6. Air sacs in the lungs through which oxy-
gen
and carbon dioxide diffuse into and
out of the blood are the​

Answers

Answer 1

Answer: Alveoli

Explanation: Alveoli is the air sacs in the lungs through which oxygen and carbon dioxide diffuse into and out of the blood.


Related Questions

Location plays a role in wetland type, but is not the sole determining factor. Please select the best answer from the choices provided T F.

Answers

The statement location plays a role in wetland type but is not the sole determining factor is true.

What do you mean by Wetland?

Wetlands are areas where water covers the soil or is present either at or near the surface of the soil all year or for varying periods of time during the year, including during the growing season.

The characteristics of the fate line depend on the location primarily on its latitude and longitude. The direction and movement of the sun also affect the wetland types.

Therefore, The statement location plays a role in wetland type but is not the sole determining factor is true.

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Answer:

True!

Explanation:

Which statement is NOT true about the role of glucose?
1.it is produced during photosynthesis
2.it it s food source for the plant
3.it is a waste product of photosynthesis
4.it is converted into ATP

Answers

Answer:

The statement "It is a waste of product of photosynthesis" is incorrect about the role of glucose.

two characteristics of arteries and veins.​
If anbody answer it will make them brainlist

Answers

Featured snippet from the web
Located throughout the body, arteries transport nutrient-rich, oxygenated blood to organs and tissues. Arteries are more muscular and have smaller, rounder lumens (internal spaces) than veins. The artery lumen has a wavy endothelium, or inner lining, due to the configuration of elastic tissue beneath it.
The arteries carry oxygenated blood to all body parts, where as veins carry the deoxygenated blood to the heart.

ASAP Choose ALL that apply for neap tides

Lesson 3. 01

Moon, Sun, and Earth are in alignment

Moon and Sun are at right angles to the Earth

Gravity of the Sun and Moon work against each other

Smaller than normal range of high and low tides.

Answers

Answer:

moon, sun, and earth are in alignment

What typically happens to the physiological symptoms of a panic attack when an individual goes through the fear of fear cycle of panic?.

Answers

The symptoms get worse due to positive feedback (i.e., the fear cycles generate more fear). It increases the first stimulus.

What is positive feedback?

Positive feedback is a process where a given outcome stimulates the generation of a result for the first stimulus.

Positive feedback occurs during a process known as a feedback loop capable of increasing the first consequence of a stimulus.

In a process involving positive feedback, the stimulus increases the production of the first disturbance.

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Which of the following best describes invertebrates and vertebrates? Invertebrates have a backbone and vertebrates do not. Invertebrates do not have a backbone and vertebrates do. Invertebrates and vertebrates both have a backbone. Invertebrates have a backbone in the front and vertebrates have one in the back.

Answers

Answer:

Explanation:Invertebrates are animals without spines, while vertebrates have a spine. Invertebrates are sometimes (mistakenly) thought of as primitive because of their lack of developed organs. Their simple internal systems include respiratory systems such as gills or trachea and they often use an open circulatory system to pump their blood. As invertebrates lack an internal skeletal

structure, they sometimes have an external skeleton that protects their soft bodies called an “exoskeleton.” In general, invertebrate success often comes from their ability to reproduce extremely quickly, unlike many vertebrates who take years to become fully grown.

Vertebrate animals, on the other hand, have a spine that develops from a notochord they possess as an embryo. They also have defined internal systems like complex respiratory structures, a closed circulatory system and sensory organs that build the nervous system. Vertebrates tend to be larger than invertebrates, thanks to their backbone, which allows their bodies to grow larger and move faster than many invertebrates.

The statement that best describes invertebrates and vertebrates is invertebrates do not have a backbone and vertebrates have a backbone.

What do you mean by invertebrates?

Invertebrates may be defined as any animal that lacks a vertebral column, or backbone, in contrast to the cartilaginous or bony vertebrates.

