Which of these elements is the least reactive?
a.
sodium

b.
krypton

c.
chlorine

d.
aluminum

Answers

Answer 1
B krypton it’s a noble gas

Related Questions

Recently, oil from a wrecked tanker resulted in a disaster in ecosystems containing many unique species. The potential loss of these species could result in:.

Answers

The potential loss of these species could result in a decrease in organisms available for scientific research.

What is biodiversity?

Biodiversity refers to all genetic and phenotypic diversity present in a giver region and/or ecosystem.

Loss of biodiversity is a problem that may seriously affect and hamper any type of scientific investigation.

In conclusion, the potential loss of these species could result in a decrease in organisms available for scientific research.

Learn more about biodiversity here:

https://brainly.com/question/11542363

#SPJ1

4. Nearly 75% of the Tanzanian population lives on less than $2 a day. Is it ethical to spend so
much money on conservation when there are human needs not being met? Explain your thinking.

Answers

Answer: Yes and no

Explanation: A big thing to take into account is the cost of living in Tanzania, it is way lower than what it is in the United States and as such you can get by, with making way less. However, The quality of live is still way lower in Tanzania. You can tackle both issues if you are are able to provide jobs that are much more high income that also aren't harmful for the local enviorment.

Why do you think bright feathers make a male duck a desirable mate?

Answers

In competition, males use feather color to warn potential rivals that they occupy a piece of territory.

a cheetah travels 20km west in an hour. The cheetah stops for another hour. Then the cheetah travels another 40km in two hours. What is the velocity of the cheetah

Answers

Answer:

The velocity of the cheetah is 15km per hour

Explanation:

First, you add the kilometers that the cheetah travels. Then you should get 60km. Then you put the distance the cheetah travels in a ratio to the hours it took for it to reach its point.

60:4

After that you simplify the ratio which should end up with the final ratio being:

15:1

✅The ratio means 15km each hour which is a rate that can be used in velocity. You can convert it further if you needed it to but I hope it helped you!

the area where an orginsim lives its life including the living and non living factors

Answers

Answer:

A Habitat

Explanation:

Because an area where an orginsim lives its life including the living and non living factors is a Habitat

Which of the following describes fossils?

Answers

What are the options to choose from?

i'll give brainliest! plss help.
Relying on the knowledge that you have gained from the lessons, explain what types of waste we must remove from our bodies. Why is waste removal required for all organisms?

Answers

Answer: Excretion is the removal from the body of waste products which result from normal life processes. Waste products such as carbon dioxide must be removed. If they are allowed to accumulate they cause poisoning which slows down vital chemical reactions.

Explanation:

What are the advantages of planting many kinds of trees?

Answers

Answer:

trees give oxygen to humans and animals Wich they need to breath in order to survive, by planting many kinds of trees the rare and the species that are going extinct can be preserved and trees also protect the land from salinity and soil degradation, they also protect the land from floods.

Gas Exchange and Transport Oxygen and carbon dioxide are exchanged across the walls of alveoli and capillaries. Chemical properties of blood and red blood cells allow for efficient transport of gases throughout the body.Carbon dioxide and oxygen are exchanged across capillary and alveolus walls.Hemoglobin binds with and transports oxygen that diffuses from alveoli to capillaries. It also increases the efficiency of gas exchange.Carbon dioxide is transported in the blood in three ways. Most combines with water and forms carbonic acid. Some dissolves in plasma. Some binds to hemoglobin and proteins in plasma.
For Questions 2-7, complete each statement by writing the correct word or words.
6. ___________ binds with oxygen and increases the blood's oxygen-carrying capacity.

Answers

Answer:

Hemoglobin is a protein found in red blood cells that is comprised of two alpha and two beta subunits that surround an iron-containing heme group. Oxygen readily binds this heme group. The ability of oxygen to bind increases as more oxygen molecules are bound to heme.

What effect might obesity have on blood pressure? Does obesity alone cause a person to be at risk for high blood pressure? What other factors, in combination with obesity, might increase a person’s risk for high blood pressure?

