I have a flashlight in a dark room. Describe what you could do to create a shadow on a wall. What causes the shadow?
Answer: u can make whtever u want, the shawdow i think its a uhh sum2 do with the light and stuff ':l
Explanation:
What was the purpose of harndy and Weinberg work
its shows the percentage of alleles in a gene pool that will remain in equilibrium when there is no new mutation
What is extinction? Explain how human activities can lead to extinction of some species.
Ways on how earth is affected by climate change and ways to fix those problems
Answer:
ways on which earth is affected by climate change.
1. Global warming
2. Air pollution
3. Water pollution
4. Desertification
5. Deforestation
ways to fix those problems
1. Renewable energies: Changing our main energy source to clean and renewable energy. Solar, wind , geothermal and biomass could be the solution.
2. Suitable transportation: Our transport methods must be aligned with environmental requirements and reduce their carbon footprint.
3. Waste management and recycling.
Which best describes
parasympatric speciation?
A. A physical barrier is formed between two populations.
B. A new species arises in the same location due to behavior changes.
C. A new species arises and is a hybrid of two nearby populations.
Over time, is the Nazca Plate going to get bigger, get smaller, or stay the same size? Use your model to explain why.
Pls fast
Answer:
The Nazca Plate is getting smaller
Explanation:
Although parts of its western boundary with the Pacific Plate are divergent, places where plates can increase.
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Examine this map to help you respond to the question:
What is the most likely elevation of point B?
75 feet
105 feet
125 feet
80 feet
Which statement correctly describes the relationship between frequency and wavelength?
A :As the frequency of a wave increases, the longer its wavelength is
B: As the frequency of a wave increases, the shorter its wavelength is.
C: As the frequency of a wave increases, its wavelength remains the same.
Answer:
It's B: As the frequency of a wave increases, the shorter its wavelength is.
Explanation:
Thanks
Answer:
B: As the frequency of a wave increases, the shorter its wavelength is.
Explanation:
Which of the following best describes the connection between cardiovascular disease and
age?
O A. As people age, their blood vessels become more elastic leading to less cardiovascular disease.
O B. As people age, the heart becomes more efficient with each pump, increasing cardiac output
O C. As people age, blood pressure decreases leading to more cardiovascular disease.
O D. As people age, plaque builds up in the arteries increasing vessel resistance, which leads to disease.
Answer:
b
Explanation:
What is the name given to the square frame used for sampling organisms in an environment?
Please help with question
Define the meaning of recessive
Answer:
A type of allele which will not be manifested in an individual unless both of the individual's copies of that gene have that particular genotype.
Explanation:
What is the phenotype ratio for the Punnett square?
• 2:1
• 3:1
• 0 1
• 1:1
What are some benefits from high biodiversity in natural habitats?
Select all that apply.
greater variety of medicines
O greater productivity of farmland
greater ability to recover after natural disasters
greater variety of food sources
Greater ability to recover after natural disasters and greater variety of food sources. Thus, the correct option is C.
What is natural disaster?A natural event such as a flood, earthquake, or hurricane that causes great damage or loss of life. "The number of people suffering food crises as a result of natural disasters has tripled in the last thirty years.
Biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services.
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How many bacteria flagella are use for lomotion
Answer:
Bacteria can have one flagellum or several.
What percentage of the world does not have access to clean fresh water?
15%
15%
25%
25%
40%
40%
35%
Answer:
25% of the world does not have access to clean fresh water.
Explanation:
ME IS SMART
use 7. Why is being a union organizer a dangerous thing to do? Why is it a helpful thing to do?
Answer:
It is important because they help set the standards for education, skill levels, wages, working conditions, and quality of life for workers. Union-negotiated wages and benefits are generally superior to what non-union workers receive. Most union contracts provide far more protections than state and federal laws.
Explanation:
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Which table shows the expected phenotypes of offspring resulting
from a cross between a black angelfish and a black-lace anglefish?
In codominance, the involved alleles are equally expressed. Heter0zyg0us individuals express both phenotypes. Option A: 0% Silver, 50% Black, 50% Blak-lace.
