Factories and cars release pollutants into the atmosphere. These pollutants can dissolve in the water vapor in the atmosphere. What is a LIKELY result of the mixing of pollutants with water vapor?
A) drought
B) acid rain
C) brush fires
D) heavy rainfall
How did the hydraulic jack help Neil do his job? A. It decreased the force of gravity on the pallet. B. It increased the force he could use to lift the pallet. C. It decreased the distance over which he had to move the pallet. D. In increased the force he could use to push the pallet. Reset Submit
The answer is B. His force was multiplied several folds by the hydraulic jack so he was able to lift the pallet, with less effort. Hydraulic lifts work on the principle of P = FA and that P1 = P2. If the area of the lifting cylinder is greater than that of the cylinder on which the effort is applied, the potential output at the bigger lifting cylinder is greater compared to that applied.
What tool is used to track inherited traits between parents and offspring?And be specific HURRY!
Answer:
It is called pedigree chart
Explanation:
Semret is walking across a balance beam. Which part of his brain is helping him stay balanced? cerebrum cerebellum brain stem
Answer:
The correct answer is cerebellum. This part of your brain controls balance.
Explanation:
Odyssey
Diego hypothesizes that the Earth wobbles on its axis in a pattern that is repeated every 20,000 years.
Which of the following ways would be the best way to test Diego's hypothesis?
A.conduct a controlled experiment
B. Observe the movement of other experiments
C. Make observations in nature
D. Make a model
THE ANSWER IS: Make a model
Different scientific questions and hypotheses require different types of scientific investigations. Some questions can be answered through controlled experiments. Other questions can be answered through collecting specimens, building models, and/or making observations.
For example, questions about events that occur over thousands of years are best studied through models.
all cells (prokaryotic and eukaryotic) have few common features. which cell feature is found in both prokaryotic and eukaryotic cell? A chloraplast B ribosome C nucleus D sodium
The ribosome is a common cell feature between prokaryotes and eukaryotes. So the correct option is B.
What are ribosomes?The process of making proteins in a cell takes place at an intercellular structure called a ribosome, which is formed of both RNA and protein. The messenger RNA (mRNA) sequence is read by the ribosome, which then converts the genetic code into a specific string of amino acids that develop into extended chains and fold to create proteins.
The biological machinery that produces proteins is known as a ribosome. Each cell has several ribosomes, which are each composed of two subunits. These two subunits form a tight seal around the messenger RNA molecule before moving down its length and reading each three-letter codon.
The transfer RNA, whose base sequence matches that of the messenger RNA, docks to the ribosome. A specific amino acid can be added to the end of the expanding protein chain by pairing each three-letter messenger RNA codon with the corresponding anticodon on a particular transfer RNA. Once the protein is finished, the ribosome fragments.
Therefore the correct option is B.
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The Ring of Fire is a major belt of volcanic activity circling the Pacific Ocean. True or False?
how is one molecule of ATP formed from one molecule of ADP
what is the average salinity of ocean water 34.5 g/kg 0.345 g/kg 345 g/ml 3.45 g/kg
3 ways rna differs from dna
RNA differs from DNA in being single-stranded, containing the sugar ribose instead of deoxyribose, and having the base uracil instead of thymine.
In biology, RNA and DNA are both crucial nucleic acids that differ in several important ways:
Single-Stranded vs. Double-Stranded: RNA is typically single-stranded, whereas DNA is double-stranded, forming a double helix structure.Ribose vs. Deoxyribose: RNA contains the sugar ribose, while DNA contains deoxyribose, which lacks an oxygen atom compared to ribose.Uracil vs. Thymine: RNA has the base uracil (U) instead of thymine (T), which pairs with adenine (A) in RNA just as thymine pairs with adenine in DNA.These differences play crucial roles in their respective functions in genetic information storage and protein synthesis.
which of the following could possibly increase genetic variation indirectly
One parent mouse has white fur (bb). The other parent mouse has black fur. Some of the offspring produced from their cross have white fur. What genetic makeup did this parent with black fur have in order to produce some offspring with white fur? explain it to please :)
The mouse parent probably had a genetic makeup of Bb meaning that there is a gene of the white hair within their own genes of a dominate black hair. Since the white hair mouse had a complete recessive gene makeup of white hair and black hair is dominate in this situation the only genetic makeup that would work would have to be dominate recessive for the dominate gene is the one that shows but that mouse parent cannot be completely dominate or there would be no white haired offspring
What are the answers for the 10.6 volcanoes and plate tectonics enrich?PLEASE HELP!
suppose Mendel crossed two pea plants and got both tall and short offspring. what could have been the genotypes of the parent plants? what phenotype could not have been present? Be sure to explain why.
