Identify the two main gases that are exchanged between the respiratory
and circulatory systems.

Answers

Answer 1

Answer:

Oxygen and Carbon Dioxide

Explanation:

Answer 2
oxygen and carbon dioxide

Related Questions

which organisms replicate cells by mitosis?
a. animals and bacteria
b. bacteria and plants
c. animal and plants
d. archaea and bacteria
e. archaea and plants

Answers

Answer:

d.??????????????????

Answer: C!

Explanation:   eukaryotic cells may divide via either mitosis or meiosis. only sexually reproducing eukaryotes can engage in meiosis. all eukaryotes — regardless of size or number of cells — can engage in mitosis.

Having no cell nucleus, archaea do not reproduce via mitosis; rather, they procreate using a process called binary fission. So D AND E are eliminated. And so is B because that has bacteria.

SO FINAL ANSWER; mitosis happens in eukaryotes, plant and animal cells

If the number of photosynthetic organisms on Earth decreased drastically, which would happen as a result?

A. Less water would be available on Earth’s surface.
B. Less solar energy would reach Earth’s atmosphere.
C. More oxygen gas would be found in Earth’s atmosphere.
D. More carbon dioxide gas would be found in Earth’s atmosphere.

Answers

The answer is
D. More carbon dioxide gas would be found in earth’s atmosphere

¿QUE SON LOS SENTIMIENTOS? *

Answers

Answer:

pues es lo que el ser humano siente hacia los demás o ante alguna situación incluidos tristeza, alegría, temor, miedo, odio y amor aunque para mi los dos últimos no deberían ser sentimientos sino una decisión.

Why are forests important for helping to control the rate of climate change?

Answers

Answer: Forests are a stabilizing force for the climate. They regulate ecosystems, protect biodiversity, play an integral part in the carbon cycle, support livelihoods, and supply goods and services that can drive sustainable growth.

Explanation:

The forest helps to maintain ecological balance, carbon cycle and rainfall.

How forest maintains ecological balance?"Ecological balance is a state of dynamic equilibrium within a community of organisms in which genetic, species and ecosystem diversity remain relatively stable, subject to gradual changes through natural succession."The forest prevent soil erosion and maintain soil fertility. It establish oxygen and carbon balance in nature.It absorbs harmful gases like carbon from environment. What is carbon cycle?"The carbon cycle is biogeochemical cycle by which carbon is exchanged among the biosphere, hydrosphere and atmosphere of the earth."Forests takes up carbon from atmosphere and gives out oxygen.Forest helps in decay, disturbance and renewal of carbon.

Hence,  the forest regulate rainfall, ecological balance and carbon cycle.

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2. what are the differences between Mitosis and meiosis ​

Answers

Answer:

The differences between Mitosis and meiosis is Mitosis involves the division of body cells, while meiosis involves the division of sex cells. The division of a cell occurs once in mitosis but twice in meiosis. Two daughter cells are produced after mitosis and cytoplasmic division, while four daughter cells are produced after meiosis

Suppose that you compare the amount of food needed by four groups of lizards, each of which has a metabolic rate that is expected for its body size. There are 10 lizards weighing 10 g each, 5 lizards weighing 20 g each, 2 lizards weighing 50 g each, and a single 100-g lizard. Assuming equal digestibility, similar food, and so on, the _______ lizards need the most food.
A. 10-g
B. 20-g
C. 50-g
D. 100-g
E. All of the above need the same amount of food.

Answers

Answer:

The _10 gr__ lizards need the most food.

Explanation:

Metabolic rate: Refers to the energy used by the organism during a period of time. Small animals have higher metabolic rates than big animals to maintain energy levels. In general, small animals are more active than big animals. The amount of food needed by the animal to keep energy and body mass depends on the individual´s metabolic rate.

If small animals have a higher metabolic rate than big animals, then they need more food to maintain their energy levels. The relationship size-metabolic rate can be applied to different species -such a mouse and an elephant-or to the same species -like the one of the exposed example-.

