what percentage of american black genes are european

The telephone rings. Nerve impulses begin when the nerves in the ear picks up the stimulus of the telephone ringing.

The nerve impulse moves to neurons in the brain. The brain interprets the impulses and decides to answer the phone.

Nerve impulses from the brain move to arm muscle. The muscles contract in response, and you pick up the telephone.

Nerve impulses are described as electrical signal that travels along a nerve fiber in response to a stimulus and serves to transmit a record of sensation from a receptor or an instruction to act to an effector.

Learn more about nerve impulses at: https://brainly.com/question/1182219

#SPJ1

Gotchu.

The element that is not one of the six elements that can combine to form large biomolecules in living things is A. Helium.

Helium is an inert gas and does not typically participate in chemical reactions to form biomolecules. The six elements that are commonly found in biomolecules are carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur.

The correct answer is C. Drinking and cellular respiration

During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell and carbon dioxide and water are created as byproducts.

6 O2 (g) + C6H12O6 (aq) → 6 CO2 (aq) + 6 H2O (aq) + ATP

Ultra violet (UV) Visible.

mark me brainliestt :))

Answer

1 and 5.

Explanation:

When Kepler 47c is in positions 1, 4, and 6, a lunar eclipse may happen. The correct option is A, F, and G.

Thus, a lunar eclipse occurs when the Earth passes in front of the Sun and the Moon, casting a shadow on it. It is a full moon when this alignment takes place.

A lunar eclipse would occur if the Moon were in position 1 to be on the other side of the Earth from the Sun. Depending on the precise alignment of the Sun, Earth, and Moon, positions 4 and 6 would also put the Moon in a position where it may undergo a lunar eclipse.

Thus, the ideal selection is option A, option F, and option G.

Learn more about lunar eclipse here:

https://brainly.com/question/12075389

#SPJ2

During quiet breathing, the diaphragm and external intercostal muscles contract. The thoracic cavity's effect is that it increases in volume, leading to a decrease in air pressure within the cavity.

The diaphragm and external intercostal muscles work together to cause quiet breathing. The diaphragm, a dome-shaped muscle that separates the thoracic and abdominal cavities, contracts and flattens during quiet breathing. The external intercostal muscles, which run between the ribs, also contract at the same time. These muscles aid in the expansion of the thoracic cavity.

As a result, the volume of the thoracic cavity increases, resulting in a decrease in air pressure within the cavity. This allows air to flow into the lungs, resulting in inhalation. The opposite occurs during exhalation, when the diaphragm and external intercostal muscles relax and the thoracic cavity decreases in volume, causing an increase in air pressure and allowing air to flow out of the lungs.

learn more about diaphragm here

https://brainly.com/question/4937745

#SPJ11

Multiple lines of evidence support the concept of common ancestry and evolution, providing a cohesive understanding of the biological diversity observed on Earth.

One key line of evidence comes from comparative anatomy, where similarities in the structures of different organisms reveal commonalities and suggest a shared ancestry. For example, the pentadactyl limb structure found in various vertebrates, including humans, whales, bats, and birds, indicates a common ancestor with a five-digit limb. Such shared anatomical features suggest that organisms have evolved from a common ancestor and have undergone modifications over time.

Another line of evidence is found in comparative embryology, which examines the development of organisms from fertilization to birth. Similarities in early embryonic development among different species further support the notion of common ancestry. For instance, the presence of gill slits in the embryos of vertebrates, even though they might disappear in later stages, suggests an evolutionary link to a common ancestor that had gills.

Genetic evidence provides compelling support for common ancestry as well. DNA sequencing has revealed remarkable similarities in the genetic makeup of different organisms. By comparing DNA sequences, scientists can determine the degree of relatedness between species. For example, the close genetic similarity between humans and chimpanzees, with whom we share a common ancestor relatively recently, supports the idea of common ancestry.

Fossil records also provide significant evidence for common ancestry and evolution. The discovery of transitional fossils, which exhibit characteristics of both ancestral and descendant species, helps fill in the gaps and provides a clearer picture of the evolutionary pathways. Fossil evidence shows the gradual changes and transitions between species over time, supporting the idea that organisms have evolved from earlier forms.

To know more about biological diversity

https://brainly.com/question/1253532

#SPJ11

Answer:

A liquid moving from an area of low concentration, to an area of high concentration through a semi-permiable membrane.

Explanation:

Hope this helps :)

Answer:

Explanation:

A restaurant makes three batches of tomato soup using the recipe shown.

Each batch contains a different amount of soup.

Drag numbers to show how much of each ingredient should be used in each batch of tomato soup.

18 of the soup is chicken stock.

14 of the soup is cream.

