What effect does studying with music have on student test scores hypothesis?
Answer:
It helps them to focus
Explanation:
some people focus better when listening to music
Answer:
For some students it can help and for some it cant
Explanation:
Suppose we stock a pond with 100 fish and note that the population doubles in the first year (with no harvesting), but after a number of years, the population stabilizes at what we think must be the carrying capacity of the pond: 2,000 fish. Growth seems to have followed a logistic curve. a. What population size should be maintained to achieve maximum yield, and what would be the maximum sustainable fish yield? b. If the population is maintained at 1,500 fish, what would be the sustainable yield?
Answer:
Explanation:
From the given information,
The first process is to determine the initial growth rate by using the formula:
[tex]R_o = \dfrac{In(2)}{t_d}[/tex]
where;
The initial growth rate(constant) = [tex]R_o[/tex] ; &
the doubling time = [tex]t_d[/tex] = 1 year
[tex]R_o = \dfrac{In(2)}{1 \ year}[/tex]
[tex]R_o[/tex] = 0.693 / year
Now, we move up to the net stage to find the growth constant by using the formula:
[tex]r = \dfrac{R_o}{(1 - \dfrac{N_o}{K})}[/tex]
where;
[tex]N_o[/tex] = population of fish in the pond = 100
[tex]R_o[/tex] = The initial growth rate(constant) = 0.693 /year
K = carrying capacity = 2000
Then;
[tex]r = \dfrac{0.693 \ /year }{(1 - \dfrac{100}{2000})}[/tex]
[tex]r = \dfrac{0.693 \ /year }{(1 - 0.05)}[/tex]
[tex]r = \dfrac{0.693 \ /year }{(0.95)}[/tex]
r = 0.730 / year
a)
Now, the maximum yield can be evaluated by using the expression:
[tex]= \dfrac{rk}{4}[/tex]
[tex]= \dfrac{0.730 \times 2000}{4}[/tex]
= 365 fish per year
Also, the maximum sustainable yield is said to be half of the carrying capacity suppose that the population growth obeys logistic curve;
i.e.
[tex]N' = \dfrac{1}{2} \times 2000[/tex]
N' = 1000 fish
b)
If the population is maintained at 1500 fish;
The sustainable yield can be calculated by using the formula:
The Sustainable yield = [tex]r\times N (1 - \dfrac{N}{K})[/tex]
The Sustainable yield = [tex](0.730/ year ) (1500) (1 - \dfrac{1500}{2000})[/tex]
The Sustainable yield = 1095 × 0.25
The Sustainable yield = 273.75 fish per year
The Sustainable yield ≅ 274 fish per year
Population size should be maintained to achieve maximum yield and Sustainable yield if population is maintained at 1,500 fish are 364.7 , 273.525 fish per year
Sustainable yield:Given that;
Stock in start = 100 fish
Double in 1 year
Capacity of pond = 2000 fish
Find:
Population size should be maintained to achieve maximum yield
Sustainable yield if population is maintained at 1,500 fish
Computation:
Growth rate = ln₂ / 1
Growth rate = 0.693 per year
With no growth constraint r = [tex]\frac{0.693}{1-\frac{100}{2000} }[/tex]
With no growth constraint r = 0.7294 per year
A. Population size should be maintained to achieve maximum yield = [tex]\frac{0.7294 \times 2000}{4}[/tex]
Population size should be maintained to achieve maximum yield = 364.7 fish per year
B. Sustainable yield if population is maintained at 1,500 fish = [tex][(0.7294))(1500)][1-\frac{1500}{2000} ][/tex]
Sustainable yield if population is maintained at 1,500 fish = 273.525 fish per year
Find out more information about 'Sustainable yield'
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The term semiconservative replication refers to the fact that each new DNA molecule resulting from the replication process is "half-old, half-new." In the diagram, complete the replication required in the
middle of the molecule by adding the required letters representing the missing nucleotide bases. Recall
that ATP energy and the appropriate enzymes are actually required to complete this process.
Answer:
1. A
2. C
3. T
4. G
5. G
6. G
7. T
8. G
9. A
10. C
11. C
12. C
Explanation:
As stated in this question, Semi-conservative model of DNA replication is the acceptable model of replication in which the two synthesized molecules of DNA consists of one new and one old strand each. DNA replication is carried out by an enzyme called DNA polymerase.
In the semi-conservative model, a double stranded DNA separates into two single strands. Each single strand is used as a template for DNA polymerase to synthesize nucleotides based on complementary base pairing i.e. For every Adenine base, Thymine is added and for every Guanine, Cytosine is added and vice versa.