So, in comparison, and considering their body sizes, 10 g lizards have the highest metabolic rate, meaning that they need the most food -again, considering their sizes- to keep energy and body mass constant.

Stored energy or energy of position is known as
Energy *
1.)Potential
2.)Kinetic

Answers

Answer:

Explanation:

1) potential because it is not "in motion"

Answer: Potential

Explanation: Stored energy is known as potential energy while energy in motion is Kinetic Energy

The factors that affect the climate are *

Answers

Answer:

factors effecting the climate

Explanation:

factors effecting the climate

Which of the following choices is an example of a non-specific barrier?
skin
white blood cells
lymphatic system
the immune system

Answers

Lymphatic system. I think

An example of a non-specific barrier is the skin. Thus, the correct option is A.

What are non-specific barrier?

Non-specific barriers are the innate, or nonspecific type of immunity of the defense system with which a person is born with. Non-specific barrier protects a person against all the antigens. Innate immunity involves the barriers which keep the harmful materials from entering the body. These barriers form the first line of defense in the immune response of an individual.

Nonspecific defense mechanisms include the skin, mucous membranes, secretions, excretions, enzymes, inflammatory responses, genetic factors, and the behavior patterns.

Skin is a physical and non-specific barrier which is covered with oily and acidic pH which ranges from 3 to 5, and the secretions from sebaceous and sweat glands, respectively.

Therefore, the correct option is A.

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What will happen to life on earth if the average annual temperature on earth continues to increase?

Answers

for me every stress comes on human can lessen its life span ,so i believe its the same to our planent.

it would become very difficult in the case of living conditions in the future for life on earth and we will end up in like the ark.

Which is an example of refraction


Answers

Refraction of a light is a process we may take of when we use eyeglasses

Which organism is an example of a producer

Answers

Plants
Producers are autotrophs, or organisms that produce their own food. Plants and algae are examples of producers. They are at the bottom of the food chain because they are eaten by other organisms, and they don't need to eat for energy.

How the structure of DNA determines the structure of proteins?

Answers

Answer:

DNA carries the genetic information for making proteins. ... The base sequence determines amino acid sequence in protein. Messenger RNA (mRNA) is a molecule which carries a copy of the code from the DNA, in the nucleus, to a ribosome, where the protein is assembled from amino acids.

Explanation:

(meow) <3

5) The following picture is of a single organism that has been Gram stained and is viewed under oil immersion on the compound light microscope. What is the reason for a single organism appearing like this after being Gram stained

Answers

Hi. You have not submitted any images about the microorganism the question refers to. This makes it impossible for me to answer your question. However, I will try to help you as best I can.

Gram stain is a test done to find out whether the bacteria are gram negative or gram positive. In this test, the bacteria are submitted to a certain type of dye and then are observed under a microscope. If the bacteria is gram positive, it will be purple in color. If the bacteria is gram negative, it will be red in color.

This is because after they are subjected to the violet dye, both types of bacteria absorb the color of the dye. However, before being observed under the microscope, the bacteria are washed with alcohol. Alcohol removes the dye from the gram negative bacteria, leaving them reddish. On the other hand, in gram positive bacteria, alcohol dehydrates the cell wall, compressing the pores and making the cell wall impermeable, preventing the dye from being released and, therefore, leaving the bacteria with a purple color.

examples of primary tools​

Answers

News paper or a text book

4. An enzyme that aids in breaking down of complex sugar into simple digestible
sugars is .... class9 standrad?

Answers

Answer:

One such enzyme is amylase.

Explanation:

Amylase is an enzyme found in saliva in the mouth that breaks down amylose in starch.

Which of the following best describes the role of meiosis?


1Creating egg and sperm cells (gamete sex cells).


2Producing more cells for an organism to grow bigger.


3Producing more organelles.


