Why do mammals require lungs? Provide 3 reasons.

Answers

Answer 1
I can only find 2, I hope this helps

-To deliver oxygen to the cells of the body's tissues and remove carbon dioxide.
- The lungs also remove carbon dioxide from the blood. If carbon dioxide built up in a body, death would result.
Answer 2
All life respires, or breathes. Respiration in mammals is similar to respiration in other air-breathing animals. Respiration extracts oxygen from the air, which is then used by cells. Respiration also carries waste carbon dioxide away from the cells. Although respiration depends on other systems, like the circulatory system, to take oxygen and carbon dioxide to and from cells, the respiratory system has the primary responsibility of bringing oxygen in to a mammal's body and sending carbon dioxide into the atmosphere.

Mammalian respiration occurs in the animal’s respiratory system. A respiratory system is made up of muscles and airways that work to bring fresh air into lungs where oxygen is exchanged in blood for carbon dioxide. The airways are often lined with hairs or other structures that help to clean the air of dust and microbes before it enters the lungs.

Mammalian respiratory systems rely on a single large muscle at the base of the lungs. This muscle is called a diaphragm. The diaphragm pulls the lungs downward to increase their volume, causing air to rush into the lungs. As it presses upward, the lungs become smaller, and air is exhaled. Muscles in the rib cage work in consort with the diaphragm to expand and contract the lungs.

Related Questions

Are assorted jelly beans heterogeneous or homogeneous

Answers

Heterogeneous, which means that they are not evenly combined.


1. What is a chemical reaction

Answers

a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.

Answer:

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. ... A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products

Explanation:

what does acetic mean​

Answers

Answer:

Acetic

Explanation:

organic chemistry of, pertaining to, or producing vinegar

organic chemistry of or pertaining to acetic acid or its derivatives

Answer:

dym like vinegar or acetic acid

Need an answer asap plzzzzzzzzzzzzzzzzzzz!

Answers

What is the question

WILL GIVE BRAINIEST is C6H1005 + O2 → CO2 + H2O balanced?

Answers

Answer:

No! The balanced equation is given below:

C₆H₁₀O₅ + 6O₂ —> 6CO₂ + 5H₂O

Explanation:

C₆H₁₀O₅ + O₂ —> CO₂ + H₂O

The equation above is not balanced. It can be balance as illustrated below:

C₆H₁₀O₅ + O₂ —> CO₂ + H₂O

There are 6 atoms of C on the left side and 1 at the right side. It can be balance by 6 in front of CO₂ as illustrated below:

C₆H₁₀O₅ + O₂ —> 6CO₂ + H₂O

There are 10 atoms of H on the left side and 2 atoms on right side. It can be balance by 5 in front of H₂O as illustrated below:

C₆H₁₀O₅ + O₂ —> 6CO₂ + 5H₂O

There are a total of 7 atoms of O on the left side and a total of 17 atoms on the right side. It can be balance by 6 in front of O₂ as illustrated below:

C₆H₁₀O₅ + 6O₂ —> 6CO₂ + 5H₂O

Now, the equation is balanced.

What can help overcome a positive enthalpy of solution and allow a solid
solute to dissolve in water?
A. A decrease in entropy
B. A large amount of energy released
C. A large amount of energy absorbed
D. An increase in entropy

Answers

Answer: D. An increase in entropy

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from  an disordered arrangement to an ordered arrangement, the entropy is said to increase and vice versa.

For a reaction to be spontaneous, the enthalpy of the solution must decrease and the entropy must increase.

To overcome a positive enthalpy of solution and allow a solid  solute to dissolve in water, an increase in entropy would make the reaction spontaneous as the system would move to a more disordered state.

when you burn wood in a campfire, ____ energy is converted to ____ and light energy.

Answers

Answer:

when you burn wood in a campfire, chemical energy is converted to heat and light energy.

Explanation :

When wood is burned stored potential energy ( in the form of chemical energy ) in the log is released due to heating by other excited atoms . This process is called combustion and requires presence of oxygen. So,  combustion can be defined as a process which changes chemical energy into kinetic energy in the form of heat.  In case of combustion  an organic say wood in this case combines with oxygen present in the atmosphere to give off carbon dioxide, water and energy in the form of heat and light .    

What is the answer for number 2?

Answers

Answer:

It has mass but no charge.

Explanation:

The question asks to describe ONE of the subatomic particles that could be found at location X in the model, so you should think of protons and neutrons. Now all of the answers do NOT describe a proton, but the first answer describes a neutron. Neutrons have mass but no charge. Why? The neutron has two down quarks and one up quark, down quarks, have a charge of -1/3, and up quarks have a charge of +2/3. Doing the math, you'd see that (-1/3)2+2/3 is equal to a neutral charge. So a neutron WILL have a mass, but will NOT have a charge, as they are used to hold the nucleus together.