Invertebrates do not possess a backbone and an internal skeleton, but they have an exoskeleton. They possess an open circulatory system. While on the other hand, vertebrates possess a backbone and an internal skeleton, but they do not possess an exoskeleton. They possess a closed circulatory system.

Therefore, the statement that best describes invertebrates and vertebrates is invertebrates do not have a backbone, and vertebrates have a backbone.

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what are the technicial terms for organisms that make their own food , and organisms that obtain food through eating other living thing ?

Answers

producers and consumers im pretty sure its been some time though

The untreated sewage discharged by cruise ships is _______. a. blackwater b. greywater c. solid waste d. not considered pollution please select the best answer from the choices provided a b c d

Answers

The untreated sewage discharged by cruise ships is Blackwater. So, the correct option is A.

What do you mean by Untreated Sewage Discharge?

Untreated sewage discharge may be defined as sewage that has not passed through a treatment system. This is the sewage that is directly discharged from a toilet into a waterway.

Blackwater refers to any waste from toilets or urinals which is directly discharged into the waterway without any treatment. It is the major cause of water pollution as well.

Therefore, the untreated sewage discharged by cruise ships is Blackwater.

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WILL MARK BRAINLIST IF CORRECT PLEASE ANSWER FAST!!!!! _______________ has lots of nutrients but does NOT allow water or air to pass through

Answers

Answer:

the skin on your body

Explanation:

because it is a tough cover it protects the body in many ways,thus it's water proof.

Nitrogen is an element found in nucleic acids. Where else is nitrogen found?

A. proteins
B. lipids
C. carbohydrates​

Answers

Answer:

A

Explanation:

nitrogen is a fundamental source of amino acids. And amino acids are building blocks of proteins

What are renewable resources?

Answers

Renewable sources is like an endless supply, for example solar energy, wind, water, geothermal, hydro, and biomass.

Answer:

Renewable resources are resources that naturally grow back the portion that is lost and more solar energy, plant materials are some examples.

Explanation:

Which of the following is NOT a structural adaptation?
camouflage
mimicry
spikes on a hedgehog
a squirrel climbing up a tree

Answers

Answer:

Camoflauge.

Explaination:

Camouflage is when a species changes to resemble its surroundings to protect itself.

Structural adaptations are physical features of an organism such as spikes on a hedgehog.

Since camoflauge is not a physical feature, it is therefore not a structural adaptation.

Hope this helps!

The outer layer of bone _____.

is a thin membrane
is thick and hard
looks like a sponge
makes red blood cells

Answers

i thought it was a thin membrane

Which of the following describes the dependent variable?

A. The group in which conditions were not changed

B. The variable that is being manipulated by the experimenter

C. The variable that is observed or measured the the experimenter

D. The observation that the experimenter made that started the experiment

Answers

Answer:

C.) The variable that is observed or measured by the experimenter.

Explanation:

The dependent variable is the variable that is being measured or tested in an experiment.

For example:
In a study looking at how tutoring impacts test scores, the dependent variable would be the participants' test scores, since that is being measured.



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Why are there so few third-level consumers and how does this fit with the energy pyramid? Group of answer choices because there is less energy available at the bottom of the pyramid because of the energy and heat loss at each level of the pyramid because they use the most energy competing for food in the pyramid because they have the fewest sources of food for energy in the pyramid

Answers

Answer:

because of the energy and heat loss at each level of the pyramid

Explanation:

Producers (photosynthetic beings) are the ones who are at the base of the food pyramid, and for this reason, they are the ones with the most energy availability. ,

When a primary consumer feeds on producers, the energy stored in organic compounds is transferred to him. Consumers then use ingested organic matter to produce energy, which, in turn, is used to carry out some processes for their survival. Another part of the substances ingested is lost in feces and urine.

When serving as food for another organism, primary consumers transfer their energy to that secondary consumer, and so on. Therefore, at each level of the pyramid, less energy is passed, and then less energy is available, the more difficult and competitive it becomes for subsequent consumers.