4Creating new cells that are

Answers

Answer:

eeeee

Explanation:

fdsrt fdsss fddssscdddd fddr

which stable element is used to determine the age of volcano rock

Answers

One of the most common methods to date volcanic rocks uses potassium (radioactive parent) and argon (stable daughter). Potassium is an element found in many minerals and rocks, and it normally has an atomic mass of 39.
the stable element is argon

Escribe los nombres de cinco plantas de tratamiento del agua que se encuentren en Bogotá

Answers

Answer:

Bogota esta ubicasa en un altiplank, Llama do sabana de Bogota, en la Cordillera Oriental de la Andes a una altura de 2.640 metros (8.660 pies) sobre el nivel del mar. La region extendkda se conoce Como Altiplank Cundiboyacense, que significa "altiplano de Cundinamarca y Boyaca". El rio Bogota cruza la sabana y forma el Salto del Tequendama al suroeste. Los rios afluentes forman valles done se encuentran aldeas y cuya economic se basa en la agrictura, la ganaderia y la prosuccion artesanal. La sabana limitia al este con los cerros orientals que corren de norte a sur y contienen los cerros Guadalupe y Monssrrate. El limits occidental de la ciudad esta formado por el rio Bogata. Hacia el norte, el Area Metropolitana de Bogata se extiende sobre el altiplano hasta las localidades de Cina y Sopo.

Espero que eato haya ayudado.

how to find the formula for the nth term​

Answers

“The nth term of the following types of sequences can be found out using the following Formulas:

1.Arithmetic Progression(AP) : here, the consecutive terms differ by a common difference (d).

tn= a+(n-1)d

Where,

a= is the first term of the sequence,

n= nth term

d= common difference

2. Geometric Progression(GP):

Here, the consequtive terms differ by a common ratio (r).

Tn= ar^(n-1)

where,

a = first term

r = common ratio

tn= nth term

3.Harmonic Progression (H.P):

It is the reciprocal of AP.

To find nth term of a HP, first convert it into AP and then apply the tn formula for the sequence and take the reciprocal of the obtained tn again.

Hope the answer helps you!!”

mollusks and arthropods get hit by water constantly so they built protective shell what can we hypothesize from this?

Answers

Answer:

Convergent Evolution.

Explanation:

When two different species that are very distantly related but have similar traits its Convergent Evolution due to environmental pressures.

Flatworms are part of the phylum Platyhelminthes, which means flat worm in Greek. Flatworms have eyespots that help them sense movement around them. What other characteristic do flatworms have?

A.
ability to regenerate when their body is damaged

B.
nostrils

C.
a long, slender round body

D.
segmented body parts

Answers

Answer:

A- Flatworms are unsegmented and only have one mouth/anus opening. And they are obviously flat

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which two are the most similar?
A: comets and asteroids
B:comets and meteorites C:asteroids and meteoroids
D: asteroids and meteorites

Answers

Answer:

C.Astroids and meteoroids

Which evidence in the diagram above indicates that a gas was
produced as a result of the reaction?

Answers

Answer:

the balloon

Explanation:

Compare Law of Conservation of energy and Law of Conservation of matter?

Answers

Answer:

Conservation of energy, principle of physics according to which the energy of interacting bodies or particles in a closed system remains constant. The first kind of energy to be recognized was kinetic energy, or energy of motion. In certain particle collisions, called elastic, the sum of the kinetic energy of the particles before collision is equal to the sum of the kinetic energy.

Explanation:

Super saturated solutions are used to make rock candy. Please describe how the crystals are formed, be sure to use the terms Solute and Solvent.

Answers

Answer:

Once the solution cools, it now has more solute than it normally could have, and this is called a supersaturated solution. Once a solution becomes supersaturated, it wants to crystallize the excess solute. The solute will form crystals on any surface. In our case the surface is a string, and we are using a lifesaver candy as our “seed.”

Explanation:

Rock candy is a type of candy made by growing sugar crystals on a string or stick.

Why are Super saturated solutions used?

Super saturated solutions are often used to make rock candy because they contain more solute (sugar) than the solvent (water) can normally dissolve at a given temperature.

The first step in making rock candy is to heat water in a saucepan and add sugar to it. The sugar dissolves and forms a solution as the water heats up. After that, the solution is heated until it is completely saturated.

