Answer:
Plants extract the carbon dioxide from the air and use it in photosynthesis process to feed themselves.
How would a harsh winter most likely affect the rabbit population size?
Answer:
In harsh winter, usually there's less food, therefore, rabbits will not be able to find enough food and the population of rabbits will decrease.
Most binary ionic compounds are also called metals.
A. True
B. False
Pleaseeee someone help me . What is the half life of Caron 14 of this problem ???
Answer:
5730 years
Explanation:
In a chemical reaction, including radioactive decay, the half-life of a species is the time taken for the substance to decrease to exactly one-half its initial value.
For a first-order reaction, the half-life of the reactant is
[tex]t_{\frac{1}{2}} \ = \ \displaystyle\frac{\ln 2}{\lambda} \ \ \ \ \ \ (1)[/tex],
where λ is the reaction's rate constant modeled by the differential equation describing the kinetics of a first-order reaction
[tex]N \ = \ N_{0}e^{-\lambda t} \ \ \ \ \ (2)[/tex],
where N is the remaining amount of substance after time t and [tex]N_{0}[/tex] is the initial amount of substance before the chemical reaction proceeds.
Since the value of λ is constant, rearrange equation (1) with λ as the subject,
[tex]\lambda \ = \ \displaystyle\frac{\ln 2}{t_{\frac{1}{2}}}[/tex].
Given that only 12.5% of carbon-14 remained after 17190 years assuming that initially there was 100% of carbon -14, substitute in the values into equation (2) and solve for λ (make λ the subject of the equation),
[tex]\-\hspace{0.56cm}12.5 \ = \ 100e^{-\lambda \times 17190} \\ \\ \-\hspace{0.5cm} \displaystyle\frac{12.5}{100} \ = \ e^{-17190\lambda} \\ \\ \displaystyle\frac{\ln\displaystyle(\frac{1}{8})}{-17190} \ = \ \lambda \\ \\ \-\hspace{1.05cm} \lambda \ = \ \displaystyle\frac{3\ln2}{17910} \ \ \ \ \ \ \ \ \ \ (\ln \displaystyle\frac{1}{x} \ = \ -\ln x\ ; \ \ln x^{n} \ = \ n\ln x )[/tex]
Equate both λ,
[tex]\displaystyle\frac{\ln 2}{t_{\frac{1}{2}}} \ = \ \displaystyle\frac{3\ln2}{17190} \\ \\ \-\hspace{0.26cm} t_{\frac{1}{2}} \ = \ \ln 2 \ \times \ \displaystyle\frac{17190}{3\ln2} \\ \\ \-\hspace{0.26cm} t_{\frac{1}{2}} \ = \ \displaystyle\frac{17190}{3} \\ \\ \-\hspace{0.26cm} t_{\frac{1}{2}} \ = \ 5730[/tex]
*Note that the above calculations demonstrated that carbon-14 went through 3 half-lives to yield a remaining 12.5% of its original amount, since
[tex]100\% \ \overset{t_{\frac{1}{2}}}\longrightarrow \ 50\% \ \overset{t_{\frac{1}{2}}}\longrightarrow \ 25\% \overset{t_{\frac{1}{2}}}\longrightarrow \ 12.5\%[/tex].
Therefore, if n is the time taken for carbon-14 to half its initial amount trice to remain 12.5% of its initial amount. Then, the half-life of carbon-14 is [tex]\displaystyle\frac{n}{3}[/tex].
=
Which of the following is a way that minerals are used?
a. industry
b construction
C technology
d. all of the above
Please select the best answer from the choices provided
A
ООО
0 0 0
Answer:
D.
Explanation:
I need help with this answer it’s a bit tricky
Answer:
organic selection
Explanation:
Which of the following are characteristics of the tundra biome? (Choose all that apply.)
much rainfall throughout the year
low biodiversity
very cold temperatures
lack of trees
A lack of trees, a lack of biodiversity, and extreme circumstances are what most clearly identify the tundra.