If Mendel crossed two pea plants and obtained both tall and short offspring, then it is possible that the parent plants were both heterozygous for the gene that controls the height.
What could have been the genotypes of the parent plants?When these alleles combine in the offspring, there is a 25% chance of getting a homozygous dominant (TT) plant (which would be tall), a 50% chance of getting a heterozygous (Tt) plant (which would also be tall), and a 25% chance of getting a homozygous recessive (tt) plant.
Therefore, it is possible that the parent plants were both heterozygous (Tt) for the height gene, which would result in both tall and short offspring.
The phenotype that could not have been present would be a plant with an intermediate height between tall and short, as this is not how the height gene is inherited in pea plants.
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The parent pea plants Mendel crossed to produce both tall and short offspring were likely heterozygous tall (Tt x Tt). Medium-sized plants could not have been present because pea plant height does not exhibit incomplete dominance. A Punnett square for this cross would show a genotypic ratio of 1:2:1 and a phenotypic ratio of 3 tall: 1 short.
Explanation:If Mendel crossed two pea plants and got both tall and short offspring, the genotypes of the parent plants could have both been heterozygous for the tall trait (Tt). A heterozygous organism has one dominant and one recessive allele for a trait, so when crossed with another heterozygous organism, they can produce offspring with a mix of phenotypes. Tallness is a dominant trait in pea plants, while shortness is recessive.
The phenotype that could not have been present in the offspring of two heterozygous tall plants is medium-sized plants. This is because height in pea plants does not exhibit incomplete dominance, where a blend of traits might be present, but follows Mendel's principle of dominance. Hence, the tall trait (T) being dominant would mask the expression of the short trait (t) in a heterozygous organism (Tt), resulting only in tall plants. A short offspring could only appear if it were homozygous recessive (tt), receiving a recessive allele (t) from both parents.
Using a Punnett square to predict the offspring of a cross between two heterozygous tall pea plants (Tt x Tt), the genotypic ratio would be 1 TT : 2 Tt : 1 tt, which corresponds to a phenotypic ratio of 3 tall : 1 short. This is because the chance of an offspring receiving two dominant alleles (TT), one of each (Tt), or two recessive alleles (tt) varies, with TT and Tt resulting in the tall phenotype and only tt resulting in the short phenotype.
Explain the role of the digestive, endocrine, and excretory systems in maintaining homeostasis.
The digestive system maintains homeostasis by creating the proper pH balance in the gastric environment. In addition, by maintaining the correct enzyme ratio, the digestive system nurtures beneficial bacteria that inhibit disease and produce biological substances the body needs such as vitamin K.
Homeostasis is the balance the body maintains to continue to function properly. All the bodily systems, including the digestive system, contribute to homeostasis. The body maintains homeostasis using both positive and negative mechanisms. Negative feedback occurs when the body senses an imbalance, and the various systems work to counterbalance and restore proper equilibrium. Positive feedback happens when the body senses a change and works to enhance it.
The digestive, endocrine, and excretory systems play crucial roles in maintaining homeostasis, which is the balanced and stable internal environment required for optimal bodily function.
What is the role of food breakdown in maintaining homeostasis?The digestive system is responsible for breaking down food into nutrients that can be used by the body, and eliminating waste products. It plays a key role in maintaining homeostasis by regulating the absorption and distribution of nutrients, as well as removing waste and toxins from the body.
The endocrine system is responsible for producing and releasing hormones, which act as chemical messengers that regulate various bodily functions.
Hormones are involved in a wide range of processes that help maintain homeostasis, including regulating metabolism, controlling blood sugar levels, and maintaining fluid balance.
The excretory system is responsible for removing waste products from the body, including excess water, salts, and metabolic waste products such as urea.
This system plays a key role in maintaining homeostasis by regulating the concentration of electrolytes and other substances in the body fluids, as well as regulating fluid balance and blood pressure.
Overall, the digestive, endocrine, and excretory systems work together to maintain homeostasis by regulating the intake, processing, and elimination of nutrients and waste products, and by ensuring that hormones and other chemical messengers are released in the right amounts to regulate bodily functions.
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When comparing bones from ancient fossils and modern bones--what is the primary technique do scientists use to compare the bones? Question 3 options: Chemical composition of bones DNA printing Bone density Observation with eyes
How do hurricanes form?
Hurricanes form as a result of rising warm water and circulating winds.
hope this helps >.<
Which statement about vacuoles is true
What causes might create a disturbed rock layer?
