Explain the difference between selective breeding and genetic engineering in the development of food crops with desirable traits.

Answer:

increases

Explanation:

Answer:

More impact on he planet.

Explanation:

The reason why is because there will be more population and cutting down of trees and pollution

Final answer:

Given the absence of gunshot residue on one individual besides the victim at the scene, the most likely conclusion is that this person was not beside the shooter when the gun was fired. D. The person was not beside the shooter is correct.

Explanation:

When Jonathan discovers that gunshot residue is absent on one of the people at the shooting scene, it suggests a few possibilities, but with the options provided, one stands out. Given that the victim also didn't have gunshot residue, it's reasonable to infer that someone not involved with the gunfire itself would likely be free from residue. Therefore, the absence of residue on another individual could indicate that they were not in proximity to the shooter when the gun was discharged. Interpreting evidence requires careful thought and consideration of all potential scenarios.

The most fitting conclusion from the given options is that this person was not beside the shooter. This would be consistent with the expectation that someone standing close to the shooter might have residue on them from being in close vicinity to the fired weapon. Hence, the correct option is:

OD. The person was not beside the shooter.

Answer:

On the surface of red blood cells

Explanation:

Antigens are found on the surface of the red blood cells and are ignored by the immune system but antigens of another blood type are seen as foreign and attacked by antibodies

Answer:

B.

The flagellates and termites share an obligate mutualistic association

Explanation:

Organisms of same or different species tend to interact with one another in an ecosystem. The close interaction between two organisms is referred to as SYMBIOSIS. A type of symbiotic relationship is MUTUALISM, which is when both organisms benefits from the relationship.

However, mutualistic relationship can be of different types depending on how dependent the involved organisms are on each other. The example in this question illustrates OBLIGATE MUTUALISM, which is when the organisms involved in the mutualistic relationship depend on one another for survival. This is the case of the termites and the flaggelates where the termite depends on the flaggelate for enzymes that helps them digest cellulose while the flaggelates depend on termite for nourishment/food.

The termite will not survive if it doesn't get enzymes to digest its cellulose while the flaggelates will also not survive if they do not get nourished. Hence, the two organisms share an OBLIGATE MUTUALISTIC RELATIONSHIP.

Termites and flagellates have an obligate mutualistic relationship where the flagellates digest cellulose for the termites, and termites provide habitat and food for the flagellates.

The association between termites and flagellates is described as an obligate mutualistic relationship. In this symbiosis, both parties are entirely dependent on each other to survive. The flagellates aid in the digestion of cellulose which is the primary food source of the termite. These protozoans possess bacteria that produce an enzyme called cellulase which is necessary for the breakdown of cellulose into sugars the termite can absorb. Conversely, the flagellates depend on the termites to provide them with a safe habitat and consistent food supply derived from the cellulose-rich wood that termites consume.

Final answer:

Ocean City, MD experiences warmer winters than Sterling, VA due to its proximity to the ocean, which moderates temperatures through the process of oceanality, while Sterling experiences more extreme temperature fluctuations due to continentality.

Explanation:

The reason Ocean City, MD has warmer winters than Sterling, VA can be attributed to the phenomenon known as oceanality, which is influenced by the proximity to the coast and the regulation of temperature by the ocean. In contrast, Sterling, VA experiences more continentality, which results in greater temperature fluctuations. The ocean impacts temperature on nearby coasts by warming the air in winter and cooling it in summer because water has a high heat capacity and changes temperature more slowly than land.

Oceans and large bodies of water like the Atlantic Ocean near Ocean City moderate temperature because they absorb heat during the warmer months and release it during the cooler months. This creates a milder climate with less extreme temperatures compared to inland areas. As Sterling, VA is located further inland, it lacks this moderating influence and thus experiences colder winters.

Answer:

Eukaryotic cell

Explanation:

In the given question, when the chromosomes were observed, the number of chromosomes was found to be 48 but are present in the homologous pairs that are 24 pairs are observed.

Since the chromosomes are observed as a homologous pair which is a characteristic feature of a eukaryotic cell. The prokaryotic cells just possess one chromosome which is circular in shape.

Since the observed cell possesses the chromosomes as homologous pairs, therefore the cell is a eukaryotic cell.

Answer: EDUCATED GUESS

Explanation:

They regulate the heart rhythm.

Heart valves prevent blood from flowing backwards, ensuring unidirectional flow that is essential for effective blood circulation throughout the body.

The function of the heart valves is crucial for the cardiovascular system, as they prevent blood from flowing backwards by ensuring unidirectional flow through the heart. There are four valves in the heart: the tricuspid valve, the pulmonary valve, the mitral valve, and the aortic valve.

These valves open to allow blood to move forward and close to prevent it from leaking back into the chamber it came from. This action is vital as it maintains the efficiency and pressure necessary for blood to reach all parts of the body. The unidirectional flow is necessary for efficient circulation, ensuring that oxygen-rich blood reaches the systemic circulation and deoxygenated blood reaches the lungs for oxygenation.

The second symbol would best represent an electric fan in electric circuit.