58 of the soup is tomato puree.

CLEAR CHEC

Human sewage can contain bacteria, viruses, and parasites that can potentially be harmful to human health. However, these pathogens can be eliminated through various forms of treatment, such as filtration and chlorination. In contrast, chemical sewage refers to wastewater that contains pollutants such as heavy metals, solvents, and pesticides, which can be toxic to human health and the environment. Unlike pathogens, these pollutants cannot be destroyed through standard sewage treatment processes, and they can persist in the environment for many years. Therefore, chemical sewage is generally considered more harmful than human sewage.

Answer:

shorter and higher

Explanation:

UV  is further along in the EM spectrum so has a higher frequency and shorter wavelengths than visible light.

Answer:

the characteristics of life are sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing.

Explanation:

a dog responds to stimulus such as pets.     they reproduce and have puppies, and also grow in size over time. they process energy by eating food, which helps them maintain homeostasis.

Answer:

In 15 years, these lizards' toe pads have become larger, with more sticky scales on their feet. The study's authors say these adaptations are a response to an invasive species, the brown anole (Anolis sagrei), that came from Cuba and arrived via agricultural shipments coming to South Florida in the 1950s.

Explanation:

Explanation:

Increase in enzyme concentration will provide faster metabolic reaction to the point of saturation of the enzymes active center.

The statement "Food processing involves ingestion, digestion, absorption and excretion/elimination" is true.

This is due to the fact that digestion starts with the ingestion of food and it ends with the elimination of waste materials from the body.Food processing is a method that transforms raw foodstuffs into marketable food products, while taking into account economic and technical considerations. Food processing consists of several methods of food preservation that can be used to extend the shelf life of food, to protect against the growth of bacteria, and to create more appealing and convenient foods for consumers.

The ingestion of food takes place in the mouth, where food is chewed and broken down into smaller pieces by the action of enzymes. Once in the stomach, digestive enzymes break down the food into smaller molecules that can be absorbed by the body. The absorbed nutrients are then transported to various parts of the body where they are used to build and repair tissues, provide energy, and maintain body functions.

To know more about digestion visit:

brainly.com/question/31260322

#SPJ11

Answer:

The nitrogen cycle represents one of the most important nutrient cycles found in terrestrial ecosystems (Figure 9s-1). Nitrogen is used by living organisms to produce a number of complex organic molecules like amino acids , proteins , and nucleic acids .

Explanation:

The molecules which are  involved in a Nitrogen Cycle include the following:

Nitrogen cycle is the biogeochemical cycle which involves the conversion of

nitrogen into various forms. This helps to ensure adequate availability and

distribution of the element in the soil and in the atmosphere.

The following below are processes which ensures nitrogen distribution

Read more about Nitrogen cycle here https://brainly.com/question/1380063

Answer:

The death rate is becoming higher than the birth rate.

Explanation:

Birth rate means the population increases, and death means decreases.

Answer:

The death rate becoming higher than the birth rate

Explanation:

if the death rate is becoming higher and the birth rate is getting lower then the population will die off and the birth rate would decress.

We can see here that the events that most likely happened after Stephanie dropped Harvey into Turtle Pond are:

b. Organic carbon decreased and later returned to normal.

c. Dissolved oxygen decreased and took a long time to return to normal.

e. BOD levels quickly increased and then returned to normal, but not as fast as cyanobacterial levels.

An incident refers to an event or occurrence that deviates from the normal course of operations or expected behavior. It typically involves an unplanned or disruptive incident that may have negative consequences, requiring attention or intervention to resolve or mitigate its impact.

Incidents can occur in various contexts, such as in the workplace, public settings, or everyday life.

Learn more about incident on https://brainly.com/question/13071753

#SPJ4

The Ecological Footprint calculates how quickly nature can absorb our waste and provide resources compared to how quickly humans consume resources and produce garbage.

The usage of productive surface areas is monitored via the ecological footprint.

These areas typically include: cropland, grazing land, fishing grounds, developed land, forest area, and land with high carbon demand.

The quantity of resources a person uses and the amount of garbage they generate that must be filtered out by the environment's biogeochemical cycles are examples of ecological footprints.

Therefore, dispose of industrial wastes in the ocean, a way to prevent overshoot of an industrial country's ecological footprint.

Learn more about ecological footprint here:

https://brainly.com/question/14969572

#SPJ1

To calculate the percent of plants or plant parts remaining from one life stage to the next, we can use the formula:

Using this formula, we can calculate the percent remaining for each life stage:

Flowering:

Seed Formation:

Seed Maturation:

Seedling Development:

Based on these calculations, we can see that the life stage at which the insects have the greatest impact on the life cycle of the plant is during the Seed Maturation stage. This is because the percent remaining is significantly higher in the Insecticide Spray group compared to the Water Spray group (38.7% vs. 2.5%).

The most likely interaction between the insects and the plants is that the insects play a vital role in pollinating the flowers of Haplopappus squarrosus during the Flowering stage, which leads to successful seed formation. However, certain species of insects also feed on the plants during the Seed Maturation stage, causing a significant decrease in the percent remaining. This suggests that these insects are likely herbivores, consuming the plant's resources and potentially impacting its reproductive success and overall survival.

Learn More About Maturation at https://brainly.com/question/30875810

#SPJ11

Given that Eric is hanging a rectangle mirror that has a diagonal of 47 inches with an angle of depression of 60°. We are supposed to calculate the area of the mirror.

Let's draw the diagram for this question:From the diagram we can see that the given rectangle is being divided into two right \(triangles\). And the given angle is the angle of depression which can be written as the angle of elevation of the person who is standing on the ground. The diagonal of the rectangle can be calculated as follows: If we consider a right triangle, one leg of the triangle is the length of the rectangle and the other leg is the width of the rectangle. And the diagonal of the rectangle is the hypotenuse of the right triangle using Pythagoras theorem we get:

Width2 + Length2 = Diagonal2Length2 = Diagonal2 - Width2Length = √(47² - 36²)Length = √(2209 - 1296)Length = √913Length = 30.19 inches Let's calculate the height of the rectangle: If we consider the right triangle with the angle of 60 degrees, the opposite side to the angle of 60 degrees is the height of the rectangle. And we have hypotenuse and we can use trigonometry formula to find the height.Height = Hypotenuse * sin(60)Height = 47 * sin(60)Height = 47 * 0.866Height = 40.75 inchesNow, we can calculate the area of the rectangle using the following formula: Area = length * widthArea = 30.19 * 40.75Area = 1231.2425 inches^2

To know more about mirror visit:

https://brainly.com/question/1160148

#SPJ11

AAA (codes for the amino acid lysine, Lys) being mutated to AAG (which also codes for Lys) are some silent point of mutations.

One of the three forms of substitution mutations (also known as point mutations), along with nonsense and missense, is a silent mutation. A silent mutation specifically happens when a change in a gene's DNA sequence has no impact on the subsequent amino acid sequence of the protein it codes for. Since both of those codons translate to the same amino acid, Ser, or serine, there is no actual change in the protein produced by this gene if the DNA sequence changes from AGC to AGA, for instance. However, the matching RNA would change from UCG to UCU. Because it has no immediate impact, the mutation is said to be "silent." The quiet mutation is one of the various point mutation kinds, which are all displayed below.

Learn more about mutation here: https://brainly.com/question/17031191

#SPJ4

Stickleback fish can travel between the lake and the ocean via seasonal canals in the area of the ocean close to the lake where they are also found. All options are correct.

When scientists compared ocean sticklebacks, they discovered that 64 of the ocean fish lacked spines whereas 440 had them.

A. How frequently this population carries recessive alleles (q)

B. How often this population's dominant alleles occur (p)

C. The population's proportion of heterozygous individuals:

D. Describe the cause of the recessive trait's widespread manifestation in fish.

Due to recessive inheritance, a disease can only be caused by a pair of faulty genes.

Carriers are individuals who have just one faulty gene out of the pair. Most frequently, the disease has no effect on these individuals. They can, however, pass on the faulty gene to their offspring.

For more information on recessive trait kindly visit to https://brainly.com/question/17447924

#SPJ4

An electrocardiogram (ECG or EKG) records the electrical changes that occur during the heartbeat and provides data on the health of the heart.

ECG is an abbreviation for electrocardiogram and it can be defined as an instrument which is designed and developed for the measurement of the electrical changes and cardiorespiratory fitness of an individual at rest.

In this context, we can infer and logically deduce that an electrocardiogram (ECG or EKG) is an instrument which is designed and developed to record the electrical changes that occur during the heartbeat, and it provides data on the health of the heart.

Additionally, an electrocardiogram (ECG or EKG) will show no P waves with a heart rate (HR) between 40-60 beat per minute (bpm) when the SA node is not functioning properly.

Read more on electrocardiogram here: https://brainly.com/question/11431788

#SPJ1

Answer: B. out of the shell

Explanation:

hope it helps:)

Answer:

Plant transport systems move energy from leaves and raw materials from roots to all their parts. The xylem (tissue) moves water and minerals obtained from the soil to all other parts of the plants.

Explanation:

I hope I helped:)

Answer:

earthquakes

Explanation:

Answer:

earthquakes

Explanation:

because it is muddy