Final answer:
Disturbed rock layers can be caused by decreased water content, freezing and thawing, plant growth, animal activity, removal of overlying pressure, and seismic activity. These factors can weaken the rock structure and lead to geological events such as landslides.
Explanation:
Several factors can lead to a disturbed rock layer, affecting its structure and stability.
A decrease in water content, particularly in clean sand deposits, reduces the strength of the grains, making them susceptible to failure. This can be caused by a general drying out of the area or by human activities that lower the water table.
Freezing and thawing cycles resulting in physical weathering are common in cold climates. This process can expand and contract rocks, eventually leading to rockfalls and other forms of mass wasting.
Vegetation growth and animal activity, such as the expansion of plant roots and burrowing, can physically disrupt rock formations.
The removal of overlying pressure, either by natural erosion or human activities like mining, can cause underlying rock to expand and fracture.
Chemical weathering from the formation of salt crystals and other processes can break down the integrity of rock layers.
Seismic activity, like earthquakes, or even vibrations from traffic and construction, can significantly disturb and weaken rock layers.
Collectively, these factors contribute to shaping the earth's surface, influencing geological events like landslides, and causing the formation of features such as fractured rock layers, tilted or folded beds, and even faults in the earth's crust.
In a deciduous forest ecosystem, a white-tailed deer eats tree leaves while a Cooper’s hawk hunts a downy woodpecker. In the ground, earthworms break down leaves. The Cooper’s hawk is classified as a A producer B decomposer C parasite D consumer
Answer: Consumer
Explanation:
Consumers are the organism that feed on the producers for their energy source.
The producers are the green plants that make food by the help of the process known as photosynthesis.
The consumers feed on the plants for their energy need(primary consumers).The animals that feed on small animals for their energy needs are known as secondary consumers.
Here, the hawk feed on woodpecker so it is secondary consumer.
50 points if you answer right
In a monohybrid cross, if the gene for tall (T) plants was incompletely dominant over the gene for short (t) plants, what would be the predicted result of crossing two intermediate (Tt) parent plants? (Hint: You may want to complete a Punnett square.) 25 percent tall, 50 percent intermediate, 25 percent short 50 percent tall, 25 percent intermediate, 25 percent short 100 percent intermediate 25 percent tall, 75 percent intermediate
In a monohybrid cross, if gene for tall (T) plants was incompletely dominant over the gene for short (t) plants, it will give plants with intermediate tall (Tt) in first filial (F1) generation. When the F1 offspring consisting of all intermediate tall are allowed to cross, the resulting (F2) offspring consist of all three phenotypes [25% tall (TT): 50% intermediate tall (Tt): 25% short (tt)]. The phenotypic ratio is 1:2:1.
A pea plant with round seeds (RR) is crossbred with another pea plant with wrinkled seeds (rr). What is the probability of the offspring having wrinkled seeds? 0% 25% 50% 75%
Answer:
0%
Explanation:
The cross of a pea plant with round seeds (RR) with another pea plant with wrinkled seeds (rr) is shown as under :
P RR x rr
F1 Rr Rr Rr Rr
It is clear from the cross above, all the 4 probable progenies in filial 1 (F1) generation will be heterozygous with Rr genotype. Not even a single progeny will have homozygous recessive genotype which is responsible for producing wrinkled seeds. Also, even though the genotype of the progenies will be Rr not RR yet phenotypically they all will have round seeds i.e. they will show dominant trait. The reason behind it is that one of the alleles R which is responsible for dominant trait will mask the expression of recessive allele r. So, wrinkled phenotype which is a recessive trait will not be observed in any of the progenies.
Iguanas are living in a relatively dry habitat. Genotypes and phenotypes for iguana feet can be seen above. The population of iguanas in the dry habitat contained individuals that did not have webbed feet. Over three generations, the phenotype of the iguanas changed although the habitat did not. The ratio of webbed to non-webbed feet changed over time from 100% not webbed:0% webbed to 50% not webbed: 50% webbed. Elaborate on the reason for the change in phenotype within the population
Changes in the iguana population's phenotype over generations suggest that natural selection favored the webbed feet trait as an adaptation, leading to its increased frequency in the gene pool.
The change in phenotype of the iguana population from 100% non-webbed feet to a 50% non-webbed: 50% webbed ratio over three generations can be explained by evolution and natural selection. The iguanas with the webbed feet phenotype may have had an adaptive advantage in the relatively dry habitat, which could include better mobility over sandy terrain, leading to increased survival and reproductive success. This adaptation would result in the webbed feet trait becoming more common in the population. The concept of natural selection, as observed by Darwin in the Galápagos, can also be applied here—traits that enhance an organism's fitness in its environment become more prevalent over generations. Additionally, the study of urban lizards in Puerto Rico provides real-world evidence that rapid genetic differentiation and adaptive changes can occur in response to environmental pressures, although the exact environmental factors selecting for webbed feet in this case are not specified.