The first symbol represents an open circuit, the third is a resistor, and the fourth is a battery. That leaves us with only one option--the second one.

Answer:

c

Explanation:

Answer: A B C

Explanation: I did this and got it correct!

Surface Waves

Explanation:

A surface wave is a wave in which particles of the medium undergo a circular motion.

Answer: Surface Waves

Explanation:

In the nitrogen cycle, Nitrifying bacteria is responsible for converting ammonia into nitrates that can be used by plants. So, the correct option is (C).

The nitrogen cycle is defined as the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates in atmospheric, terrestrial and marine ecosystems where nitrogen is fixed through both biological and physical processes.

The processes which participate in the cycling of nitrogen through the biosphere:

(1) Nitrogen fixation,

(2) Decay

(3) Nitrification

(4) Denitrification.

The nitrifying bacteria convert ammonia to nitrites or nitrates where the Ammonia, nitrites, and nitrates are all fixed nitrogen and can be absorbed by plants.

Thus, in the nitrogen cycle, Nitrifying bacteria is responsible for converting ammonia into nitrates that can be used by plants. So, the correct option is (C).

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Answer:

B and D are the same answer..

It's B and D I suppose either one works

Explanation:

B. Because it formed during the period when oxygen began to accumulate in the atmosphere.

The Huronian Supergroup is a rock formation that formed about 2.4 billion years ago, during the Huronian Era of Earth's history. This period is particularly interesting to scientists because it marks the time when oxygen began to accumulate in the Earth's atmosphere.

Prior to this, the Earth's atmosphere was mostly composed of methane, ammonia, and other gases, and the development of oxygen in the atmosphere represented a major turning point in the evolution of life on Earth. As a result, the Huronian Supergroup and other rock formations from this period are of great interest to scientists studying the early history of the Earth and the development of life on our planet.

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Answer:

Question 3. C

Question 4. D

Question 5. C

Question 6. D

Question 7. B

Question 8. D

I didn't do this test, but I'm really good with genetics, so I hope this helps! good luck!!

Mendel's genetics has the laws that help to determine the characters of various chromosomes expression and the expression mechanisms. The same genes present on the allele is called as homozygous and the different ones are called as heterozygous.

It is the set of genetic expressions which express themselves in the genotype or phenotype of the individual.

Homozygous describes two of the same alleles that express a trait. That means the same of alleles that are controlling a single and same expression. The another one in which a different set of chromosomes are present are called as heterozygous.

Recessive  allele is hidden by the presence of another allele that is represented by a lowercase letter where the capital letter is called as a dominant trait expressing gene.

An organisms set of genes that are represented by letters is  called as genotype. It is controlling the genetic expression of an individual.

An allele is -expressed while it hides another. It is the expression where one of the allele is getting expressed and the another one is not terming them as dominant and recessive.

This allele tends to hide the presence of another allele, is expressed most often and is represented by a capital letter. It is the dominant gene.

The characteristics that are physically called as phenotype that control the physical features along with the physical expressions of an individual.

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Answer: C

Explanation:

i just took a quiz and that was the correct answer

Mosquitoes developed DDT resistance through natural selection, where mosquitoes with a genetic variation that allowed for DDT tolerance survived and reproduced, passing these advantageous genes to their offspring. Therefore, the correct answer is option C. The ones which had a genetic variant that was tolerant of the DDT survived and reproduced.

The development of DDT resistance in mosquitoes is a clear example of natural selection at work. The correct answer to why mosquitoes developed resistance to DDT is C. The process works as follows: when DDT was widely used, it killed off a large proportion of the mosquito population; however, within any population, there is genetic variation. During this selection process, only mosquitoes with a genetic variant tolerant of the insecticide survived and passed on their genes to the next generation. Over time, these resistant individuals became more prevalent. This explanation is rooted in biology, specifically genetics and evolution.

To elaborate, female mosquitoes did not purposely choose to mate with resistant male mosquitoes to ensure fit offspring. Resistance developed because of a natural genetic variation that provided some mosquitoes with a survival advantage in a DDT-rich environment. Similar resistance patterns have been observed in Plasmodium, the protozoan that causes malaria, which has become resistant to anti-malarial medicines due to over-prescription and subsequent selection pressures. The outcome of such adaptations is an increase in the proportion of individuals with the advantageous traits in a population.

Answer:

G-A-T-C-G-A-T-A-T-G-C-T-G-A

Explanation:

This is the complementary DNA strand that would be made. C links with G, G links with C, A links to T, and T links to A. Hope this helped :)

The complementary DNA strand for the given sequence 3'-T A C T G A C T G A C G A T C-5' is 5'-A G T G A C T G A C G T A G-3', following the base-pairing rules of A with T and G with C.

The original DNA strand given is 3'-T A C T G A C T G A C G A T C-5'. To create a complementary DNA strand during DNA replication, we need to add nucleotides that are complementary to each one on the original strand.