What is codominance?Codominance refers to a non-mendelian inheritance pattern in which two alleles of the same are equally expressed. There is no dominant or recessive alleles, since non of them hides the expression of the other one in heter0zyg0us individuals.
The phenotype of a heter0zyg0te expresses two alternative variants inherited from each h0m0zyg0us parent.
When two individuals that are h0m0zyg0us and different for a trait are crossed they produce heter0zyg0us individuals.
These heter0zyg0us individuals express both parental phenotypes, as it is an additive expression of their parents' genes.
In the case of angelfish, their color is determined by codominance.
Genotype Phenotype
LL Silver
BB Black
LB Black-lace
Cross: between a black angelfish and a black-lace anglefish
Parentals) BB x BL
Gametes) B B B L
Punnett square) B B
B BB BB
L BL BL
F1) 1/2 = 50% of the progeny is expected to be h0m0zyg0us BB, expressing the black phenotype
1/2 = 50% of the progeny is expected to be heter0zyg0us Bb, expressing the black-lace phenotype
Option A is the correct table:
Phenotype Silver Black Black-Lace
Phenotypic
probability of the 0% 50% 50%
offspring
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what is an example of codomiance
Codominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed. So if an individual inherits allele A from their mother and allele B from their father, they have blood type AB.
Which type of mutation always produces a stop codon?
Answer:
A nonsense mutation is the substitution of a single base pair that leads to the appearance of a stop codon where previously there was a codon specifying an amino acid
According to the 1980 Superfund Act, who is responsible for cleaning up haz-
ardous waste disasters?
A
The company who caused the disaster
B
No one, it is not important to clean up hazardous waste.
С
The local neighborhood
D
The local firefighters
Why is the patellar stretch reflex beneficial?
Answer:
The Patellar reflex is beneficial because it maintain posture and balance and to ensure that the muscles remain at the length the brain sets.
Explanation:
suggest 2 measures to be adopted by a county to fight against smoking
Explanation:
1. Raise Public awareness against it.
2. Stop supply of smoke
how does white pigeon occur
Answer:
the genomes in the pigoens DNA can cause certain effects in the pigment in the feathers. Sometimes it is also better for the survival of the animal, so it can survive better in lighter or darker enviornments
Explanation:
Which reptiles live in and around swamps or bodies of
freshwater or salt water?.
Answer:
Crocodile, alligator, snakes.
two factors that will increase a substance's solubility.
Three ways I can come up with are increasing the temperature, increased the amount of solvent, and using a solvent with similar polarity as the solute.
When the structure of genes is changed, a change to the structure or function or proteins of a protein can result. This is called a mutation. Which event represented a mutation?
Explanation:
DNA is a dynamic and adaptable molecule. As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation.
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Explain how a mutation near, but outside of, the coding region of Pitx1 may cause a loss of pelvic fins without pleiotropic effects on the pituitary gland and jaw.
Since the Pitx1 gene codes for a protein crucial im lower limns development, a mutation occurring near Pitx1 gene will affect refikjs around the lower limbs but not those far away from it.
What are mutations?Mutations refers to alterations or error that occur which change the original sequence of nucleotides in a DNA molecule.
The Pitx1 gene is a gene that codes for a protein that involved in development of the lower limbs.
A mutation near but outside of the coding region of Pitx1 may cause a loss of pelvic fins without pleiotropic effects on the pituitary gland and jaw because the pelvic fins form part of the lower limbs whole the jaws and the pituitary gland are not found in the lower limbs.
Therefore, the mutation occurring near Pitx1 gene will affect regions around the lower limbs but not those far away from it.
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What was the purpose of Mendel's experiments with dihybrid crosses?
A. to determine if it's possible to produce an F2 generation
B. to determine if one trait could affect the inheritance of another trait
C. to determine if traits are controlled by more than one gene
D. to determine if the transforming Factor was DNA or protein
Answer:
B. to determine if one trait could affect the inheritance of another trait
Explanation:
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Which ocean movement do power plants use to produce unusable energy?
Answer:
Tides
Explanation:
The intensity of the water from the rise and fall of tides is a sort of kinetic energy, and tidal energy is generated by the movement of our tides and seas. Gravitational hydropower, which uses the flow of water to drive a turbine to create energy, is surrounded by tidal power.