Answers

Answer:

obesity increases blood pressure

Explanation:

This is because the high fat percentage in the body has lead to a build up of fat on the inside of arteries and this makes them thinner. the heart has to pump harder to get the blood around the body and through these, now smaller arteries. therefore yes having diabetes does increase blood pressure.

other factors which increase blood pressure are high stress levels, smoking, anxiety.

You are studying the genes of fruit flies. Your partner claims
that each gene matches to a specific body part, such as the head, wings, and tail. How
a
would you argue for or against this claim?

Answers

This concept about genetics is wrong because major phenotypic traits are in general quantitative.

What is a quantitative trait?

A quantitative trait is a phenotypic feature governed by the interaction between genes and the environment.

Quantitative traits involve the expression of many genes to shape a given phenotypic characteristic (e.g., head).

In conclusion, this concept about genetics is wrong because major phenotypic traits are in general quantitative.

Learn more about quantitative traits here:

https://brainly.com/question/88535

#SPJ1

What are some of the differences between crime scene investigations on TV and those that occur in real life? What are some of the similarities?

Answers

Answer:

People, not machines, perform fingerprinting. They do search for a particular amount of matches before taking into account a whole match.

Explanation:

Supplemental appendix is to a book as a ____________ is to a bacterial chromosome. genetically modified organism plasmid restriction enzyme bacterium

Answers

A supplemental appendix is to a book as a plasmid is to a bacterial chromosome.

What do you mean by Chromosomes?

Chromosomes may be defined as a structure that is present inside the nucleus and carries genetic information about organisms.

Plasmids enhance the survival of bacterial organisms by assisting them with toxins production that kills other infectious organisms like viruses.

Therefore, a supplemental appendix is to a book as a plasmid is to a bacterial chromosome.

To learn more about Chromosomes, refer to the link:

https://brainly.com/question/953045

#SPJ1

A dog uses pheromones to ​

Answers

Answer:

D.  Mark its territory.

Explanation:

As a dog patrols its territory urinates.  Male dogs in particular will urinate frequently, leaving pheromone-rich urine on objects to let other dogs know that the territory belongs to them.

A CU graduate student studies the evolutionary drivers of choice in migration in one herbivore species that migrates between the Kalahari Desert and the Okavango Delta. We could consider the graduate student a/n:

Answers

Answer:

A behavioral ecologist is a person who studies the effects of behavior on the environment The impact of behavioral ecology is studied by behavioral ecologists.

what happens to the ground particles when they are hit by sunlight?

Answers

Answer:

The Earth absorbs most of the energy reaching its surface, a small fraction is reflected. In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth's surface while around 30% is reflected back to space and does not heat the surface.

Explanation:

Hope It Works

Both dN/dt and r are types of growth rates. what are the differences between them?

Answers

Both dN/dt and r are types of growth rates. the differences between them are that one means real growth rate and another instantaneous rate

What is dN DT?

dN/dt = real population growth rate at any time; r = instantaneous (intrinsic) growth rate

With this information, we can conclude that Both dN/dt and r are types of growth rates. the differences between them are that one means real growth rate and another instantaneous rate

Learn more about growth rates in brainly.com/question/13870574

#SPJ1

Which do you think is a more- basic characteristic for classifying organisms?

(a) the place where they live.
(b) the kind of cells they are made of. Why?​

Answers

Answer:

Classification based on living place is more basic as there can be wide variations in organisms living in a given place.

Answer:

Classification based on living place is more basic as there can be wide variations in organisms living in a given place.

Explain how the shape and stacking of the thylakoids contributes to the rate of carbon fixation by the chloroplast.

Answers

Chloroplast is the cell organelle that is associated with photosynthesis as it has chlorophyll. When stacked, each thylakoid increases its total surface area, allowing for more electron transport chains to be embedded in each thylakoid membrane.

What is thylakoid?

Inside chloroplasts, thylakoids are membrane-bound compartments which are the site of photosynthesis's light-dependent reactions.

