A trilobite fossils has been used to tell us how life on earth has changed. Trilobite fossils are examples of?
A:mold and cast fossil
B:index fossil
C:trace fossil
D:petrified fossils

Answers

Answer 1

Answer:

B:index fossil

Explanation:

The trilobite fossils are examples of index fossils.

Index fossils are most desirable for stratigraphic construction and to predict ancient life forms on earth.

Index fossils are fossils with the following characteristics;They have short stratigraphic spanThey have a wide geographic distributionShows rapid evolutionary trends or changes.

Trilobite is one of such fossils that have the above listed properties.


Related Questions

Which body systems interact to regulate blood pressure?​

Answers

Answer:

In addition to the local control of blood flow, global control of blood flow including changes in cardiac output and control of arterial BP is mediated by the autonomic nervous system. Global neural control of arterial hypertension is essentially through the sympathetic nervous system (SNS).

Explanation:

From Google

Why does a cell use less energy to move things when they are small?

Answers

Because they don’t have to move quickly because it’s a smaller space.

Explanation:

When a cell moves quickly they are trying to take up space. So if the cell is moving in a small space then they would use less energy


Which best describes a genetic mutation to a sequence of DNA that changes the way the sequence is read?

Answers

Answer:

A frameshift mutation is a genetic mutation caused by a deletion or insertion in a DNA sequence that shifts the way the sequence is read. ... During translation, the sequence of codons is read in order from the nucleotide sequence to synthesize a chain of amino acids and form a protein.

Explanation:

What is divergent evolution, convergent evolution, and co-evolution?

Answers

Answer: Convergent evolution shows how species have evolved separately but have similar (analogous) structures. Divergent evolution demonstrates how species can have common (homologous) anatomical structures which have evolved for different purposes.

Explanation: no explanation but thats what it means

Answer:Coevolution, the process of reciprocal evolutionary change that occurs between pairs of species or among groups of species as they interact with one another. The activity of each species that participates in the interaction applies selection pressure on the others.

Explanation:

cam someone explain how this works im so confused ​

Answers

Answer:

The Green is what the sickness is and it shows who has it

Explanation:

The shapes that have the green in it have inherited the sickness or whatever. You can see that the person that they are realted to have a 50% chance of getting it. Then when they passed it on it no longer effected them. It just depends on what genes you get.

A student wants to develop a model of a plant cell and a model of an animal cell. Plant and animal cells are both eukaryotic and share many common characteristics. Which list BEST describes the characteristics that should be included in both of the models?

Answers

A

a nucleus, cytoplasm, ribosomes, and chloroplasts that absorb light energy

B

a nucleus, cytoplasm, lysosomes, and a cell wall that strengthens the cell

C

a nucleus, cytoplasm, organelles, and a cell membrane that controls the movement of substances into and out of the cell

D

a nucleus, cytoplasm, mitochondria, and a permanent vacuole that can hold large amounts of cell fluid

answer:

The answer is option c.

a nucleus, cytoplasm, organelles, and a cell membrane that controls the movement of substances into and out of the cell

Explanation:

In structure both the plant cells and animal cells are similar because they are both eukaryotic cells.

These are some of the characteristics that both of these cells share in common

They both have

1. Nucleus

2. Mitochondria

3. Endoplasmic reticulum

4. Cytoplasm

5. Lysosomes

6. Cell membrane

7. Golgi apparatus

8. Peroxisomes

Therefore option c is the answer since it contains all of these characteristics that I have listed above.

Thank you!

1. What are too small to be seen but make up everything?

Answers

Answer:

Matter is made up of small particles that are too small to be seen, even with a powerful microscope.

Answer:

atoms and molecules

Explanation:

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How does the ocean conveyor belt help keep Western Europe's climate
warmer than it would be without the current?
A. The current creates a warm wind that blows over Europe,
B. The current transports heat from the tropics to northern areas
c. The current carries heat from the North Pole to the equator
D. The current absorbs cold near both the poles.

Answers

Answer:

it’s, the current transports heat from the tropics to northern areas.

Explanation:

Where does an organism get the required reactants for cellular
respiration?

Answers

Where? The mitochondria

A pair of fruit flies reproduces and has 1000 offspring. All 1000 offspring have the alleles Gg. What is the most likely combination of alleles that each parent has, and why are other combinations not likely.

Answers

Answer:

The correct answer would be - GG and gg.

Explanation:

As it is given that all the 1000 offspring having the same allele Gg which is only possible in one condition that is cross between GG and gg because it is a heterozygous condition in the offspring. So there must be both allele present and it can not be heterozygous parents as there would be a different combinations of offspring in that case.

If the parents either GG only all the offspring would be GG the same with gg than all the offspring will be gg, thus the correct answer would be GG and gg.

animals obtain glucose from ?