What is Tundra Biome?The polar ice caps and the boreal woodlands (also known as taiga), it is located. Extremely low temperatures and barren, icy terrain define the tundra biome. The arctic tundra and the alpine tundra are the two different forms of tundra.
The Tundra Biome: The Ice Deserts of the World. The tundra is the coldest biome, with an average annual temperature of less than 5°C and yearly precipitation of less than 100 mm, most of it snow.
Only a few number of plants and animals can even thrive on the tundra due to its extreme weather conditions. The Finnish term "tunturia" is where the word "tundra" originates.
Therefore, a lack of trees, a lack of biodiversity, and extreme circumstances are what most clearly identify the tundra.
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what would happen to an organism if mitosis did not occur
If mitosis DID NOT happen... the organism would stay as a single cell. The life we know it now... wouldn't exist as we have multi-cellular stuff.
I don’t understand help
Answer:
A
Explanation:
not 100% sure but it seems to be the only sensible answer
Simone is creating a model to track the movement of carbon atoms in an ecosystem. Which statement best explains the role of plants in Simone's model?
Although I cannot see the model for Simone's experiment, I can offer the insight that the most likely role of plants in the model is that they consume the carbon atoms and produce oxygen.
How do plants affect the carbon in the atmosphere?Plants are known to have a great effect on the carbon levels of the atmosphere. The correlation is that the more plants are present, the less carbon is free in the air. The reason for this is that plants use carbon dioxide as a substrate to manage the process of photosynthesis.As a by-product, after consuming carbon dioxide and completing photosynthesis, plants release oxygen into the atmosphere.Therefore, we can confirm that the most likely role of plants in the model created by Simone, is that they will consume carbon atoms in the form of carbon dioxide in order to sustain photosynthesis, which releases oxygen.
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This is my teacher/daughter
thats nice :)
also hi hru
What is carbon?
A. an element
B. a compound
C. an
organism
need help with the top question :p
what is sugar converted into if your body does not metabolize it
Answer: It's starts burning body fat.
Explanation:
PLEASE HELP WITH THIS ONE QUESTION
Answer:
D
Explanation:
as only one phosphate is removed hence the name ADP which stands for adenineDIphosphate. Hope this make sense :)
What is the name of the disease caused by a lack of thyroid hormones?
Which answer lists the three types of tundra?
Arctic, alpine, and coniferous
mountain, desert, and Antarctic
Arctic, desert-like, and treeless
Arctic, Antarctic, and alpine
Answer:
Arctic, Antarctic, and Alpine
Arctic, Antarctic, and alpine
25 points
Complete the sentence. Carbon flows between ____________, environmental storage centers that absorb and store carbon for long periods of time.
plants and animals
humans and air
rocks and soil
carbon sinks
Answer:carbon cycle
Explanation:
Answer:
it would be stored in plants in animals
Explanation:
those are one of our main sources of oxygen
I don’t wanna go to school
Answer:
Sorry about that
Explanation:
Which of the following ecological levels does not describe interacting biotic and abiotic factors in an area?
A. Biome
B. Community
C. Ecosystem
D. Habitat
Answer:
habitat
Explanation:
The ecological levels do not describe interacting biotic and abiotic factors in an area's habitat. The correct option is D.
What is a habitat?
A habitat is a place where physical or biotic factors are presented. This is a place where all the factors are present to live a species with all suitable conditions.
Habitat of different species is different. They live in their suitable habitat to grow and reproduce accordingly. If a species is moved from its habitat, then it may have difficulties in surviving.
So habitat is not a place where all biotic and species abiotic factors are present, it is a place where all living factors are present that are necessary for the living of a person. So, it is not the ecological level of interacting biotic and abiotic factors in an area
Thus, the correct option is D. Habitat.
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List the angles in order from smallest to largest. Note image in not drawn to scale
Answer:
maybe cab If it's wrong I'm so sorry
Which of the following is NOT considered a form of precipitation? *
Rain
Snow
Lightning
Hail
All of the above are considered precipitation
Answer:
Lightning is not considered a form of precipitation but rather a discharge of electricity.
why do fungi release enzymes from there tips?
Answer:
They absorb the food molecules that result from the external digestion.
Explanation:
Why is it that dominant diseases are not as common as recessive ones?
Answer:
Mainly because if a disorder is dominant, then it will be manifested by all who have the gene. If the disorder is severe, then it will reduce the chances of the individual surviving to grow up and reproduce (unless the disorder only manifests symptoms in later life). If they do reproduce, then 50% of their offspring will inherit the gene, and be at a similar disadvantage in reproduction. Thus, there is likely to be selection against the gene. By contrast, a recessive disorder is only manifested if both parents pass on the abnormal gene, and an individual with one gene for the disorder is usually at no disadvantage. Thus, there is much less selection against abnormal recessive disorders.
what happens when an acid is added to a solution?
Answer:
pH is a measure of the concentration of H3O+ ions in a solution. Adding an acid increases the concentration of H3O+ ions in the solution. ... If an acid is added to a basic solution, the solution becomes less basic and moves toward the middle of the pH scale. This is called neutralizing the base.
What is the relationship between resource use and the amount of waste produced?
Answer:
In recent years, the concept of the circular economy and related policies have tackled resource use, production, consumption and waste at a high level.
Explanation:
hope it helps a lil
If the chloroplasts of a plant cell are damaged, which will it be unable to do?
a. protect the cell
C. excrete waste materials
b. make food for the cell
d. give instruction to the cell to reproduce
Answer:
Make food for the cell
Explanation:
Since the purpose of the chloroplast is to create energy for the cell, should it be damaged it would lose its ability to do so.
Hopefully this is a better answer
Answer:
I believe it is b
Explanation:
Chloroplast help to produce food and uses the suns sun rays or energy given off of it to produce one it’s green color and it well the food
Which process is represented by the arrow in the diagram below? A. regulation B. respiration C. growth D.excretion
Answer:
D is the correct answer
Explanation:
ur welcome :3
is the chemical reaction below A. Kinase B. mutase C. dehydrogenase D. isomerase E. none of the above
Answer:
I think it's either mutase or dehydrogenase, but I'm not exactly sure why. I haven't taken a chemistry class yet, so I don't know too much about it TBH.
Calculate the percent change of a population of geese that started with 40 individuals.
12 were born and 8 died. 6 geese immigrated into the population.
Ansew heheheheheheh
Explanation:
The β chains of HbA and HbS were treated with trypsin, and the sequence of the N-terminal tryptic peptides are as given below. Do these peptides separate from each other in an electric field if the pH is 7.0? Explain in detail the reasoning behind your answer and include your calculations for the charge of each peptide in your answer.
HbA: Val-His-Leu-Thr-Pro-Glu-Glu-Lys
HbS: Val-His-Leu-Thr-Pro-Val-Glu-Lys
Yes The two peptides will separate from each other in an electric field when the pH is 7.0
The two peptides wil drift/separate from each other when the pH is 7.0 because of the reaction of trypsin enzyme and also the difference in charge between HbA and Hbs
Considering charge of each peptide
Since The isoelectric point of normal Hba is 6.9 and Hbs possess two fewer negative charges per hemoglobin molecules
The Hbs is more hydrophobicity than HbA due to the substitution of glutamic acids of HbS by valine residue.
Considering Electrophoresis
At a lower pH level Hbs shows a slower moving band than Hba
while a higher pH level the HbS peptide is less negatively charged while the carboxyl group of HbA is more negatively charged and Hba moves faster as well as an acidic pH.
Hence we can conclude that the two peptides will separate from each other in an electric field when the pH is 7.0
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