In this question showing an image of a DNA molecule undergoing replication using semiconservative model, the first DNA molecule consists of the following nucleotides on the old strand and its synthesized nucleotides on the new strand:
Old strand - New strand
1. T - A
2. G - C
3. A - T
4. C - G
5. C - G
6. C - G
On the second DNA molecule, we have the following nucleotides on the old strand and its synthesized nucleotides on the new strand.
Old strand - New strand
7. A - T
8. C - G
9. T - A
10. G - C
11. G - C
12. G - C
HELP ME ASAP!!!!
Select the correct answer.
Gina is scuba diving when she notices a large fish glide over her. It has a flattened body and she notices gills on its underside. Which taxonomic
group does the fish belong to?
A.
Selachii
B.
Batoidea
C.
Sarcopterygii
D.
Actinopterygii
Answer:
Your answer is B) Batoidea. Batoidea is a superorder of cartilaginous fishes commonly known as rays.
Answer:
b because the guy above me said so
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION THANK YOU!!
Answer:
A.Negative Growth
Explanation:
large balen whales, and even whale sharks feed primarily on plankton communities. How can such samll organism provide food for such large animals?
Answer:
plankton my look small but if you have a micoscope they are pretty big and no not because it is zoomed on them
Explanation:
do not question me smarts i am smart tho lot smarter then you think i am
Covalent bonds can be best described as neutral atoms coming together to share electrons. neutral atoms coming together to create electrons. ionized atoms coming together to trade electrons. ionized atoms coming together to destroy electrons.
Answer:
neutral atoms coming together to share electrons.
Explanation:
Answer:
The answer is neutral atoms coming together to share electrons.
Explanation:
Bc covalent compounds are compound whose atoms form bonds by sharing electrons
Have a great day!!
Please select the word from the list that best fits the definition
Brings dry, clear weather
Answer:
conduction?
Explanation:
Answer:
anticyclone/2nd one down
The graph shows the predicted change in land usage when the population growth rate is positive and average. What effect would average population growth have on land usage?
The effect that the average population growth would have on land usage, considering the given graph is that: Option D.
What is Urban Land Use?Urban land use can be described as the level of activities reflected by a location which involves the following:
RetailingManufacturingResidenceInstitutional and public buildingsTransportation, among others.Urban land use increases, normally, as population increases. From the graph shown, the purple line shows urban land use increased above 30%.
Therefore, the effect that the average population growth would have on land usage, considering the given graph is that: Option D.
Learn more about urban land usage on:
https://brainly.com/question/818787
Answer:
Urban use of land rises to more than 30 percent of available land
Explanation:
Succession Interactive!
What is the difference between primary succession and
secondary succession?
Primary succession occurs in an area that is disrupted by a
fire or other natural disaster but secondary succession does
not.
Primary succession occurs after secondary succession.
Primary succession involves only plants but secondary
succession involves animals too.
Primary succession occurs in an area with no life and no soil
but secondary succession happens in an area where an
existing community was disrupted.
Answer:
Primary succession occurs in an area with no life and no soil but secondary succession happens in an area where an existing community was disrupted.
Explanation:
Ecological succession, which is the series of changes that occurs in an ecosystem over a period of time, can be divided into two types namely: primary succession and secondary succession.
- Primary succession is a kind of succession in which a bare surface or rock is colonized by certain organisms called PIONEERS. Primary succession occurs in an area with no life and no previous soil.
- On the contrary, secondary succession occurs in an area that has been previously colonized but disturbed as a result of natural occurrences e.g earthquake, wildfire, flooding etc.
What is the role of lay person like you in the mission of the church today?
Explanation:
base on the person opinion
Rough ER is mostly responsible for
making -__-, whereas smooth ER is
mostly responsible for making
Explanation:
The rough ER, studded with millions of membrane bound ribosomes, is involved with the production, folding, quality control and despatch of some proteins. Smooth ER is largely associated with lipid (fat) manufacture and metabolism and steroid production hormone production.
The Ebola virus can often have symptoms similar to bacterial pneumonia, an infection of the lungs. These symptoms include chest pains, shortness of breath, and fever. Which statement best summarizes the differences between these two diseases? (SC.6.L.14.6)a.Viruses can replicate because they are living organisms, while bacteria cannot. b.Viruses are not living organisms, but bacteria are living. c.Viruses can be beneficial to live organisms but bacteria are often infectious. d.Viruses are living organisms, while bacteria are not.