Answers

Answer:

[tex]\boxed {\boxed {\sf Eat \ other \ plants \ and \ animals}}[/tex]

Explanation:

Plants, algae, and certain bacteria can photosynthesize and make their own food by converting carbon dioxide, water, and sunlight to glucose and oxygen.

Animals cannot undergo this process and produce their own food, so they have to eat food to obtain glucose.

Animals get glucose and energy by consuming plants or other animals.

Animals obtain glucose from the food they consume.

How do animals obtain glucose?

When animals eat carbohydrates, such as sugars and starches, their digestive system breaks them down into simpler molecules, including glucose.

Glucose is then absorbed into the bloodstream and transported to cells throughout the body, where it is used as a source of energy for various metabolic processes.

In addition to carbohydrates, animals can also obtain glucose from other nutrients like proteins and fats through processes like gluconeogenesis, where these molecules are converted into glucose when needed by the body.

More on carbohydrates can be found here: https://brainly.com/question/33874241

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PLEASE HELP 1 QUESTION

Answers

Answer:

Its the third one I believe

Explanation:

Which is an autotroph? * 3 points a. daisy b. earthworm c. mushroom d. Wolf

Answers

Answer:

A. the daisy is an autotroph

Explanation:

autotrophs get their food from the sun

Answer:

A  daisy

Explanation:

Which of the following best describes how the cells formed during mitosis compare to the cells formed during meiosis? (1 point)
A)Mitosis produces four genetically identical cells, while meiosis produces two genetically different cells.
B)Mitosis produces two genetically different cells, while meiosis produces four genetically identical cells.
C)Mitosis produces two genetically identical cells, while meiosis produces four genetically different cells.
D)Mitosis produces four genetically different cells, while meiosis produces two genetically identical cells.

Answers

C

Because yes meiosis produces four genetically different cells (this cells are gametes or sex cells)

How do I do this pls smart people emt

Answers

Answer:_____________________________________

Adductor muscle: Any muscle that pulls a body part toward the midline.

Abductor muscle: Any muscle that pulls a body part away the midline

_____________________________________

Left arm: Adduction

Right arm: Abduction

Left leg: Abduction

Right leg: Abduction

_____________________________________PLANES

Coronal Plane: Cutting the body as a Frontal plane transects the frontal sternum in two halves

Transverse Plane: Cutting the body from the mid in the two equal halves from the horizontal axis

Midian Plane: It is the midline body.

_____________________________________IF YOU ANYHOW STILL HAVE ANY CONFUSION I HAVE ATTACHED ALL THE PLANES BELOW__________________________________________________

Black hair is dominant over white hair in rabbits. If a heterozygous, black-
haired male is crossed with a white-haired female, what is the probability
that their offspring will have white hair? *
100%
75%
50%
0%

Answers

Answer:

50%

Explanation:

What is the flow of energy through a food chain?​

Answers

Answer:

producer to consumers , its called heterotrophs.

Explanation:

An____is a collection of all of the abiotic factors and biotic factors in an entire region.

Answers

Ecosystem is what I’m 99% sure the answer is

Answer:

I agree, ecosystem

Explanation:

Which inheritance pattern results when parents with pure traits are crossed and the resulting offspring have traits that appear to be a blend of the parents' traits?
incomplete dominance
codominance
Mendelian inheritance
polygenic inheritance

Answers

Answer:

incomplete dominance

Explanation:

pure traits are crossed and the resulting offspring have traits that appear to be a blend of the parents traits

The inheritance pattern that results when parents with pure traits are crossed and the resulting offspring have traits that appear to be a blend of the parents' traits is incomplete dominance.

What is incomplete dominance?

Incomplete dominance is the situation where the phenotype of the heterozygous phenotype is distinct from and often intermediate to the phenotypes of the homozygous phenotypes.

This means that in when a allele is incompletely dominant over another allele, an intermediary phenotype is produced.

This phenotype is a blend of both parental phenotypes. Therefore, the parents trait are said to be incompletely dominant.

Learn more about incomplete dominance at: https://brainly.com/question/14053639

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What happens as a direct result of of a species' extinction?
A. Loss of Biodiversity
B. Habitat Loss
C. Climate Change
D. Ecosystem Balance

Answers

He is right, it’s A. loss of Biodiversity.

Which characteristic is always true for all members of the plant kingdom

Answers

Answer is : Aexplanation also all plants are autotroph (Mark me as brainleist)

Answer:

It is autotrophic

Explanation:

Fungi, many birds, and a wide variety of insects all share the habitat of a tree in the forest. Part of the Choose... of the fungi is to obtain energy from dead organic matter, such as dead wood. Temperatures above 0°C and sufficient water in the environment help define the range of tolerance for fungi.

Answers

Answer:

1. Habitat, 2. Niche, and 3. Tolerance

Explanation:

The tree is a habitat for many organisms such as birds, fungi, and insects in the forest ecosystem as it provides shelter and food. Habitat can be understood as the address of an organism,

Fungi are saprophytic energy that obtains energy from the dead organic matter that presents on the tree, which is the niche of the fungi. Niche is like the job or work of an individual organism.

