chemical reactions inside the body. Enzymes will only function properly under a small range of certain conditions, such as preferred pH and temperature. If any conditions are outside their specific range then the enzymes cannot function. This could cause the organism to die. Homeostasis relies on automatic control systems that include nervous responses (nervous system) or chemical responses (endocrine system). Receptors and effectors are also needed

I hope this will be useful

how far is each planet from the sun.................

Answers

Answer:

1. Mercury: 31.197 million mi

2. Venus: 66.81 million mi

3. Earth: 92.96 million mi

4. Mars: 141.6 million mi

5. Jupiter: 483.8 million mi

6. Saturn: 890.8 million mi

7. Uranus: 1.784 billion mi

8. Neptune: 2.793 billion mi

Explanation:

Hope this helps ;}

Mercury is 57,910,000 km (0.387 AU) from the sun

Venus is 108,200,000 km (0.723 AU) from the sun

Earth is 149,600,000 km (1.000 AU) from the sun

Mars is 227,940,000 km (1.524 AU) from the sun

Jupiter 778,330,000 km (5.203 AU)


Saturn 1,424,600,000 km (9.523 AU)

Uranus 2,873,550,000 km (19.208 AU) 51,118 km

Neptune 4,501,000,000 km (30.087 AU)

Why do sparkles come off of TY Beanie Boos?
How do you prevent this incident?

Answers

Answer:

put it on a shelf and keep it there and the sparkles wont come off <3

Explanation:

Answer:

The older they get the more sparkles they loose

Explanation:

Maybe keep them in a container or a box where it will delay them loosing saprkels. And dont wash them

Which would have most likely stopped Mendel from finding a pattern in his
results?
A. If having a wrinkled seed had been a recessive trait
B. If garden peas had used sperm and egg to reproduce
C. Being short is a recessive trait
D. If seed color and shape were located on the same chromosome

Answers

Answer:

D. If seed color and shape were located on the same chromosome

Explanation:

If seed color and shape were located on the same chromosome, they would not be inherited independently of one another.

Genes on the same chromosome are more likely to be inherited together. The only way they could be inherited independently is if crossing over occurred between the two genes.

Therefore, this would argue against Mendel's law of independent assortment.

Answer:

Answer:

D. If seed color and shape were located on the same chromosome

Explanation:

AP3X

Over the course of an individual's life, personality is _________
A. remarkably stable in the long term
B. constantly changing between stages
C. impossible to reliably measure
D. capable of both change and stability

Answers

Answer:

On ed2020 its D

Explanation:

In individual's life, personality is capable to change and also being stable over the course of development, hence option d is correct.

What is personality?

At other words, rather than a progressive growth, development happens in different levels. The term "development" has a favorable meaning, its meaning varies depending on how it is used.

Typically, the word "development" indicates growth, it refers to a time when things transform and develop. Additionally, it tends to encourage people to reach their maximum potential.

Therefore, it may also refer to a different interpretation of an earlier occurrence, personality can change or be stable, hence option d is correct.

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The theory of spontaneous generation held that living could arise from nonliving matter and that such processes were commonplace and regular. Observe Pasteur’s experiment. Does his experiment support or weaken the idea of spontaneous generation?

Answers

Answer:

It weakened the idea of spontaneous generation

Explanation:

I had this question on my test last week

How do scientists organize existing scientific information?
A. By classifying objects or events by their characteristics
B. By publishing research results in a journal
C. By starting a new research project
O D. By reading about other scientists' research
SUBMIT

Answers

Answer:

A

Explanation:

Answer:

A. By classifying objects or events by their characteristics

Explanation:

what process is responsible for initiating this cycle

Answers

Answer:

In addition, the way in which a cell processes its RNA transcripts and newly made ... very beginning of the protein production process — the initiation of transcription. ... The eukaryotic cell cycle provides a good example of how protein breakdown is ... Such developmental patterns are responsible for the variety of cell types

Explanation:

Hope this helps

Why don't we all look the same if all humans have the same number of chromosomes
that contain the same genes?

Answers

Answer:

A small number of genes are slightly different in everyone which results in everyone looking different from one another. Each person has two copies of each gene, one from your mother and father which makes you look somewhat alike. Their are alleles that have small differences in them which are different from someone elses DNA bases which make you look different.

Explanation:

what is the average for a human piens
A 2.inc
B 4inc
C 10 inc
D 1 feet

Answers

Answer:

the average size is 4 inch. I think

Answer:

B. 4in

Explanation:

I'm not sure, and I don't want to look it up.

But that's the most reasonable.

2 is too small, 10 in is to big and 1 foot is to big.

I need help in this I’m confused

Answers

Answer:

A

Explanation:

see, if the beetle population decrease. the green plants will have nothing that eats them so they will increase. but since the owl's existence depends on every other organism to the left, any decrease will affect is negatively.

hurry due in 5 min plz help

Answers

the first one, urbanization
Urbanization because none of the others are correct

Water cannot change rock underneath earth surface (true or false)

Answers

Answer:

false because water is what made the canyons a canyon, water,

so it is false

Explanation:

1.The open area of DNA where replication or transcription can take place is called A.replication Bubble B.replication form c.replication strand d.replication origin
2. Once the two strands of DNA are separated, what prevents them from assuming their double- helical shape? A.Other proteins hold the strands apart B.They are too far away from each other C.Each strand has opposing charges, which keep them repelled D. All of the above
3.How does DNA polymerase move along each strand of DNA? A.Both move towards the replication fork B.Both move away from the replication fork C.One moves towards from the replication fork and the other moves away from it D.There is only one DNA polymerase on the DNA at a time
4.How can each copy of DNA at the end of replication be compared? A.Each copy is identical to each other B.Each copy is different from each other C.They are 90% similar D.They are 50% similar
5.In the event of a mismatched nucleotide , which molecule is able to backtrack , "proofread ," and correct the nucleotide sequence? A.DNA Proofreadase B.DNA Polymerase C.DNA Helicase D.DNA Primase

Answers

Answer:

1) Transcription Bubble.

2) Replication Forks

3)

Explanation:

1) The region of opened- up DNA is called a Transcription Bubble. In transcription, a region of DNA opens up. One strand, the template strand, serves as a template for synthesis of a complentary RNA transcript.

2) The Replication Forks hold the 2 separated strands of DNA apart, preventing then from assuming their double helix shape... in order  to replicate all your DNA its faster to replicate DNA if your doing it in many different areas at the same.

3)Since DNA polymerase requires a free 3` OH group  for initiation of synthesis, it can synthesize in only one direction by extending the 3` end of the preexisting nucleotide chain. Hence, DNA polymerase moves along the template strand in a 3`-5` direction, and the daughter strand is formed in a 5`-3` direction.

I don't know 4 and 5

The answers to the following questions are:

Replication bubble.Replication fork One moves towards from the replication fork and the other moves away from it..Each copy is identical to each otherDNA Polymerase

What is DNA replication?

A double-stranded DNA molecule is copied to create two identical DNA molecules through the process of DNA replication. Because every time a cell splits, the two new daughter cells must have the same genetic material, or DNA, as the parent cell, replication is a crucial process.

A particular kind of enzyme called DNA polymerase (DNAP) is in charge of creating fresh nucleic acid molecules that are copies of the original DNA. Polymers are huge compounds consisting of smaller, repeating units that are chemically linked to one another. Nucleic acids are polymers.

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Use Demetri's results to explain how temperature affects enzymes

Answers

Answer:

As with many chemical reactions, the rate of an enzyme-catalysed reaction increases as the temperature increases. However, at high temperatures the rate decreases again because the enzyme becomes denatured and can no longer function. ... As the temperature increases so does the rate of enzyme activity.

Explanation:

How many more cherry pies have 60 to 89 cherries than 90 to 119 cherries?

Answers

Answer:

They are the same thing

6 pies are more in 60 to 89 cherries than 90 to 119 cherries, a bar graph is a graphical depiction of information, amounts, or numbers using bars or strips.

How to depict the bar graph?

They are employed to contrast and compare various data kinds, frequencies, or other measurements of several categories of data.

The calculation of the bar graph in the given question.

For 60 - 89 cherries there are 10 pies

For 90 -119 cherries there are 4 pies

10 -4 = 6  pies

The image for the graph is attached below.

When displaying sections of data, bar charts should be used. As long as there aren't too many categories to compare, vertical bar charts can be useful for comparing several categories or discrete data, such as age groups, classes, schools, etc. They are quite helpful for time series data as well.

Therefore, there are 6 more pies in the 60 -89 cherries category than in the 90-119 category.

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What are the cell types of these structures? 20 points and marked brainliest
Nucleus

Nuclear Envelope

Nucleolus

Ribosomes

Cytoplasm

Plasma Membrane

Cell Wall

Prokaryote

Eukaryote

Rough ER

Smooth ER

Golgi Apparatus

Vacuoles

Lysosomes

Chloroplasts

Mitochondria

Cytoskeleton

Microtubules

Microfilaments

Flagella

Cilia


AGAIN PLEASE NAME THE CELL TYPES!!! 20 POINTS AND MARKED BRAINLIEST!!

Answers

Answer:

Although cells are diverse, all cells have certain parts in common. The parts include a plasma membrane, cytoplasm, ribosomes, and DNA.

which of the following identifies this phenomenon and explains how it is formed

Answers

Answer:

A phenomenon, in a scientific context, is something that is observed to occur or to exist.

Explanation:

Examples of natural phenomena include gravity, tides, biological processes and oscillation.

Social phenomena are those that occur or exist through the actions of groups of humans. there is also difference between it and the natural phenomenon.

natural phenomenon - all phenomena that are not artificial. phenomenon - any state or process known through the senses rather than by intuition or reasoning.

Which process takes longer, primary succession or glacial retreat?

Answers

Answer:

I think it is primary sucession

Explanation:

the process takes a long time

15. Each of the following is a density-dependent limiting factor EXCEPT
A. crowding
B. competition
C. disease
D. seasonal cycles​

Answers

Answer: d, seasonal cycles

Explanation: it doesn't affect the population.

Why are fossil fuels cheaper in some places and more expensive than others?

Answers

Answer:

there could be a higher density of fossil fuels in one place, making its collection easy, where in another place, there might be a very low density of fossil fuels, making it hard to get, and therefore making it more expensive.

Explanation:

fossils aren't a blanket under the earth's crust. its spread out.

How does DNA code for traits? Explain your response

Answers

The genetic code dictates which proteins the cell manufactures. Proteins are strands of amino acids. The sequence of nucleotides in DNA genes determines the order of amino acids in a protein. This is the direct connection between your genes and your traits.

Answer: ................................................................................................

Explanation:

Match the agency with the type of event over which it takes jurisdiction.

1. Bureau of Land Management
2. Food and Drug Administration
3. United States Department of Agriculture

A wildfire is destroying national forests in California.
A farmer in Kansas wants to obtain energy from a wind farm on federal land.
An outbreak of mad cow disease is reported.

Answers

Answer:

A wildfire is destroying national forests in California.-3

A farmer in Kansas wants to obtain energy from a wind farm on federal land.-1

An outbreak of mad cow disease is reported.-2

Explanation:

Hope this helps <3

~Grey

Answer:

3 A wildfire destroying national forests in California

2 an outbreak of mad cow disease is reported

1 a farmer in Kansas want to obtain energy from a wind farm on federal land

Explanation: I got it right on a quiz that I did in the 11th grade your welcome and plz give me the Brainiest tanks

how many body systems are in eating a single bite of turkey? PLSS HELP its duo in abt 6 mins!!​

Answers

Answer:

There are 4 systems involved in this activity. these systems are: the skeletal, muscular, circulatory and digestive systems.

Explanation:

To eat a single bite of turkey it is necessary that 4 systems come into play and work together for this activity to be possible.

First, it is necessary that the turkey is brought to your mouth through the movement of its members. In that sense, the resqueletico and muscular systems will act because it is through them that the movements of the members are created.

Then you will need to bite the turkey, chew it, moisten it with saliva, swallow it and digest it. This work will be done with the digestive system that will manage all of these activities.

Finally, your body will need to absorb the elements that make up the turkey pedal that you ate and that were rescued by digestion, these elements are nutrients, proteins and others. All will be absorbed through the work of the circulatory system, which through the blood will carry the elements throughout the body.

An example of a macromolecule is a(n)
a.oxygen atom
b.monosaccharide
c.glucose molecule
d.polysaccharide

Answers

both answers b and d are macromolecules so either one would be correct. personally i would put b
I can say it is not a because that is a “regular” molecule

Respiration uses the two products from ___ to begin the process

1. Photosynthesis
2. Glycolysis
3. ATP

Answers

Answer:

Photosynthesis

Explanation:

Other Questions
Kristin has 4 more headbands than Nikki does. Together they have 30 headbands. The equation h + (h+ 4) = 30 can be used todetermine the number of headbands each girl has. What part of the equation represents the number of headbands Kristin has?A:hB:h+4C:4D:30 Gable Company uses three activity cost pools. Each pool has a cost driver. Information for Gable Company follows: Activity Cost Pool Total Cost of Pool Cost Driver Estimated Total of Cost Driver Machining $ 312,000 Number of machine hours 80,000 Designing costs 73,600 Number of design hours 8,000 Setup costs 71,600 Number of batches 500 Suppose that Gable Company manufactures three products, A, B, and C. Information about these products follows: Product A Product B Product C Number of machine hours 30,000 40,000 10,000 Number of design hours 3,200 1,800 3,000 Number of batches 50 175 275 Required:Determine the amount of overhead assigned to each product. Which one would be felt louder: a sound with a SIL of 60dB and a frequency of 40Hz or a sound with a SIL of 60dB and a frequency of 100Hz ? a) they both will appear to have the same loudness b) sound with a SIL of 60dB c) sound with a SIL of 60dB and a frequency of 1000Hz d) whichever is sounded first e) cannot say and a frequency of 40 is it hard to get a job at chik fil a? kinda stupid question ik, I just really need money. if so any recommendations? You purchased concentrated cleaner that must be diluted (watered down)before use. Container A is the cleaner, which is a 20% solution. Container B ispure water. You are mixing together the contents of Container A andContainer B to produce 80 gallons of 5% solution. How many gallons fromeach container are needed to create the 80 gallons of 5% cleaning solution?Write your answers as integers only.Container A: 20% Cleaning Solution =gallonsContainer B: Pure Water =gallons If there are 3 apples for every 4 oranges, how many apples would you have if you had 20 oranges? 8. The following system contains 20.0 psi each of gases A and B in the end bulbs with an evacuated bulb in the centre. Both stopcocks are opened at once. What is the new overall pressure in the system?I literally have no idea how to even start this, I know that the answer is 13.3 psi, but I don't have any clue why or how to get there. choose all that apply Explain how one celled organisms get oxygen in water. if f(x) = x^2+3x-2, find f(-2) During which decade did the US pursue a policy of isolationism?1910s1920s1930s1940s Write the equation in y=Mx+B Which detail from the text best provides evidence about how the north Korean government spreads its ideology? Jordie's curtain company is making curtains for a local hotel. He wants each curtain to be 36 inches long. At the fabric store, fabric is sold by the foot. If Jordie's curtain company wants to make 67 curtains, how many feet of fabric will he need? An article on polygraph testing of FBI agents indicated that the probability of a false-positive (a trustworthy person who nonetheless fails the test) is 0.25. Let x be the number of trustworthy FBI agents tested until someone fails the test. (Round your answers to four decimal places.)(a) Describe the probability distribution of x.normalgeometric binomial(b) What is the probability that the first false-positive will occur when the third person is tested?(c) What is the probability that fewer than four are tested before the first false-positive occurs?(d) What is the probability that more than three agents are tested before the first false-positive occurs? Describe three functions of an operating system Which triangle shows the incenter at point A? Which of the following values are solutions to the inequality 5 < 7+ 5x? Which lines show that Juliet is obedient? Check all that apply.How now! Who calls?Your mother.What is your will?Speak briefly, can you like of Paris love?Ill look to like, if looking liking move"No more deep will I endart mine eye / Than your consent gives strength to make it fly." wild deer population weight has standard deviation of 50 lb. What is the probability of existence of a random sample (size 100) weight within + 5 lb. of population mean weight?