100 POINTS!!!!!!!!!! BRAINLIEST!!!!!!!! HURRY FOR POINTS!!!!!!!!!! _________________________________________________________________________________________________________________________________________________________________________________________________________________________
What are galaxies, and what types of celestial objects do they contain? ___________________________
_________________________
Describe our own galaxy, the milky way. ___________________________________________________________
___________
What famous astronomer came up with a classification scheme for galaxies? ______________________
List and describe the 4 different types of galaxies.
_________________ ______________________ ___________________ ______________________
1) Scientists have undertaken an extensive project of mapping the location of galaxies. What have they
found regarding the distribution of galaxies?
_____________________________________________________________________
Which of the following evidence changed the theory of plate tectonics? Age of rocks and mountains Fossils Magnetism Size and shape of continents
write the dna complementary strand for GGCATTCGCGATCATG
Nucleic acids are polynucleotides of very high molecular masses in which the nucleotide units are linked through phosphate ester linkages. DNA is one of the nucleic acids. The DNA complementary strand for GGCATTCGCGATCATG is CCGTAAGCGCTAGTAC.
What is DNA?In deoxyribonucleic acid or DNA, the sugar unit present is 2-deoxy- D -ribose. The heterocyclic nitrogenous bases present in DNA are Adenine (A), Guanine (G), Cytosine (C) and thymine (T). The first two are purines while the next two are pyrimidines.
The DNA molecule consists of two strands of polynucleotide chains coiled around each other about a common axis in the form of a right handed double helix. The nucleotides are connected by phosphodiester bonds.
The base pairing in DNA occurs in such a way that Adenine pairs with thymine and Guanine pairs with Cytosine. This is called base complementarity.
Thus the complementary strand is CCGTAAGCGCTAGTAC.
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¿Que sucede cuando se carga un cuerpo por induccion electrostatica?
A) al poner contacto un cuerpo cargado positivamente con otro nuetro, pasarán electrones del neutro positivo. Ambos quedarán pegados positivamente.
B) al poner en contacto un cuerpo cargado positivamente con otro neutro, pasarán electrones del positivo al neutro. El neutro quedara cargado negativamente y el posotivo seguirá cargado positivamente
C) al poner en contacto un cuerpo cargado positivamente con otro neutro, pasarán protones de neutro al posotivo. El neutro quedará cargado negativamente y el positivo seguirá cargado positivamente.
D) al poner en contacto un cuerpo cargado positivamente con otro neutro, pasarán protones del positivo al neutro. Ambos quedarán cargados positivamente.
another Punnett square that shows a cross between a heterozygous red bull (Rr) and a heterozygous red cow (Rr). Determine the ratios of the genotypes and phenotypes for hair color resulting from this cross
Answer:
The proportions of genotype and phenotype for this cross are:
50% Rr = color color determined by the dominant (red) allele.
25% RR = Color coloring determined by the dominant allele (red).
25% rr = Coloration of the color determined by the recessive allele.
Explanation:
As you can see in the image attached below, the cross between a red ox (Rr) and a red cow (Rr) would result in an offspring composed of 50% of individuals with the Rr alleles, 25% of individuals with the RR alleles and 25% of individuals with the rr allele.
As the ox and cow that are the parents are red, we can confirm that this is the phenotype presented by the dominant allele. This is because heterozygous individuals, such as the progenitors of that crossing, present the phenotype determined by the dominant allele, since the recessive alleles are inhibited when together with a dominant allele.
For this reason, we can say that within the offspring, those individuals with the "RR" and "Rr" alleles will have a red color, which is shown by the dominant allele. Individuals who have the "rr" alleles, on the other hand, will have the color determined by the recessive allele.
Which type of fossil evidence helps determine the evolutionary relationship between two hominid species? A. Bone color of each species B. Skull size of each species C. Femur shape of each species D. Number of fossils of each species
Answer:
Skull size of each species
Explanation:
An increase in food and a decrease in predators would most likely genetic variation in a population
An increase in food and a decrease in predators would most likely genetic variation in a population and the growth of the population is slow.
What is population density?The average number of individuals per unit area in a population is known as population density. For the calculation of population density, the formula is population density which is denoted by D equals the number of people denoted by N divided by area per cubic kilometers denoted by S. Therefore, D= N/A.
The use of the calculation of the population density is for the estimation of the population in a particular area. The factors affecting population density are an increase in the number of predators, food, and water sources, a decrease in the living area, and climatic changes.
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