Thylakoids are made up of a thylakoid membrane that surrounds a thylakoid lumen. Its main function is to allow the light reactions of photosynthesis.

When the thylakoids are stacked, each of them is able to increase their total surface area which leads to more electron transport chains being embedded into each thylakoid membrane.

Thus, it can be concluded that the shape and stacking of the thylakoids contributes to the rate of carbon fixation by the chloroplast by allowing more electron transport chain.

For more details regarding chloroplast, visit:

https://brainly.com/question/11136550

#SPJ2

What is the maximum sustainable yield for a resource?

Answers

Answer:

its the maximum amount that can be taken without depleting the resource or population over the long-term.

Explanation:

the highest possible annual catch that can be sustained over time, by keeping the stock at the level producing maximum growth

How would an increase in the number of birds affect the number of mice


Answers

Birds and mice compete for the same food. If the number of birds increases by a lot, there will be less seed for the mice to feed on. The mice will compete for the remaining seeds and fewer mice will survive this would lead to the number of mice decreasing.

Two species of marine organisms share the same habitat. organisms from one species attach themselves to the other species and use them to move around in the water. what form of ecological relationship is this?
a. inquilinism
b. phoresy
c. metabiosis
d. ectoparasitism

Answers

Phoresy is the name of the symbiotic ecological relationship where one organism attach to the other (Option B).

What is Phoresy?

Phoresy is an ecological relationship where a given biological organism travels on the body of another organism.

The life forms in this type of ecological symbiotic relationship (phoresy) are not parasitic type.

In conclusion, phoresy is the name of the form of symbiotic ecological relationship above described.

Learn more about Phoresy here:

https://brainly.com/question/1050479

#SPJ1

How can exercise improve your respiratory system?.

Answers

Exercise improves your lung capacity. Exercise increases the blood flow to your lungs, allowing the lungs to deliver more oxygen into the blood.

Why is the ventricle of the frogs heart thicker and more muscular than the Atria

Answers

Answer: The thick muscular wall of the left ventricle ensures that it develops a higher pressure during contraction in order to force blood through the body

biological process
dna y mrna z protien

Answers

Here, the letter "Y" refers to transcription, while the letter "Z" refers to translation.

What do you mean by Transcription?

Transcription may be defined as a biological process through which a cell makes a copy of RNA (mRNA) from a segment of DNA. It occurs in the nucleus of the cell.

Translation may be defined as a biological process through which a cell makes proteins with the help of genetic information carried by mRNA. It occurs in the cytoplasm of the cell.

Therefore, here, the letter "Y" refers to transcription, while the letter "Z" refers to translation.

To learn more about Transcription, refer to the link:

https://brainly.com/question/1048150

#SPJ1

Which type of limiting factors does the seasonal drought in the Serengeti plains affect? density-independent factors density-dependent factors population-dependent factors population-independent factors

Answers

Answer:

Population dependant factors

Explanation:

The main factor behind the seasonal drought is lack of water or rainAs per the propulation increases the requirements of water also increases.Which creates scarcity of water .It also tends to seasonal droughts

Answer:

population-dependent factors

Explanation:

The type of limiting factors the seasonal drought in the Serengeti Plains which are affected by the seasonal drought is population-density factors.

The drought affects the population who face survival with a lack of water, and depending on the number of people within the population, it raises questions whether the scarce availability of water is enough.

Blood pressure decreases with distance from the left ventricle of the heart

Answers

Blood pressure decreases with the distance from left ventricle of heart as the decrease in the diastolic pressure is greater than increase in systolic pressure.

What is diastolic pressure?

Diastolic pressure is the pressure exerted in the arteries as the heart rest between the beats.

The decrease in a diastolic pressure is greater than the increase in systolic pressure. This results in an increase of the pulse pressure gradually.

As a result of this, arterial blood pressure decreases in the systemic arteries as the distance from the heart increases.

Thus, blood pressure decreases with distance from the left ventricle of the heart.

For more details regarding heart, visit:

https://brainly.com/question/16566688

#SPJ4

Choose one type of water pollution. How did the pollution happen? What negative effects does it have on the environment? What is one solution to it?

Answers

Oil spill or a discharge from pipe from a factory or sewage system. Since this is a single point of origin water pollution, this type of water pollution furnish itself to relatively easy remediation.

What is point source water pollution?

Point-source water pollution is the one type of water pollution which is easy to recognize because it generates from a single source or event and affects a specific area.

The negative effects of single point origin is deteriorating water quality which damage the environment, health conditions.

Destruction of biodiversity is another negative effect of water pollution depletes aquatic ecosystems and prompt unbridled proliferation of phytoplankton in lakes called as eutrophication.

The solution to reduce water pollution is reduce carbon dioxide emissions to prevent global warming and acidification of the oceans. Another is to reduce the use of chemical pesticides and nutrients on crops.

For more detail regarding Water pollution, visit:

https://brainly.in/question/5833349

#SPJ1

A person who is subjected to noise pollution over a prolonged period may suffer from _____.

stress

asthma

cancer

infections

Answers

Answer:

A person who is subjected to noise pollution over a prolonged period may suffer from cancer.

a person who is subjected to noise pollution over a prolonged period may suffer from CANCER

The number of hours of daylight changes throughout the year, what other factor contributes to earth's seasons

Answers

Answer:

Angle of the sun's radiation

Explanation:

Other Questions
A store buys 17 sweaters for $204 and sells them for $646. how much profit does the store make per sweater? Os golfinhos visam economia de energia durante a viagem.De acordo com o contexto, qual o sentido/significado do verbo visar nesse trecho?a.pretender.b.ver.c.obedecer.d.preparar.e.economizar. What are some of the solutions nasa and other agencies have devised to try to clean up our trash in space?. a number that has four identical evenfactors. Each factor must be greater than 1 andcan have only 1 and itself as factors. When resolving a customer's issue, you should sound conclusive." All of the following are examples of South Asias diversity except A) India has 15 official languages - 2 out of 5 people speak Hindi B) The religions of the area include Buddhism, Christianity, Hinduism, Islam, and more. C) All of South Asia has a mountainous landscape. D) The ethnic groups that live in this region include Pashtuns, Bengali, Sinhalese, and Punjabis. Determine whether this passage is more likely from a speech or a written text, and how can you tell? Conduct online research and write a short report on the origin and evolution of the meter as a measurement standard. Discuss how the meter formed a base for the development of other measuring standards. What was Oppenheimer saying about the atomic bomb in this passage?that it was a terrible weapon that would change the worldthat it was more powerful than expectedthat he feared he would be killed in the bombs blastWe knew the world would not be the same. A few people laughed, a few people cried, most people were silent. I remembered the line from the Hindu scripture . . . I am become Death, the destroyer of worlds. I suppose we all thought that one way or another.Robert Oppenheimer Hello I think this is a good answer Which of the following systems is dependent?x y = 2 and x y = 2x y = 2 and 2x 2y = 4x y = 2 and 3x 3y = 2x y = 2 and x y = 2 Kami is in charge of creating a five-digit code to lock and unlock a secure chamber. She can use any digit from 0 through 9, and she can use each digit as many times as she wants. She knows she wants to start the code with an even number.How many possible codes that start with an even number could Kami create?40,000 codes50,000 codes400,000 codes500,000 codes factor 8x^3y + 38x^2y - 10xy Which graph shows only corresponding x-values and y-values where the value of y is 2 more than the product of x and 0.5? In which star wars film was the plot about finding luke skywalker?. Scientists in the laboratory create a uniform electric field e = 6. 0105 k^v/m in a region of space where b =0 Find the volume and surface area of the figure below. When my parents see my new haircut, there probably going to flip out!whats the one error Select the best answer for the question9. Which personality trait allows you to admit your mistakes and accept feedback from others?O A. AngerO B. WillfulnessO C. PrideO D. Humility Brittany graphs the point (6,3) on a coordinate grid. Which describes where sheshould plot the point if she starts at the origin?