This occurs because the super saturated solution is unstable, and the excess solute (sugar) in the solution wants to escape and form crystals.

As time passes, more sugar dissolves from the solution and adheres to the crystals on the string or stick, causing them to grow larger.

The process is repeated until the crystals reach the desired size or until all of the excess solute has been removed from the solution.

Thus, preparing a super saturated solution of sugar and water, then dipping a string or stick into the solution and allowing the excess solute to come out of the solution and form crystals on the string or stick, is the process of making rock candy.

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After a skeletal muscle fiber is treated with a membrane permeable drug that speeds up the action of the SR Ca 2-ATPase, how would contraction differ after multiple and frequent action potentials

Answers

Answer:

the twitch would be shorter

Explanation:

In muscle cells, the calcium (Ca2+) pump ATPase membrane transport proteins maintain a low cytosolic Ca2+ concentration in order to promote muscle contraction. Muscle relaxation occurs when the sarcoplasmic reticulum reabsorbs Ca2+ through the Ca2+-ATPase protein, thereby reducing intramuscular Ca2+ levels. In muscle contraction, intracellular Ca2+ levels are raised due to the release of Ca2+ from the sarcoplasmic reticulum (SR) via Ca2+-release channels. In consequence, it is expected that a specific drug that speeds up the action of (Ca2+) pump ATPase protein should shorten the contraction-relaxation cycle by increasing the velocity of muscle relaxation.

what is a nucleic acid that contains the genetic information for heredity in most organisms.

Answers

Answer:

  deoxyribonucleic acid   Or ( DNA)

Explanation:

DNA contains the genetic information for heredity in most organisms.

Have a wonderful Day!

Answer:

there's all the answers

Explanation:

During exercise, epinephrine and norepinephrine are released from the adrenal medulla. Epinephrine and norepinephrine have the same effect on plasma glucose levels as glucagon. Explain how epinephrine and norepinephrine affect plasma glucose and why this is important during exercise.

Answers

Answer and explanation:

Epinephrine and norepinephrine are two hormones that are released from the adrenal medulla when the body is under stress (like during exercise, for example) as a part of the sympathetic response.

These hormones have many functions and they all work together to prepare the individual for a fight or flight response - like increasing heart rate and producing bronchodilatation. One of these functions is the rise of glucose levels in blood which is important for this substance to reach several tissues, like the skeletal muscle. The skeletal muscle will make use of this glucose to produce ATP and generate the required energy for muscle contraction through a process called glycolysis, which is key for the fight or flight response mentioned above.

When we exercise, glucose levels rise thanks to these hormones so the skeletal muscle can have enough energy to contract and move as we want. If the exercise is too intense or prolongued, glucose levels will drop and other fuels will be needed to sustain this activity, like stored glycogen and fat.

How are meiosis and mitosis different?

Answers

Explanation:

mitosis results in two identical cells while meiosis results in four sex cells.

mitosis:prophase is short,meiosis: prophase is longer.

mitosis: daughter cells are genetically identical,meiosis:daughter cells are genetically different.

Answer:

meiosis and mitosis different by:

in mitosis Daughter cells are genetically identical

whereas in meiosis Daughter cells are genetically different

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The Aztec came to power in central Mexico during the A.D 1300s. fact or opinion Darius is studying the relationship between mathematics and art. He asks friends to each draw a "typical rectangle. He measures the length and width in centimeters of each rectangle and plots the points on a graph, where x represents the width and y represents the length. The points representing the rectangles are (6.1, 12.0), (5.0, 8.1), (9.1, 15.2), (6.5, 10.2), (7.4, 11.3), and (10.9, 17.5). Which equation could Darius use to determine the length, in centimeters, of a "typical rectangle for a given width in centimeters?y = 0.605x + 0.004y = 0.959x + 0.041y = 1.518x + 0.995y = 1.967x + 0.984 Escribe lo que hacen estas personas en la cafetera. (Write what these people are doing in the cafeteria.) 1. Irene beber 5. yo / comer 2. ustedes compartir 6. c / hacer 3. yo / hacer 7. los estudiantes beber U 4. nosotros vender 8. Trinidad y yo compartir A small firm intends to increase the capacity of a bottleneck operation by adding a new machine. Two alternatives, A and B, have been identified, and the associated costs and revenues have been estimated. Annual fixed costs would be $36,000 for A and $31,000 for B; variable costs per unit would be $7 for A and $11 for B; and revenue per unit would be $18.Requied:a. Determine each alternatives break-even point in units.b. At what volume of output would the two alternatives yield the same profit?c. If expected annual demand is 10,000 units, which alternative would yield the higher profit? 15. Assume that Bullen issued 12,000 shares of common stock, with a $5 par value and a $47 fair value, to obtain all of Vicker's outstanding stock. In this acquisition transaction, how much goodwill should be recognized 7.What is a community?populations that live and interact in the same area10096individuals of the same species that live in different areastoindividuals of the same species that live in the same area90%populations that live in similar environments around the world can someone help will mark brainliest A merchant bought 300 apples at the rate of 5 for RS.90 and sold 120 of them at Rs.300 per dozen. If he wants to make a profit of RS.2100 in all, at what rate per dozen should he sell the rest of them? Conjugate the following verbs based on the subject pronoun given.1.) Verb: caminar, Subj Pron: T; Answer:2.) Verb: hablar, Subj Pron: Ella; Answer:3.) Verb: necesitar, Subj Pron: Yo; Answer:4.) Verb: terminar, Subj Pron: Nosotros; Answer:5.) Verb: estudiar, Subj Pron: Ellas; Answer: Which of the following solutions is the weakest base?a) pH 2.3b) pH 4.6 c) pH 6.6d) pH 7.9e) 12.5 What is the value of x^2/y^1 when x=10 and y=5? Consider this example on how different a median can be from a sample. Suppose there is a company that mentions the average salary at Company A last year was $ 135,750 per year. Being interested in this you try to investigate this. You discover there are 8 individuals, including the business owner, that works at the company. You discover that the salaries of the 7 individuals are surprisingly low. The salaries of those 7 individuals are $8,000, $8,000, $7,000, $11,000, $15,000, $17,000, and $20,000. You then discover the salary of the business owner to be $1,000,000.Compare the mean with the median? What does this show?Find Q1 (first quartile) , Q3 (third quartile) , and Interquartile Range (IQR)?Are there outliers? Please prove there is an outlier using the Q1-1.5*IQR and Q3 + 1.5*IQR formulas?Find the 10% trimmed mean of the 8 salaries above. Compare this with the median found in part a.What do you think represents a more typical salary of the organization above? Would you want to work for this company? Question 12. By the time the software _______ on sale next month, the company ______ $2 million on developing it. A. Went had spent B. Will go has spent C. Has gone will spend D. Goes will have spent Fill in the blanks below in order to justify whether or not the mapping shown represents a function With the frequency set at the mid-point of the slider and the amplitude set at the mid-point of the slider, approximately how many grid marks is the wavelength of the wave (use the pause button and step button as you need to in order to get a good measure, and round to the nearest whole grid mark)?If the amplitude is increased the wavelength:___________. a. decreases b. stays the same c. increases have a/ I wish/ chance to/ I could/ study abroad/ this summer A mixture of 40 liters of paint is 25% red tint, 30% yellow tint and 45% water. 8 lters of yellow tint are added to the original mixture. Find the volume of a pyramid with a square base, where the area of the base is 19.8 cm2 and the height of the pyramid is 13.9cm. Round your answer to the nearest tenth of a cubic centimeter Mississippi River runaways Sora lives near a farm that performs aerial pesticide spraying every month. She notices a yellow haze around herhome after each spray. What might she do to minimize her risk of pesticide exposure?O wash vegetables purchased from the supermarketO select organic produce from the local farmers' markettake off her shoes at the door before entering her homeO repaint the walls inside her home with lead-free paint