Stars with the greatest mass will eventually become

Answers

Answer:

Stars with the greatest mass will eventually die because the greater the mass of the star, the sooner they'll die. Lower massed stars live longer than the sun, and higher massed stars live shorter than the sun. They will become into a red giant after wards when its fuel is gone. Hope this helped!

Describe the levels of organization in the body.

Answers

Cells are the smallest living part of organisms. When groups of similar cells come together, they form tissues. Groups of tissues that work together to perform a function are called an organ. Groups of organs that work together to perform a job are called an organ system. The body is made up of multiple organ systems.

What causes smog in L.A. and in Mexico City? Describe at least factors.


Describe one change to factories and power plants intended to reduce air pollution.


Describe one change to automobiles and buses intended to reduce air pollution.


Describe one way that commuters can now reduce air pollution.



What is still a major challenge to reducing air pollution in Mexico City?

Answers

What causes smog in L.A. and in Mexico City? Describe at least factors.

The smog is trapped in the valley and cannot be carried away by wind.

Describe one change to factories and power plants intended to reduce air pollution.

Reducing toxic emissions from industrial sources, reducing emissions from vehicles and engines through new stringent emission standards and cleaner burning gasoline; and addressing indoor air pollution though voluntary programs.

Describe one change to automobiles and buses intended to reduce air pollution.

Using fuel efficient vehicles, or electric vehicles.

Describe one way that commuters can now reduce air pollution.

Choose a cleaner commute, share a ride to work or use public transportation. Combine errands and reduce trips. Walk to errands when possible. Avoid excessive idling of your automobile.

Which change would likely result from proliferation?
A. an organism's cells divide once adding mass to the organism.
B. an organism's cells multiply once adding mass to the organism.
C. an organism's cells multiply many times adding mass to the organism.
D. an organism's cells divide many times adding mass to the organism.

Answers

The change that bring about proliferation is D. an organism's cells divide many times adding mass to the organism.

Proliferation can be regarded as physiological process of cell division which happens in almost all tissues, which brings about  increase of the number of cells.

It is the reproduction as well as multiplication of similar forms, this form could be cells or morbid cysts.

Instance of this is in cell division in many times.

Therefore, option D is correct

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Answer:

C. an organism's cells multiply many times adding mass to the organism.

Explanation:

After reading, it was C.

NEED HELP!!!

A. What are the options for surviving a very cold winter?
B. What protective measures might be required to keep cells alive during periods of torpor?

Answers

Um- where is the question?-

How do you calculate wave speed? a. Divide the wave period by the wavelength. b. Divide the wavelength by the wave period. c. Divide the wave height by the wave period. d. Multiply the wavelength by the wave height. Please select the best answer from the choices provided

Answers

Answer:

B.  Divide the wavelength by the wave period

im feeling nice today so this is for anybody (execpt people who have a lot of points) i dont need it 50 50 for two people .Have a nice day!

Answers

Answer:

Your Awesome

Explanation:

Thanks lol

Answer:

Thanks!

Explanation:

Can u please mark me brainliest? Im desperate.

Have a great day!
#Equestrians

Why do cells have a maximum diameter of slightly over 100 micrometer

Answers

Cells have a maximum diameter of slightly over 100 micrometer due to chemicals or mutation.

Why cells have a maximum diameter of slightly over 100 micrometer?

Prokaryotic cells diameter ranges from 0.1 to 5.0 micrometers (μm) which are smaller than eukaryotic cells, which have diameters ranging from 10 to 100 μm.

Some cells have attain the diameter of over 100 micrometer which may be due to mutation or exposure to chemicals so we can conclude that Cells have a maximum diameter of slightly over 100 micrometer due to chemicals or mutation.

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3. Describe the variation between individuals of giant tortoises found on the
Galapagos Island, and explain why.

Answers

Lonesome George lived in the Galapagos, a chain of volcanic islands off the coast of Ecuador, in South America—islands that forever changed our understanding of the natural world. While visiting the Galapagos in 1835, British naturalist Charles Darwin observed local plants and animals. He became fascinated by species that seemed related to ones found on the mainland—but that also had many physical variations unique to different islands.
Over time, Darwin began to wonder if species from South America had reached the Galapagos and then changed as they adapted to new environments. This idea—that species could change over time—eventually led to Darwin’s theory of evolution by natural selection.

Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions.
Site 1: "Structures of the Nervous System: The Neuron"

What is the function of dendrites? (Site 1)

Answers

Answer:

The dendrites are important for receiving action potential or other stimulation in order for neurons to become activated. Dendrites are electrical signals that receive extensions of the cytoplasm. These signals come in two fundamental forms: inhibitory and excitatory.

Explanation:

just did it on Edge hope this helped :)have a great life bros

The function of dendrites is to receive signals and information from other cells. They have roots like structure.

What are dendrites?

Thin structures that emerge from the cell bodies of neurons are called dendrites. A neuron gets information from neighboring cells on its dendrite, or "tree branch." Like tree branches, dendrites branch as they advance toward their tips.

In order for neurons to become engaged, the dendrites are crucial for receiving action potentials or other types of stimulation. Electrical impulses are received via dendrites, which are cytoplasmic extensions. The two basic types of these signals are inhibitory and excitatory.

Therefore, dendrites have the ability to take in signals and data from other cells. They have structures-like roots.

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In a Punnett square for a two-factor cross, is it possible for all of the offspring to be identical?
Explain why or why not.

Answers

no because they would need to be a capital not lowercase and then that would turn out as the dominant trait i think

In a Punnett square for a two-factor cross, it is not possible for all of the offspring to be identical.

The Punnet square simply refers to a square diagram that's used for the prediction of the genotypes of a breed. The diagram is usually used by biologists in order to determine the probability of the genotype of an offspring.

For example, if there's a dominant and recessive genes represented as B and b. When they're crossed, the offsprings that are gotten will be BB, Bb, Bb, bb.

From the above, it shows that in a Punnett square for a two-factor cross, it is not possible for all of the offspring to be identical.

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In a grassland ecosystem, a prolonged drought has caused depletion in food sourſes for a species of rabbit
Which of the following conditions must be met for evolution by natural selection to occur within the rabbit
population?
Some individuals in the rabbit population must evolve traits that improve their survival chances.
Some rabbits must acquire mutations that create genetic variation within the population.
Rabbits must be capable of producing more offspring than are able to survive.
Rabbits must decrease their rate of reproduction to decrease competition for resources.

Answers

Some individuals in the rabbit population must evolve traits that improve their survival chances

In the grassland ecosystem, rabbits must be capable of producing more offspring than are able to survive, this condition must be met the evolution by natural selection to occur within the rabbit population. Thus, the correct option is C.

What is Natural selection?

Natural selection is the process through which different populations of living organisms adapt and change according to the surrounding environment. Individuals in a population are naturally variable with respect to environmental conditions, meaning that they are all different in some ways or the other. This variation in population means that some of the individuals have traits which are better suited to the environmental conditions than that of others.

Rabbits must be capable of producing more offspring than they are able to survive. This conditions must be met for the evolution by natural selection to occur within the rabbit population.

Therefore, the correct option is C.

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explain how crossing over provides evidence to support the claim that meiosis increases genetic variation

Answers

Answer:

at each chiasma, the chromosomes will break and then rejoin,trading some of their genes

Explanation:

What do each of the leaves of a four leaf clover stand for.

Answers

Answer:

The first leaf represents hope, the second stands for faith, the third is for love and the fourth leaf brings luck to the finder.

Explanation:

Prepare your own version of a leaflet on integrated pest management
rice production. Include in your leaflet how to formulate local remedies to control
some insects using some available low-cost substances and plant extract. ​

Answers

Answer:

Our experimental results show that a proper manner of an integrated pest management (IPM) cut pesticide use without any yield penalty.