Fungi can grow in extreme temperature and waterlogging conditions which shows the tolerance of the fungi.

Answer:

Habitat, Niches, Tolerance

Explanation:

Got it off Histrionicus, I just took the test and they were right. :))

HELP I really need an answer for this!! Does anyone know?

Enzyme X catalyzes the conversion of substrate A into product B. If you wanted to use enzyme X to catalyze a different reaction, the new substrate would have the best chance of working with enzyme X if it has the same

A. charge as substrate A

B atomic composition but different structure as substrate A.

C. molecular weight as substrate A.

Dthree-dimensional shape and charge distribution as A.​

Answers

Answer:

A

Explanation:

If an animal is sold at terminal auction The exhibitor may purchase the animal back to show at a later life show? True or false

Answers

Answer:

false

Explanation:

1. Describe cell differentiation and include any environmental factors that play a role in gene regulation. 2. Explain the types of cells produced by meiosis. Include in your explanation the number of daughter cells produced, the number of chromosomes in each and whether they are diploid or haploid.

Answers

Answer:

1. Cell differentiation is the process whereby simple generalized cell develop into cell with specialization in function and structures. Some environmental factors that affect gene regulation include diet and nutrition, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens.

2. Gametes or sex cells are produced in meiosis and they have haploid number of chromosomes. In humans, the haploid number of chromosomes is 23 chromosomes.

Explanation:

Cell differentiation is the process whereby simple generalized cell develop into cell with specialization in function and structures. During the initiation of cell differentiation, transcription factors activate only  the genes to be expressed. Some environmental factors that affect gene regulation include diet and nutrition, temperature, oxygen levels, humidity, and the presence of mutagens(factors that cause mutation).

Differentiation occurs in zygotes numerous times resulting in the formation of a fully developed organism. Also in unspecialized cells known as stem cells, differentiation occurs leading to the formation of various cells of the organs and tissues of the body.

2. Meiosis is a type of cell division in which gametes or sex cells are produced. A single cell divides twice producing daughter cells with half the number of chromosomes present in the parent cell. In humans, the chromosome number is 46. After, meiosis, the haploid number of chromosomes produced is 23.

The graph below shows the speed of a ball rolling over uneven ground.
Forces, Motion, & Speed (6.8B,C&D):Question 7
According to the graph, at which time interval was the ball moving the
FASTEST?
Speed of Ball and Distance Traveled
10
8
Select one: -
Distance (meters)
between seconds 3 and 4
between seconds 0 and 1
Time (seconds)
between seconds 4 and 5
O
between seconds 1 and 2

Answers

Answer:

It is Distance (meters)

between seconds 3 and 4

Explanation:

I had this on my test last week

What happened to the matter in a log as it burned?

Answers

Answer:

chemical change

Explanation:

the log is a new substance now

Answer:

It shows that when wood burns, it combines with oxygen and changes not only to ashes but also to carbon dioxide and water vapor. The gases float off into the air, leaving behind just the ashes. Suppose you had measured the mass of the wood before it burned and the mass of the ashes after it burn. Have a nice day:)

The belief that living organisms can come from non-living organisms is

PLEASE HELP ASAP

Answers

Answer:

Spontaneous generation, the hypothetical process by which living organisms develop from nonliving matter; also, the archaic theory that utilized this process to explain the origin of life.

Black fur(B) in quinea pigs is dominant over white fur(b). Find the probability of a white offspring in a cross between two heterozygous guinea pigs. (Hint: draw a punnett square)
A.75%
B.0%
C.50%
D.25%
E.100%​

Answers

Both the Parents have the genotype (Bb) then the offsprings in the F1 generation will have BB, Bb, and bb genotypes and black fur and white fur as phenotypes. Thus, the correct option is D.

What is Punnett Square?

The Punnett square is a square diagram used to predict the genotypes of a particular cross or breeding experiment. The diagram is named after Reginald C. Punnett, scientist who devised the approach in 1905. The diagram is used by biologists to determine the probability of an offspring having a particular genotype.

In the given question, the genotype of both the parents is Bb (heterozygous) where, B is the dominant character (black fur) and b is the recessive character (white fur). The genotype and phenotype of the offsprings can be determined by this diagram.

The punnett square is attached with the answer.

25% of the offsprings will have Black fur and homozygous condition (BB)

50% of the offsprings will have Black fur and heterozygous condition (Bb)

25% of the offsprings will have white fur and homozygous condition (bb)

Therefore, the correct option is D.

Learn more about Punnett Square here:

https://brainly.com/question/25608427

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what are the advantages of slower population growth? This is about animal population btw

Answers

Answer:

Slower population growth means that women on average are having fewer children, which gives girls and women the opportunity to pursue education and careers and continue a positive cycle of schooling, autonomy and equal status. Slower population growth will also place a higher value on immigration.

Hope that helps!

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