Which list of elements is placed in order from most reactive to least reactive?
A. F, O, N, Ne
B. N, O, Ne, F
C. Ne, F, ON
D. N, Ne, O, F

Answers

Answer 1

A is the answer

The two reactive elements that you should remember are Flourine (F) and Francium (Fr), and only F is first for one answer.


Related Questions

Name the two principles of Mendelian genetics: Principle of ______ and Principle of ______.

Answers

the principle of segregation

the principle of independent assortment

5 Which situation would be most likely to cause a DNA mutation? O A A wood frog in a lake is exposed to temperatures below 0°C during the wi OB. A person spends one hour each day under the ultraviolet rays of a tanning OC. A maple tree becomes dormant to prevent water loss during a drought. OD. A culture of cells is placed in a chamber and exposed to high pressure for Reset Nex​

Answers

Answer:

B. A person spends one hour each day under the ultraviolet rays of a tanning bed.

Explanation:

Genomics refers to the scientific study of genes (DNA) found in living organisms such as humans and animals.

A genome can be defined as the complete set of hereditary instructions that is typically found in the deoxyribonucleic acid (DNA).

Deoxyribonucleic acid (DNA) is an organic complex-molecular structure found in all living organisms.

Basically, it comprises of genes and is essentially the foundation block of all living organisms such as humans, animals and plants.

Mutation can be defined as an alteration in the DNA sequence (nucleotide sequence) of a cell of a living organism either due to improper transcription, genome editing or environmental factors such as smoking, ultraviolet (UV) light, etc.

Hence, when a person spends one hour each day under the ultraviolet rays of a tanning bed, it's most likely to cause a DNA mutation. A continuous exposure to ultraviolet (UV) light would cause an uncontrolled division of certain body cells, which then invade the surronding tissues and interfere with the normal functioning of the body.

PLEASE HELP ASAP LOL 50 POINTS

Answers

Answer:

I think it 50 answer

I think it is the answer

Which is most likely an example of pseudoscience?


A doctor’s study shows that insulin released constantly in the body regulated blood sugar better than injected insulin.

An experiment concludes that two populations of squirrels look similar but are not closely related.

Data shows that dogs live longer by using a certain brand of dog food.

Most people believe that drinking milk can soothe heartburn.

Answers

Answer:

Most people believe that drinking milk can soothe heartburn.

Explanation:

Pseudoscience refers to practices and beliefs that are believed to be scientific but in actuality, do not follow any known scientific method. Even after it has been logically proven that these practices have no scientific backing people continue to believe in them because through confirmation bias, they believe that they work.

True science is evidence and research-based. Pseudoscience as seen in the last option is just based on belief.

Answer:

Most people believe that drinking milk can soothe heartburn.

Explanation:

A diagram illustrates that grass is eaten by insects, birds, and mice. The insects are eaten by hawks, snakes, and toads. The birds and mice are eaten by foxes, hawks, and snakes. The toad is also eaten by the snake. Which best describes the diagram?
pyramid
food chain grid
food web
trophic level

Answers

Answer:

Food web

Explanation:

food web:

a system of interlocking and interdependent food chains.

Answer:

food web

Explanation:

food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains.

What are the causes of wildfires?

Answers

Answer:

Humans and Wildfire

Human-caused fires result from campfires left unattended, the burning of debris, equipment use and malfunctions, negligently discarded cigarettes, and intentional acts of arson. Lightning is one of the two natural causes of fires.

Hope it's help

Correct me if I'm wrong

Explanation:

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What causes a wildfire?
Common causes of wildfires include lightning, human carelessness, arson, volcano eruption, and pyroclastic cloud from active volcano. Heat waves, droughts, and cyclical climate changes such as El Niño can also have a dramatic effect on the risk of wildfires. Although, more than four out of every five wildfires are caused by people.

A particular enzyme will usually interact with... *

Answers

It’s corresponding molecule that or bonds to. I think it is a substrate.

According to the principle of maximum parsimony,
A. phylogenies based in DNA require the most base changes.
B. the preferred tree is the one that minimizes the amount of evolutionary change.
C. a large number of trees should be examined.
D. in the case of trees based on morphology, a parsimonious tree requires the most changes.

Answers

Answer:

The correct answer is B. the preferred tree is the one that minimizes the amount of evolutionary change.

Explanation:

The principle of maximum parsimony selects the cladogram or phylogenetic tree that explains the phylogeny that has the minimum number of evolutionary changes. It is based on the principle known as Occam's Razor (Occam’s razor) formulated by William Ockham in the 14th century. This principle refers to a type of reasoning based on a very simple premise: other things being equal, the simplest solution is probably the correct one. This is because the simplest solution requires the least number of assumptions and logical operations. The basic premise in Parsimony is that taxa that share a characteristic (similarity) do so because they inherited that characteristic from a common ancestor, homology.

What is one of the reasons why Gregor Mendel chose to study pew plants

Answers

answer: to study genetics

Which of the following objects could be used to model the structure of a DNA molecule?
A. a snowflake
B. a ladder
c. a three-dimensional cube
D. a branching tree

Answers

Answer:

Ladder

Explanation:

The structure of the double helix is often described as being like a ladder that has been twisted into a spiral shape. Therefore, option (B) is correct.

What is the structure of DNA?

DNA (deoxyribonucleic acid) is a long, linear polymer that is made up of repeating units called nucleotides. Each nucleotide consists of a sugar (deoxyribose), a phosphate group, and one of four nitrogenous bases: adenine (A), guanine (G), cytosine (C), or thymine (T). The sequence of these nitrogenous bases determines the genetic information encoded in DNA.

One of the most common models for the structure of DNA is the "double helix" model, which was proposed by James Watson and Francis Crick in 1953. This model depicts DNA as a double-stranded helix that is held together by hydrogen bonds between the complementary nitrogenous bases A and T, and G and C. The two strands of the helix are antiparallel, meaning that they run in opposite directions. The structure of the double helix is often described as being like a ladder that has been twisted into a spiral shape.

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Where can Alveoli be found? A. In the cell membrane. B. In the hypothalamus. C. In the liver. D. In the lungs.​

Answers

The answer is D. In the lungs

descirbe your house to your classmate who plans to attend your birthday party​

Answers

Answer:

3 bedrooms 4 bathrooms

Explanation:

Why is a female skeleton smaller, and not as wide a male skeleton?
Can someone please explain?

Answers

Answer:

A male's skeleton is usually thicker, rougher and appears more bumpy. ○ Due to the fact that males have larger muscles and therefore their skeletons require stronger attachment sites. Women who have borne children have scars on the surface of their pelvis. The femur (thigh bone) of a male is thicker than a females.

Which feature of Earth is part of the geosphere?
O air
O fish
O rocks
Oglaciers
HELP ME PLEASEEEEE

Answers

Answer:

Rocks

Explanation:

Geo means “earth.” The Earth’s geosphere (sometimes called the lithosphere) is the part of the Earth that includes all the rocks, minerals and landforms of the surface and interior that make up the Earth. It starts at the ground and extends all the way down to Earth’s core.

The feature of the Earth that is part of the geosphere is rocks. The correct option is C.

What is the geosphere?

The geosphere is made up of every rock on Earth, from the melting rock beneath the crust to the massive, age-old mountains to the sand grains on the seashore.

The biosphere, a global ecosystem that includes all life on Earth, has a home in both the geosphere and the hydrosphere and lithosphere, etc. Organisms live in both, the geosphere and the hydrosphere.

The geosphere is always moving because the tectonic plates are always moving, and they sometimes collided with each other. The formation of new landmass, volcano eruptions, lava, molten magma, plants and other things, earthquakes, etc. all happened in the geosphere.

Thus, the correct option is C. rocks.

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The products of cellular respiration are

Answers

Answer:

ATP, carbon dioxide, and water.

Explanation:

ATP, carbon dioxide, and water are all products of this process because they are what is created.

explain the four weed control methods. give at least 2 examples that you practice. 2 example in each control method.. plzz ans this question​

Answers

Answer:

Cultural Weed Control, Mechanical Weed Control, Biological Weed Control and Chemical Weed Control.