Answer:
Eblow is a terrible thing.
Explanation:
Answer:
I think its, option b) Viruses are not living organisms, but bacteria are living.
Explanation:
The other options don't fit "summarize the differences b/w bacteria and virus", or simply don't make sense...
Bacteria can replicate as well, not only virus, so that cannot be a difference
The virus is often the one being more dangerous, there is something called "good bacteria"
A virus isn't living, (for the sake of this answer), and we all know for sure that bacteria is living
So, that's how option b is correct
I hope this helped you!!
Which helps in the production of eggs?
testosterone
estrogen
semen
fallopian tube
Answer:
Semen helps in the production of eggs!
answer:
... semen...
explanation:
i'd be embarrassed to explain that bit
I’m stuck with this Encryption Table, if anyone can please help me solve this I would appreciate it very much.
Answer:
hu7gf6dcxyxycjc c.f. c ycyftc Tx tv hcv12345678910112131415161727 8gh
Please someone help me with my Biology questions. PLEASE
Answer:
I cant see the question
Explanation:
Which term refers to the fact that naturally occurs omg he universe
Answer:
Scientific law.
Explanation:
A scientific law is a statement that the scientific community elaborates on after observing a natural phenomenon and performing several experiments concerning certain phenomena. Scientific laws aim to explain the reasons why something happens and what may cause it to predict it in the future.
Put these steps of solar system formation in order
Answer:
Explanation: I tried to use the answer that was on there and it was wrong so I got that answer wrong luckily it tells the the correct answer
Answer: Answer is explained below.
Explanation:
Solar system formation put in order:
A solar nebula forms. Gravity pulls the solar nebula upon itself.The solar nebula spinsfaster and faster.The solar nebula flattens into a disk. Gas becomes hot and dense and forms a star.Hope this helps someone. Good luck everyone!
*Karma will go after the next person who deletes my answer. How dare you!
how do unicellular and multicellular organisms differ?
Answer:
Unicellular organisms- Organisms which have only single cell are called unicellular organisms.
Multicellualr organisms- Organisms with many cells are called multicellular organisms.
Answer:
multicellular organisms need organs to function properly
Explanation:
Which valve allows for the blood to be pumped into the aorta?
Answer:
Aortic Valve
Explanation:
I just know it
Porcupines have long sharp hairs called quills. What is the main function of the quills on the porcupine?
Answer:protection from other predators.
Explanation: the quills will stick into a predator that attack the porcupine Note: it does NOT shoot its quills
Answer: protection from other predators.
Is thigmotropism is caused by water?
Answer: No. Hydrotropism is caused by water
Explanation:
Which is the best description of photophosphorylation?
If you were beamed into the Earth's outer core and you wanted to move to somewhere cooler you would:
Purple petal color in pea plants is dominant to white petal color. Two heterozygous pea plants are crossed.
Answer:
what do you need to know?
Explanation:
Answer:
use a punnett square if you need help u can ask me
Which of the following is not a viral disease : (needed ASAP)
1. AIDS
2. Typhoid
3. Mumps
4. Polio
Answer:
It is typhoid. typhoid is not a viral disease
Answer:
Typhoid is not a viral disease.
Explanation:
Viral diseases are spread through virus particles, while typhoid is spread from typhi bacteria.
Which is a component of cell theory?
a.All living things grow into cells.
b.All living things are made of cells.
c.Cells come from nonliving matter.
d.Cells come from non-cells.
Answer:
B.
Explanation:
That's true without cells we wouldn't live.
The Hawaii Islands were formed as a result of
A. lava flowing over Earth's surface where two tectonic plates move apart
B. an oceanic plate moving over a mantle hot spot
C. two oceanic plates colliding to form an island arc
D. tectonic plates sliding past each other
Answer:
a is your answer
Explanation:
Is your prediction supported by the membrane potential chart? Explain your answer.
Answer:
Yes, it is. The chart shows that the initial charge of the neuron is negative. When the neuron is stimulated, sodium ions enter the cell. So, the voltage inside the cell changes to positive. When potassium ions move outward, the voltage decreases until it reaches its previous state.
Explanation:
Plato answer
The fruits have several purposes. Which purposes might be similar to those of a cone?
Answer:
Flowers and cones have different structures. Cones when mature have a woody texture and is made up of scales while flowers have colorful petals, sepals and both male and female reproductive portions are called stamens and pistils.
Explanation:
Answer:
the other side of a cone
Explanation: