Reflection Questions
1. Explain how biological evolution is supported by the fossil record.
2. Why is natural selection a mechanism for biological change?
3. How does chemical evolution explain the origin of life on Earth?
4. Explain why scientific theories, such as biological and chemical evolution, represent the
strongest explanation of the changes observed in the fossil record.
5. How can scientific theories on evolution and the fossil record change over time?

Answers

Answer 1

Answer:

1) The word ‘evolution’ was first mentioned in the book ‘The Origin of Species’ in 1859, by Charles Darwin. Darwin put forward the concept of evolution during his journey to the Galapagos Islands. 

2)Natural selection is an important mechanism of evolution. It states that the organisms that are able to survive and reproduce with the changing environmental conditions are selected by nature while the ones that cannot survive are eliminated.

3) Evolution mainly deals with the origin of life on earth. The conditions and the forms of life on earth were entirely different from what we see today.

please forgive me I cant answer 4th one..

5)Charles Darwin, an English naturalist of the 19th century made an extensive study of nature for over 20 years. 

Answer 2

1. The fossil record provides crucial evidence for biological evolution. Fossils are the preserved remains or traces of past organisms, providing a record of life on Earth over millions of years.

By studying fossils, scientists can observe changes in organisms and their characteristics over time. Fossils show a progression of simpler life forms in older layers to more complex ones in more recent layers.

2. Natural selection is a mechanism for biological change because it leads to the adaptation of populations to their environments over time. It is based on the concept that individuals within a population exhibit variation in traits, and those traits that enhance survival and reproduction are more likely to be passed on to future generations.

Through natural selection, individuals with advantageous traits have higher chances of surviving and reproducing, leading to the increased frequency of those traits in subsequent generations.

3. Chemical evolution, also known as abiogenesis or prebiotic evolution, explains the origin of life on Earth by proposing that life arose from non-living matter through a series of chemical reactions.

According to this theory, in Earth's early conditions, simple organic molecules formed from inorganic compounds through processes like lightning, volcanic activity, and reactions in the atmosphere and oceans.

These molecules then underwent further reactions, leading to the formation of more complex molecules like amino acids and nucleotides, which are the building blocks of proteins and nucleic acids, respectively.

4. Scientific theories such as biological and chemical evolution represent the strongest explanations for the changes observed in the fossil record because they are supported by extensive evidence from multiple scientific disciplines.

These theories have withstood rigorous testing, scrutiny, and peer review over many years. They are based on a large body of evidence, including the fossil record, comparative anatomy, genetics, molecular biology, and observations of natural populations.

5. Scientific theories on evolution and the fossil record can change over time as new evidence is discovered, technologies advance, and scientific understanding improves.

The process of scientific inquiry involves continuous investigation, testing, and refinement of theories based on new data and observations.

As scientists gather more evidence from fossil discoveries, genetic studies, experimental research, and other fields, our understanding of evolution and the fossil record can deepen and evolve.

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Related Questions

]How does emphasis on agricultural technology today compare to the recent past?


Today scientists are only concerned with the nutrition of livestock, not with size or quantity.

In the past, scientists were concerned with mass-producing for local areas, not for large areas.

In the past, scientists have not been concerned with the well-being of livestock or crops.

Today scientists are devising ways to use advancements in positive ways for the environment.

Answers

Answer:

In the past, scientists were concerned with mass-producing for local areas, not for large areas.

Explanation:

Today agriculture is made on a more global scale

A protein may fold incorrectly if_________ brings the wrong amino acid to the ribosome to assemble the protein.

Answers

YOUR ANSWER IS tRNA because the mRNA sends out a message to the tRNA and the tRNA brings back the appropriate amino acid but if the tRNA where to bring back the wrong the protein could fold incorrectly.

If tRNA does not bring back the appropriate amino acids, the protein may fold incorrectly. so, the blank is tRNA.

What is tRNA?

The type of RNA that helps in the synthesis of proteins from mRNA, called as tRNA. tRNA acts as an adapter molecule during the translation process, and as an adapter, it connects amino acids to nucleic acids. It carries the amino acids that are added to the peptide chain and decodes the same codons in the mRNA molecule.  

The structure of tRNA can be separated into primary, secondary and tertiary structures. The structure tRNA has four arms (the acceptor, D, anti-codon and -arms), three loops (D, anti-codon and -loop) and a variable region.

It binds amino acids to specific codons present in the mRNA, by acting as an adapter. Therefore, If tRNA bring wrong amino acid to ribosome for assembly of protein, protein may fold incorrectly.

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Please help asap I'll give brainliest as well
Imagine you are a scientist who monitors some of North Carolina's trout streams. You find that one of the streams has a temperature of about 13°C during most of the day. However, everyday around 2 p.m., the stream briefly reaches temperature levels of 19°C. What should you do in order to preserver the water quality of this stream?

Answers

Answer:

With thousands of miles of trout water, North Carolina is a trout ... While some are private water, most of the stream mileage is ... If you want to start an argument among the trout-fishing ... backcountry camping, as opposed to one-day trips, is the way to go.

Explanation:

Space hurricanes are caused by____________.

Question 2 options:

streams of plasma unleashed from the sun in what's known as the solar wind.


the warm waters of the ocean fuel space hurricanes.


electrons and protons combining together to form a massive tornado like feature in the sky.


the planet Pluto, who is still mad about being kicked out of our solar system.

Answers

It’s definitely the last one :) (just joking)
It’s the first one because it had more explanation and it’s pretty obvious :)

Space hurricanes are caused by streams of plasma unleashed from the sun in what's known as the solar wind.

What is Space hurricane?

This is a phenomenon in which charged electrons and plasma make up a storm instead of rain and wind.

The plasma is usually unleashed from the Sun which is why option A was chosen as the most appropriate choice.

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In order to perform an experiment, a chemist needs an element that has similar properties of sodium (Na) but has a lower atomic mass. Which element should the chemist select for the experiment?

Answers

Bbbbbbbb btw don’t click on a link it’s hackers

PLS HELP
Flocabulary

Answers

Answer:

im pretty sure its B

Explanation:

In general, how are seasons in the northern hemisphere related to seasons in the southern hemisphere?

Answers

Answer:

the seasons in the northern hemisphere are the opposite of those in the southern hemisphere

The season are opposite so when it is summer In north it’s winter in south

Which of the following cellular processes will be involved in the growth, development, and reproduction of the offspring?
a. meiosis only
b. mitosis only
C. both meiosis and mitosis
d. neither meiosis nor mitosis

Answers

A - meiosis only
Explanation

Answer:Both Mitosis and meiosis

Explanation:

Cell face both conditions for the development of new offspring

Which statement is the best description of organism behavior?

A: the way an organism responds to human instruction

B: the way the environment responds to organisms

C: the physical traits an animal has that are passed down

D: the way an organism responds to the elements in its environment

Answers

The statement 'the way an organism responds to the elements in its environment' is the best description of organism behavior (Option D).

What is the environmental response?

The term environmental response indicates as an organism can react to certain environmental conditions.

These responses are fundamental to the survival and reproduction of the organism.

The organism responds to environmental conditions such as temperature changes, winds, etc.

In conclusion, the statement 'the way an organism responds to the elements in its environment' is the best description of organism behavior (Option D).

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Imagine you are a scientist who monitors some of North Carolina's trout streams. You find that one of the streams has a temperature of about 13°C during most of the day. However, everyday around 2 p.m., the stream briefly reaches temperature levels of 19°C. What should you do in order to preserver the water quality of this stream?

Answers

Answer:

15

Explanation:

All the statements are correct with respect the two atoms placement on the Periodic Table EXCEPT –

Answers

C because both shells of the atom are filled therefore it is stable and isn't reactive. It's not A because there is only one electron in the outer shell therefore it is reactive but not highly reactive. So C is the answer.

Hope this helps! Brainliest is always appreciated!

ASAP PLEASE HURRY
Igneous, sedimentary, and metamorphic are found at the same cliff side.

Which statement is correct about the rocks in this location?


A) All three types of rock will become metamorphic if they stay at the surface of Earth.

B) If this location is buried deep underground, only the metamorphic rock will melt because it has already been heated before.

C) The metamorphic rock and sedimentary rock were already at this location and magma flowed into the other rocks.

D) The igneous rock will become metamorphic rock after the rock in the cliff side turns into sediment.

Answers

Answer:

The metamorphic rock and sedimentary rock were already at this location and magma flowed into other rocks

what is the connection between chromosomes and the heavily muscled phenotype??
Uses these vocab terms or phases in the short answer response: allele, chromosomes , heavily muscled, myostatin protein

Answers

Answer: The genotype of an organism is defined as the sum of all its genes. The phenotype of an organism is the observable physical or biochemical characteristics of an organism, determined by both genetic make-up and environmental influences.

Explanation:

what is the howler monkeys biome

Answers

Predominantly inhabit rain forest ecosystems

STAAR 11B
Fish in a lake have to compete for space. Different fish have different optimal temperature
ranges. The graph below shows the temperature ranges of four fish species.
Optimal Temperature Ranges
of Four Fish Species
Lake trout
Largemouth bass
Type of fish
Sunfish
Bullhead
0
5
30
10 15 20 25
Temperature (°C)
At which temperature range will there be the most competition for space among these fish species?
F 5°C to 10°C
G 10°C to 15°C
H 15°C to 20°C
J 25°C to 30°C

ANSWER:
EXPLANATION:

Answers

Answer: J

Explanation:

Klaus is going to Greece to study the ancient columns. He typically studies artifacts in a lab, but the columns are immobile and can't be taken to
a lab. What kind of artifacts are the columns considered to be?

A .archaeological features

B.stationary artifacts

с.cumulative lifeways

D.stationary remains

Answers

i would say d, they can’t move and they are remains from the past
I think the answer is stationary remains

What is the difference between Hinduism and Nirvana

Answers

Answer:

The most ancient texts of Hinduism such as the Vedas and early Upanishads don't mention the soteriological term Nirvana. This term is found in texts such as the Bhagavad Gita and the Nirvana Upanishad, likely composed in the post-Buddha era. The concept of Nirvana is described differently in Buddhist and Hindu literature. Hinduism has the concept of Atman – the soul, self asserted to exist in every living being, while Buddhism asserts through its anatman doctrine that there is no Atman in any being. Nirvana in Buddhism is "stilling mind, cessation of desires, and action" unto emptiness, states Jeaneane Fowler, while nirvana in post-Buddhist Hindu texts is also "stilling mind but not inaction" and "not emptiness", rather it is the knowledge of true Self (Atman) and the acceptance of its universality and unity with metaphysical Brahman.

Explanation:

Answer:

The concept of Nirvana is described differently in Buddhist and Hindu literature. Hinduism has the concept of Atman – the soul, self – asserted to exist in every living being, while Buddhism asserts through its anatman doctrine that there is no Atman in any being.

Explanation:

Genetic recombination would be most closely associated with which process in disease-causing microorganisms?

A.binary fission in fungi
B.sexual reproduction in fungi
C.spore formation in bacteria
D.viral replication in host cells

Answers

i think the answer is B because genetic diversity in sexually reproducing organisms can allow an organism to function in new ways

Genetic recombination is most closely associated with: Choice D: Viral replication in host cells

Definition:

Genetic recombination (otherwise termed genetic reshuffling) is simply the exchange of genetic material between different organisms which leads to production of offspring with combinations of traits that differ from those found in either parent.

In retroviruses, recombination actually occurs at the point during replication when the retrovirus genome is in a DNA form and takes place by the same break-rejoin technique as in cells and DNA viruses.

Recombination can occur both between two related retroviruses and between the retrovirus DNA and the host DNA.

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Pretend your classmate has told you that they are having trouble with what succession is. How would you explain to them what succession is? How would you explain the difference between primary and secondary succession? Write your response in the textbox and submit when you are done. DO NOT GO.O/.GLE YOUR ANSWER

Answers

Answer:

Ecological succession is the process of change in the species structure of an ecological community over time. The time scale can be decades (for example, after a wildfire) or more or less.

Explanation:

Ecological succession is basically how the structure of an ecological community changes.

Pretend your classmate has told you that they are having trouble with what succession is. How would you explain to them what succession is? How would you explain the difference between primary and secondary succession? Write your response in the textbox and submit when you are done. DO NOT GO..OGLE YOUR ANSWER

Answers

Answer: In primary succession, newly uncover or newly found rock is populated by living things for the first time. In secondary succession, an district before it was populated by living things is disturbed, and then re-populated after the disturbance.

Explanation:

Dont give me a link please answer the question. I'm tired and i want to get this done so like keep the answer short and simple, please

If Pluto had not been demoted to a dwarf planet, what category of planet would it fall under? Explain your answer.

Answers

Answer:

The planet pluto originally was considered as a real planet until its demotion as a dwarf planet.

The reason it was demoted was because it was soon realized to not meet the three criteria of the International Astronomical Union used to define a full size planet.

So if pluto was not categorized as a dwarf planet than it would of just fallen under as a planet.

Explanation:

Not mine answer but it from purple6kabi

Answer:

The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet.

Explanation:

Which behavior is a response to an external stimulus? EXPLAIN WHY

A. An elephant drinks water to quench its thirst.

B. A dog vomits during an illness to rid itself of pathogens.

C. A child gets a fever to fight off the flu.

D. A turtle suns itself on a rock during a cool day.

Answers

Answer:

the answer is d

Explanation:

trust me I got it right

gene that is typically observed

Answers

Answer:

it think it is the marker gene it said that online for me I dont know

if that even is a gene

Answer:

yes

Explanation:

Please Help Me With Science
The Sun’s radius is about 100 times the radius of the Milky Way.
TRUE OR FALSE?

Answers

Answer:

TRUE.

Explanation:

(link to the quizlet study flashcards just incase you need them)

It’s true. It is about 100 times the radius of the Milky Way

if you were to view a bacteria cell, a protist cell and a fungi cell under the microscope, which one(s) would contain a nucleus?

-the bacteria only

-the fungi only

-both the fungi & protist

Answers

i think fungi and bacterial cell both have nucleus which can be seen under microscope

can octopuses regenerate teeth?

Answers

No they cannot. Lol lol lol
i believe the answer for this is no

Light ray 1 strikes the smooth surface of a mirror as shown below.

**IMAGE BELOW**

Which of the following is the reflected ray for ray 1?

A) Ray 2

B) Ray 3

C) Ray 4

D) Ray 5

Answers

Answer:

The answer is D. Ray 5

Explanation:

Its because you have to angle the mirror so that it will reflect

Answer:

naw man its ray 2

Explanation:

pls help me, ill mark!!!!

Answers

Answer:

#1. the organs of the nervous system:  This system is made up of the brain, spinal cord

#2. the organ that sensory nerves reach the brain:  Sensory neurons assemble to form sensory nerves that reach the brain through the spinal cord. The brain processes the sensory impulses and sends information to the corresponding effector organs through motor nerves

The small finger like projections are:  axon terminals, The connection between a neuron and a muscle cell is called a neuromuscular junction. The finger-like projections of the axon are the axon terminals. An action potential moves down to the axon terminals where it causes a chemical message called a neurotransmitter to be released into the synaptic cleft.

Explanation:

pls mark brainliest

How do weather impact travel and tourism? (We are going to explore how weather impacts travel to Costa Rica, and how weather influences whale migration/whale watching tourism.)

Answers

Sunny weather does seem to be broadly correlated with a larger surplus on the international tourism balance, while worse weather is associated with a tourism deficit. This confirms that, as expected, overall there is a net flow of tourists from colder to warmer countries.

What is represented in each square of the periodic table?

Answers

I don’t know if you’re talking about the little circles and dots since I don’t really understand the question but those are the Lewis Dot Structure
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