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Find the measure of angle x in the figure.Note: Angles not drawn to scale.Angle x measures= Imagine what your ideal school would be like, describe it in Spanish, and draw it on a big poster. Which act required colonists to pay for the soldiers that had been sent to maintain orderA) Quartering ActB) Quebec ActC) Boston Port ActD) Stamp Act Based on the perspectives of the sociologist, Can you cite two examples of Theoretical perspectives in the society? A fossil of an ancient palm tree found in Alaska is an indication that Alaska once hadwhat kind of climate in its history?Cold winters and hot summerswarm and humid throughout the yeardry and hot throughout the yearCold winters and mild summers 1 (1 point)What is another term used to identify phospholipid bilayer?Cell envelopeCell membraneAll choices represent the phospholipid bilayer.Selectively permeable membrane Help me asp 25 points and will mark A company rented a computer for $800 a month. Five years later the treasurer calculated that if the company had purchased the computer and paid a $100 monthly maintenance charge, the company would have saved $1000. What was the purchase price of the computer? Passage A: Mountain gorillas are large mammals that weigh up to 440 pounds and when standing, reach heights ranging from four to six feet. As their name states, these animals live in forests high in the mountains in the Democratic Republic of Congo, Rwanda, and Uganda. To survive the harsh, cold temperatures of the mountain range, these gorillas have thick, dense fur to help them stay warm. However, as the human population continues to grow, humans are moving into the mountainous and forested areas. This means the gorillas keep moving further up the mountain, where weather and land conditions make it difficult to survive. As a result of human activity, the mountain gorilla is classified as critically endangered. At one point, scientists thought the species might be completely extinct by the 20th century. However, with the implementation of conservation efforts, there are now 880 mountain gorillas. Although they are still critically endangered, there is hope for this species. Passage B: In the thick mountain forests of Central and West Africa, the large and powerful mountain gorilla can be found. In the wild, mountain gorillas travel in families called troops. A troop can consist of up to 30 gorillas, including males, females, and their infants. Within the troop, the gorillas are very playful, gentle, affectionate, and protective. The uniqueness of these animals is one reason why they are classified as a critically endangered species. In the early 20th century, many people flew to Africa to hunt and collect mountain gorillas. Hundreds of mountain gorillas were taken as trophies or for personal collections. Many people who collected gorillas as trophy items wanted baby gorillas. The entire troop of gorillas would protect the baby to the point that they were all wiped out. Additionally, many people hunted gorillas for their meat. As their population became shockingly low, conservation efforts began. With conservationists' hard work and determination, populations are beginning to rise. These efforts ensure the mountain gorillas are happy and protected from harm. Select a detail in Passage B that helps explain why Passage A states that mountain gorillas are endangered because of human activities. O Atroop can consist of up to 30 gorillas, including males, females, and their intants. O In the early 20th century, many people flew to Africa to hunt and collect mountain gorillas. O The uniqueness of these animals is one reason why they are classified as a critically endangered species.O Within the troop,the gorillas are very playful ,gentle ,affectionate, and protective Help!!!!!!! Plsss!! Plsss! A boat sails 6km from a point x on a bearing of 065 and thereafter 13km on a bearing of 136, what is the distance and of the boat from x? Imagery words in caged birds by maya anglou 1. What arguments do Feingold and Heuvel offer in defense of Roosevelt? 2. What does Michael Beschloss mean when he describes Roosevelts response to the Holocaust as a "strange lapse?" 3. Why does David Wyman call it "the worst failure of his presidency"? (03.04 LC)The greatest goal in advertising is to convince us "wants" are unnecessary the firm has the best price a particular product is a "need" the product is the same as other firm's products Would you prefer to receive an electronic mail or a handwritten letter? Provide a brief explanation of your answer. Estimate the perimeter, and also please show your work! plz answer ASAP rlly need it Sebastian goes out to lunch. The bill, before tax and tip, was $8.75. A sales tax of 5% was added on. Sebastian tipped 17% on the amount after the sales tax was added. How much tip did he leave? Round to the nearest cent. Once the ball reaches the very top it's velocity is ?A) zeroB) negativeC) acceleratingD) positive please some body give me diomands and dj alok I will like him in every answer an mark as brainliest and follow