Answer:

the last one

Explanation:

What is the conversion for 5 g + 3.3 mL =

Answers

Answer:

9 g/ml

Explanation:

5 + 3.3 = 8.5

But you should use sig figs.

5 has no tenths, hundredths, and etc.

Therefore the 8.5 rounds up to 9

So the answer is 9.

# of protons = 48

Cadmium
Titanium
Oxygen
Krypton

Answers

Answer:

Cadmium +p= 48

Titanium p=22

Oxygen p=8

Krypton p=36

So the answer is Cadmium which has #48 protons

Explanation:

Explaining Radioactive Decay
Explain the process of radioactive decay. What happens during radioactive decay, and what is the result at the end of radioactive decay?

Answers

Answer:

Radioactive decay is the process in which the nucleus of an unstable isotope spontaneously changes, releasing particles and energy. An unstable isotope will continue to decay until it reaches the stable form of either a different isotope of the same element that is stable or a different element that is stable.

Explanation:

Answer:

Sample Response: Radioactive decay is the process in which the nucleus of an unstable isotope spontaneously changes, releasing particles and energy. An unstable isotope will continue to decay until it reaches the stable form of either a different isotope of the same element that is stable or a different element that is stable.

If you want to make your own make sure to include.

- Radioactive decay is the process in which the nucleus of an unstable isotope spontaneously changes, releasing particles and energy.

- An unstable isotope will continue to decay until it reaches a stable form.

- The stable form could be a different isotope of the same element that is stable or a different element that is stable.

Explanation:

Edge 2021

What does a dam generating electricity from water flowing downhill show?

how systems take advantage of energy flowing from low to high

how systems take advantage of energy flowing from high to low

how systems violate the law of the second law of thermodynamics

Answers

Answer: the 3 one

Explanation: i just know

Answer:

how systems violate the law of the second law of thermodynamics

Explanation:

i had to take this quiz it is the right answer..

57.6 75 is rounded off to give answer in 4 significant figures as​

Answers

Answer:

57.68

Explanation:

Last digit is 5 so we round of 7 to 8

How many grams of MgO are in 3.500 moles?

Answers

(3.500 mol MgO)(40.3044g MgO/1mol MgO)
=141.0654

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, lead has the highest mass. 141.05gram of MgO are in 3.500 moles.

What is mole?

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. 141.05gram is the mass of  MgO.

Mathematically, the molar mass, mole and given mass can be related as

Mole of MgO =given mass of  MgO ÷ molar mass of  MgO

Molar mass of MgO= 40.30 g/mol

Mole of MgO= 3.500 moles

substituting the values, we get

3.500 moles = mass of MgO÷ 40.30 g/mol

Mass of MgO=141.05gram

Therefore, 141.05gram of MgO are in 3.500 moles.

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How many atoms of carbon (C) are in C6H1206?
Please give 1 answer.
A.
12
B.
3
C.
24
D.
6

Answers

It’s should be D(6)

In which type of reaction is ATP the driving force?
O
A. anabolism only
o
B. catabolism only
O
C. both anabolism and catabolism
D. neither anabolism nor catabolism

HELP PLEASE!!

Answers

The answer you’re looking for is
C.

- I hope this helps, I got it right. Enjoy the rest of your day/night, please make me brainliest!
the answer is C. good luck! :)


When 3243. grams of iron (III) chloride are reacted with 511.8 grams of hydrosulfuric acid, which is the limiting reactant?
2 FeCl3 + 3 H2S -----> Fe2S3 + 6 HCl

Answers

Answer:

Hydrosulfuric acid will act as limiting reactant.

Explanation:

Given data:

Mass of iron(III) chloride = 3243.0 g

Mass of hydrosulfuric acid = 511.8 g

Limiting reactant = ?

Solution:

Chemical equation:

2FeCl₃ + 3H₂S       →       Fe₂S₃ + 6HCl

Number of moles of iron(III) chloride:

Number of moles = mass/molar mass

Number of moles = 3243.0 g/ 162.2 g/mol

Number of moles = 20 mol

Number of moles of hydrosulfuric acid:

Number of moles = mass/molar mass

Number of moles = 511.8 g/ 34.1 g/mol

Number of moles = 15 mol

Now we will compare the moles of both reactant with products

                      FeCl₃          :          Fe₂S₃

                       2                :            1

                      20               :          1/2 ×20 = 10

                      FeCl₃          :            HCl

                       2                :              6

                      20               :          6/2 ×20 = 60

                      H₂S             :          Fe₂S₃

                       3                :            1

                      15               :          1/3 ×15 = 5

                      H₂S            :            HCl

                       3                :              6

                      15                :          6/3 ×15 = 30

Hydrosulfuric acid producing less number of moles of product thus, it will act as limiting reactant.

 

HELPPP NOW PLSSS IM GIVING 22 POINTS TO WHOEVER ANSWERS
Which is the control center for the endocrine system?

the thymus
the hypothalamus
the pancreas
the thyroid

Answers

Answer:

The hypothalams

Explanation:

It is the part of the brain that controls the endocrine system.

HOPE THIS HELPED

The hypothalams ~~~~~~

How many grams are in 657 L of N2 gas at STP?

Answers

Answer:

821.25gm

Explanation:

volume = 657

no of mole = 657/22.4

mass = no of mole * molecular mass

mass = 657/22.4*28

= 821.25gm

Where did you walk? what did you find most enjoyable while walking: listening to music, listening to an audio book, or nothing? how did your body react to this introductory amount of exercise? was it more exercise or less exercise than you are used to? if you did not walk, what other type of physical movement did you do?

Answers

Answer: walked from school few blocks before arriving .found charting and laughing with my pals most enjoyable while I was walking .my body reacted by tiredness, it is less exercise than I am capable of doing.

Explanation: did that help?

A ball, starting from rest at Position 1, rolls down and then up a curved track towards Position 5. When it reaches Position 5, it rolls back down the track
2
Which description below is most consistent with what you can expect from the ball's motion?
The ball will roll as high as Position 1 since energy cannot be created or destroyed.
The ball will roll past Position 1 since energy cannot be created or destroyed.
The ball will roll as high as Position 2 since some of the energy will be transformed to heat,
The ball will roll as high as Position 3 since that position has the least potential energy.
Kk

Answers

Answer:

D. The ball will roll as high as Position 3 since that position has the least potential energy.

Explanation:

i am not sure that it's is right or wrong

Pls help, How is stoichiometry used to calculate amounts of substances in a chemical reaction?

Answers

Answer:

Thus, to calculate the stoichiometry by mass, the number of molecules required for each reactant is expressed in moles and multiplied by the molar mass of each to give the mass of each reactant per mole of reaction. The mass ratios can be calculated by dividing each by the total in the whole reaction.

Explanation: Stoichiometry is the field of chemistry that is concerned with the relative quantities of reactants and products in chemical reactions. For any balanced chemical reaction, whole numbers (coefficients) are used to show the quantities (generally in moles ) of both the reactants and products.

Explain how a heater warms the air in a room, including the words density, volume, and temperature in your explanation

Answers

Answer:

Explanation:

Convection currents are created when the air above your radiator heats and then cools and is then heated again. This process happens continuously whilst you have your heating on and the current moves the heat around the room making it nice and warm and toasty.

What are compounds?
A. Pure substance
B.homogeneous mixtures
C.heterogeneous mixtures


ASAP PLZ HELP WIL GIVE BRAINLYS

Answers

Answer:

A compound is a material formed by chemically bonding two or more chemical elements.

Explanation:

2. Just like the N and S poles on bar
magnets, electrons and protons
each other.
A. attract
B. repel
C. repulse
D. push apart

Answers

Answer:

A) attract

Explanation:

hope it helps you

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, the correct option is option A.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. Just like the N and S poles on bar magnets, electrons and protons attract each other.

Therefore,  the correct option is option A.

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what is the anwser to this question

Answers

you didn't show the question

Answer:

N/A

Explanation:

"what is the anwser to this question" Is Not Available because this no question.

Please like this.

pls helpppp
Is the law of conservation of mass observed in each equation?

1. 2KClO3=2KCl+3O2

2. CaCO3+2HCl=CaCl2+H2O+CO2

Answers

Answer:

its c my guy

Explanation:

1. What do you observe when you poor a hot into the glass
containing intant coffee?

Answers

Answer:

The water in glass turns dark brown.

This is due to diffusion where the coffee molecules move from the region of their high concentration to a region of their lower concentration in water.

Answer:

The instant coffee acts as a solute when hot water (the solvent) is poured.  The instant coffee quickly dissolves and makes a solution.

Explanation:

Please select the word from the list that best fits the definition

Tracks the location, movement, and amount of precipitation in storms
Please select the word from the list that best fits the definition
A. radar
B. satellite

Answers

Answer:

satellite

Explanation:

found it on the internet

The correct answer is Radar

which substance will experience the greatest temperature change if 100J of energy is used to warm it? 100g of moist air, 100g of water or 100g of ice​

Answers

Sensible temperature change will be greatest for 100
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