Here are the base pairing rules to know:

Using these rules, the complementary DNA strand to the given sequence, going in the 5' to 3' direction, would be 5'-A G T G A C T G A C G T A G-3'. Each original nucleotide has been paired with its corresponding partner.

Answer:

A. Transpiration

Explanation:

Transpiration is the process of water evaporating from the leaves of plants through holes on the underside of the leaf.

Final answer:

In the water cycle, transpiration (Option A) is the only step that requires living organisms, as it involves water movement through plants and out to the atmosphere.

Explanation:

The step of the water cycle that requires living organisms to occur is transpiration.

This process involves plants absorbing water through their roots, which then moves up through the plant and eventually evaporates from the leaves into the atmosphere. Unlike condensation, evaporation, and precipitation, transpiration specifically involves the biological process of plants.

While condensation is the process of water vapor cooling to form liquid water droplets and precipitation is the water droplets falling from the atmosphere as rain, snow, sleet, or hail, these do not require living organisms to happen. Therefore, the correct answer to the question is A. Transpiration.

Answer:

XP is autosomal recessive, with at least nine specific mutations able to result in the condition. Normally, the damage to DNA which occurs in skin cells from exposure to UV light is repaired by nucleotide excision repair. In people with xeroderma pigmentosum, this damage is not repaired.

Explanation:

Answer:

XP is autosomal recessive, with at least nine specific mutations able to result in the condition. Normally, the damage to DNA which occurs in skin cells from exposure to UV light is repaired by nucleotide excision repair. In people with xeroderma pigmentosum, this damage is not repaired.

Explanation:

Answer:

I’m pretty sure its C. The fish fighting as hard as a boxer in the ring.

I hoped this helped :)

The phrase 'the fish fighting as hard as a boxer in the ring' is a simile, as it uses comparison between two different things using 'as' to emphasize the effort of the fish.

In this case the phrase that is an example of a simile from the paragraph provided is 'the fish fighting as hard as a boxer in the ring'. A simile is a figure of speech that makes a comparison between two unlike things using words like 'as' or 'like', and this phrase fits that definition. The phrase compares the struggle of a fish to the determined effort of a boxer fighting in a ring. Here, the fish's effort is emphasized through the comparison to a professional athlete. Therefore, looking out for such phrases can assist in identifying similes in text.

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Answer:

Oxygen gas

Explanation:

Photosynthesis is where carbon dioxide, water, and sunlight are turned into oxygen, and glucose (energy for the plant). The only gas released is oxygen.

Answer: Option A.

It did not explain the mechanism causing the movement of continents.

Explanation:

The continental drift theory was proposed by A geophysicist Alfred wengener In 1912 but it was rejected by many scientists due to lack of motion mechanism. This theory explained why Continent shift position on the Earth surface. It was rejected because there was not scientific evidence to prove how continents move.

The continental drift theory proposed by Alfred Wegener was initially rejected because it did not provide a satisfactory explanation for the mechanism responsible for the movement of continents. It wasn't until the development of plate tectonics in the mid-20th century that the concept of moving continents became generally accepted.

The continental drift theory was first proposed by Alfred Wegener in 1912. This theory suggested that the continents were once joined together in a single landmass and have since drifted apart. However, this proposal was largely rejected by the scientific community at the time.

One of the main reasons for its initial rejection was that Wegener could not provide a satisfactory explanation or mechanism to account for the movement of the continents. Although he proposed that the continents 'ploughed' through the ocean floor, this was deemed to be physically impossible with the understanding of physics at the time. Therefore, despite some matching geological and palaeontological evidences between different continents, the lack of a plausible mechanism for the drift led to the rejection of Wegener's theory.

It wasn’t until the mid-20th century with the development of plate tectonics, where scientists understood that the crust of the earth is broken into plates that move relative to each other, that the idea of continents moving became widely accepted.

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Answer:

The 4th one (D) Rapid Population Increases

Explanation:

on edge 2020

Answer:

E. Air Mass

Explanation:

The definition of an air mass is "a body of air with horizontally uniform temperature, humidity, and pressure."

Answer:

E. Air Mass

Explanation:

The soil in question is option C - loamy sand.

Loamy sand is a soil composition dominated by sand particles, with a small amount of clay particles. According to the soil textural triangle, loamy sand is a soil composition mostly consisting of sand particles (the largest particles) and a smaller amount of clay particles (the smallest particles). The 85% composition of weathered sandstone indicates a high concentration of sand, making loamy sand the most appropriate classification.

The soil textural triangle classifies soils based on their composition of sand, silt, and clay. Each corner of the triangle represents 100% composition of one of these particles: sand, silt, or clay.

Given that the soil is 85% composed of weathered sandstone,

The soil's composition aligns with the characteristics of loamy sand, which is a mixture of sand and a small amount of silt or clay. Therefore, the soil is mostly likely loamy sand.

Answer:

Energy

Explanation:

Answer:

Wavy haired would be SC, seeing as it is "heterozygous," meaning it has one of each allele. This is called incomplete dominance, where neither allele is expressed fully over the other.

Answer:

C .nutrients

Explanation:

Answer: C Nutrients