Explanation:

Cultural Weed Control, Mechanical Weed Control, Biological Weed Control and Chemical Weed Control are the four methods used for weed controls.  Pulling and digging are the two examples of Mechanical weed control while on the other hand, herbicides such as Metribuzin and 2,4-dichlorophenoxyacetic acid (2,4-D) are the two examples of Chemical Weed Control. Herbicide is the most effective and quick method used for weed control.

Does a virus have an independent lifecycle?

Answers

The virus life cycle could be divided into six steps: attachment, penetration, uncoating, gene expression and replication, assembly, and release.

Hydra is called a diploblastic animal .Why? ​

Answers

Hydra has two main body layers, which makes it "diploblastic". The layers are separated by mesoglea, a gel-like substance. ... The cells making up these two body layers are relatively simple.

What process is described in the situation above? a. respiration c. feedback inhibition b. circulation d. cellular activity

Answers

Question isn't complete but explanation will be given for each option

Answer and Explanation:

A. Respiration: respiration occurs when organisms take in oxygen, combine it with glucose to release carbon dioxide, water and ATP. Respiration is different from breathing since it is more of a biochemical process than physical process.

B. Feedback inhibition: feedback inhibition occurs in metabolism when an the end product of an enzyme inhibits further production of end products by the enzyme in order to reduce concentration and reduce waste that occurs when more is produced than needed by cells.

C. Circulation: circulation involves the heart, arteries and veins whereby the heart pumps blood( which carries oxygen,hormones and nutrients) and the arteries move them in circulation through the body and back to the heart through the veins, giving off waste products.

D. Cellular activity: cells are the most basic form of life known. Cellular activities are basically the activities of cells in an organism. Examples of cellular activities include: work of enzymes in digestion, cell division, synthesis of protein from amino acids etc.

Answer: C

Explanation:

Just did the quiz

What did Darwin discover about plants from his phototropism experiments?

Answers

Answer:

https://www.biology-pages.info/T/Tropisms.html

Explanation:

This link holds all the information you need :D

*HELP ASAP
Depletion of nonrenewable resources is often a result of:

1)environmental laws

2)human population growth

3)reforestation

4)recycling

Answers

Answer:

Depletion of nonrenewable resources is often a result of reforestation.

Answer:

2 -- Human Population Growth

Explanation:

The rest have no effect on nonrenewable resources because they are renewable, or replenishable.  The more humans expand, they more resources they need such as gas, coal, and oil. Due to the fact that resources such as those listed before can't be renewed, or replenished, it causes a loss in those resources (depletion).

Un laboratorio que produce una fórmula para matar piojos recibió muchas quejas de parte de sus
clientes debido a que la efectividad del producto fue disminuyendo con el tiempo. Debido a esto
decidió cambiar la fórmula y el nuevo producto es capaz de eliminar el 100% de los piojos. ¿Cómo
explicarías que el primer piojicida fue perdiendo efecto con el tiempo? ¿Te parece que el nuevo
piojicida va a evitar recibir quejas luego de pasado un tiempo? ¿Por qué?

Answers

Answer:

Es probable que a través del tiempo la población de piojos también se vuelva resistente al segundo pijojicida. Los piojos resistentes se generan por un proceso de selección natural  

Explanation:

La evolución es el proceso mediante el cual los organismos cambian (evolucionan) con el tiempo con el fin de adaptarse a sus condiciones ambientales. La selección natural opera seleccionando aquellos individuos mejor adaptados al ambiente en el cual cada individuo se desarrolla. Los individuos adaptativamente superiores poseen más chances de sobrevivir y de reproducirse, trasmitiendo de este modo sus genes a la descendencia. Las mutaciones representan la fuente principal de variabilidad genética en la forma de nuevos alelos y genes. Las mutaciones que son beneficiosas y confieren una ventaja adaptativa son seleccionadas por selección natural. En este caso, la resistencia al primer piojicida se debió a la aparición de una o más mutaciones las cuales confirieron resistencia al primer compuesto. Con el tiempo, la frecuencia de los individuos portadores de mutaciones beneficiosas en la población de piojos fue incrementándose paulatinamente (como resultado del proceso de selección natural). Es muy probable que este proceso evolutivo también se repita con el segundo piojicida.

Explain how is sunlight distributed across the world

Answers

Answer:

The sun is distibuted across the world due to The environment works in a similar way to a car's heat engine. Winds, precipitation, and evaporation processes in the atmosphere, on the other hand, spread the sun's energy across the Earth. Conduction, convection, and radiation are the methods through which heat energy is transferred.

Explanation:

I took earth science

On Earth, sunlight is scattered and filtered through Earth's atmosphere, and is obvious as daylight when the Sun is above the horizon. When direct solar radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat.

How many meters does sunlight reach down into the ocean?

Answers

Mark Brainliest please

Answer 1000 meters


Light may be detected as far as 1,000 meters down in the ocean, but there is rarely any significant light beyond 200 meters.

Sunlight entering the water may travel about 1,000 meters (3,280 feet) into the ocean under the right conditions, but there is rarely any significant light beyond 200 meters (656 feet).

The ocean is divided into three zones based on depth and light level. The upper 200 meters (656 feet) of the ocean is called the euphotic, or "sunlight," zone. This zone contains the vast majority of commercial fisheries and is home to many protected marine mammals and sea turtles.

Only a small amount of light penetrates beyond this depth.

The zone between 200 meters (656 feet) and 1,000 meters (3,280 feet) is usually referred to as the “twilight” zone, but is officially the dysphotic zone. In this zone, the intensity of light rapidly dissipates as depth increases. Such a minuscule amount of light penetrates beyond a depth of 200 meters that photosynthesis is no longer possible.

The aphotic, or “midnight,” zone exists in depths below 1,000 meters (3,280 feet). Sunlight does not penetrate to these depths and the zone is bathed in darkness.

‘Photic’ is a derivative of ‘photon,’ the word for a particle of light.

Sunlight entering the water may travel about 1,000 meters (3,280 feet) into the ocean under the right conditions, but there is rarely any significant light beyond 200 meters (656 feet). The ocean is divided into three zones based on depth and light level.

Under the appropriate circumstances, sunlight entering the sea can penetrate around 1,000 meters into the ocean, although there is rarely much light beyond 200 meters.

The euphotic zone can stretch down to a depth of 80 meters (m) in crystal-clear tropical waters. The euphotic zone may be less than 10 m deep in places close to the poles since sunlight does not penetrate there as deeply. The euphotic zone may only be a few centimeters deep in murky, turbid water.

Light can only go so far below the ocean's surface due to the ocean's extreme depth. The water molecules scatter and absorb the light energy as it passes through them. Light is so dispersed at great depths that nothing is left to be detected.

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Which statement is true about the Earth’s oceans?

Answers

Answer:

They are all getting larger due to the movement of tectonic plates statement is true about the Earth’s oceans.

Answer:

Select the statement that describes this expression: 10 + one fourth x (5 + 3) – 3.

Explanation:

Healthy biodiversity provides
A. Protection of water resources
B. soils formation and protection
C. Nutrient storage and recycling
D. all of the above

Answers

The answer is d, All of the above
D

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Jasmine and Marcus are at the park, and Jasmine makes the following statements. Which of them is an inference?

Answers

the plant is producing oxygen

Answer:the plant is producing oxygen so c

Explanation:

what havoc would be caused if a horse was suddenly at the top of the food chain

Answers

that would be.... immensely chaotic

Which of the following scientists DID NOT disprove spontaneous generation? *
Pasteur
Hooke
Redi
Spallanzani

Answers

Hooke didnt disprove spontaneous generations!

A farmer tested the soil in a field and found that there was a high nitrate salt concentration. The farmer then grew a crop in this field. After the crop was removed, the soil was tested again. The nitrate salt concentration had decreased.

Answers

Answer:

The crops has extracted the nitrates from the soil

Explanation:

Complete question

Why?

Solution

The crops has extracted the nitrates from the soil for its nourishment and metabolic requirement. Hence, the concentration of nitrate after the crop cultivation has reduced as compared to the concentration of nitrate prior to the crop cultivation.

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