Which of the following statements is true about the movement of fluid in a
convection cell?
A. Hot fluid rises because it is denser.
B. Cool fluid rises because it is less dense.
C. Cool fluid sinks because it is denser.
D. Hot fluid sinks because it is less dense.

Answers

Answer 1

The option that is true about the movement of fluid in a convection cell is B. Cool fluid rises because it is less dense.

What is a convection cell?

It should be noted that a convection cell simply means a system where a fluid is warmed and loses density.

In this case, cool fluid rises because it is less dense. The colder and denser part of the fluid simply descends below the warmer fluid.

Learn more about cells on:

https://brainly.com/question/13123319


Related Questions

EASY 7TH GRADE SCIENCE QUESTION FIRST PERSON BRAINLIEST!!!!!

A. Velocity varies with the compass direction of motion

B. Measurement error causes multiple observations of motion to conflict

C. All motion is relative to the frame of reference chosen for measurement

D. Acceleration and velocity have different values because they are different measures of motion

Answers

Answer:

C. All motion is relative to the frame of reference chosen for measurement

Explanation:

how is the phloem in a leaf related to the roots of the plant?

a. cells that contain sugar move between the leaf and roots within the phloem. 

b. chloroplasts that make sugar move through phloem cells to the roots. 

c. water in the phloem cells comes to the leaf from the roots. 

d. sugar made in the leaf is carried to the roots by cells in the phloem.

Answers

Answer:

The phloem carries important sugars, organic compounds, and minerals around a plant. Sap within the phloem simply travels by diffusion between cells and works its way from leaves down to the roots with help from gravity. The phloem is made from cells called 'sieve-tube members' and 'companion cells'.

Answer: Leaves

Explanation: online school

Help me please this is my last question

Answers

Answer:

Inflammation

Explanation:

Innate Response:

"The innate immune system is the body's first line of defense against germs entering the body. It responds in the same way to all germs and foreign substances, which is why it is sometimes referred to as the "nonspecific" immune system. It acts very quickly: For instance, it makes sure that bacteria that have entered the skin through a small wound are detected and destroyed on the spot within a few hours. The innate immune system has only limited power to stop germs from spreading, though. The innate immune system consists of: Protection offered by the skin and mucous membranes AND Protection offered by the immune system cells (defense cells) and proteins."

Acquired Response:

"The adaptive immune system takes over if the innate immune system is not able to destroy the germs. It specifically targets the type of germ that is causing the infection. But to do that it first needs to identify the germ. This means that it is slower to respond than the innate immune system, but when it does it is more accurate. It also has the advantage of being able to "remember" germs, so the next time a known germ is encountered, the adaptive immune system can respond faster. The adaptive immune system is made up of: T lymphocytes in the tissue between the body's cells AND B lymphocytes, also found in the tissue between the body's cells AND Antibodies in the blood and other bodily fluids."

I'm sure it's Inflammation, so here is the definition for that:

"Inflammation refers to your body's process of fighting against things that harm it, such as infections, injuries, and toxins, in an attempt to heal itself. When something damages your cells, your body releases chemicals that trigger a response from your immune system."

I hope this helped! Enjoy the rest of your day!

what is the percentage of thymine in human ?

Answers

Answer:

29.4% or rounded 29%

Explanation:

Thymine is a compound which is one of the four constituent bases of nucleic acids. A pyrimidine derivative, it is paired with adenine in double-stranded DNA.

Hope this helps ya!!

For example, in humans, there’s approximately: 30.9 percent Adenine. 29.4 percent Thymine. 19.8 percent Cytosine.

DNA is needed to create mRNA.
True
False

Answers

Answer:

False

Explanation:

Because i am mart

False , A binds to c

1. What caused the Lake Missoula

Answers

Answer:

The lake was the result of an ice dam on the Clark Fork caused by the southern encroachment of a finger of the Cordilleran Ice Sheet into the Idaho Panhandle. It was the largest ice-dammed lake known to have occurred.

Hope this helps:)

Which structure is directly responsible for housing a cell's DNA?
O lysosomes
o vacuoles
O mitochondria
O nucleus

Answers

Answer:

The nucleus.

Explanation:

The nucleus is basically "the boss" of DNA along with housing it. Hope this helps!

ALOT OF POINTS

what are some pros and cons of fire suppression?

Answers

Answer:

It is good because it keeps the fire under control but is bad because of pollution and it is harder to see.

Explanation:

What property of water allows water
to soak up so much CO2 gas?

Answers

Answer:Carbonic acid releases hydrogen ions, which combine with carbonate in seawater to form bicarbonate, a form of carbon that doesn't escape the ocean easily. As we burn fossil fuels and atmospheric carbon dioxide levels go up, the ocean absorbs more carbon dioxide to stay in balance.

Explanation:

Use the results of Demetri's experiment to explain why the color changed on some test strips but not others.

Answers

Answer:

It did this because some of the soultions didnt have glucose.

Explanation:

If temperature remains the same and pressure goes up, volume goes (up or down)

Answers

Answer:

Volume goes up.

I need help on this question please!

Answers

Explanation:

single stranded

Hey, can someone help me with three questions in biology? Thanks.

How many CO2 molecules are produced when three glucose molecules undergo cellular respiration?(1 point)

A. 6

B. 3

C. 18

D. 12

Suppose cellular respiration occurs inside an insulated, sealed container. How does the container’s weight change during the reaction?(1 point)

A. fluctuates

B. increases

C. decreases

D. stays the same

How would a 3D model of glucose differ from the formula model?(1 point)

A. A 3D model shows how the different atoms are arranged, but the formula model does not.

B. A 3D model shows the number of each type of atom, but the formula model does not

C. A formula model shows size of the glucose molecule, but the 3D model does not.

D. A formula model shows which atoms are larger but the 3D model does not.

Answers

yes someone help me with three questions in biology? Thanks.

How many CO2 molecules are produced when three glucose molecules undergo cellular respiration?(1 point)

A. 6

B. 3

C. 18

D. 12

Suppose cellular respiration occurs inside an insulated, sealed container. How does the container’s weight change during the reaction?(1 point)

A. fluctuates

B. increases

C. decreases

D. stays the same

How would a 3D model of glucose differ from the formula model?(1 point)

A. A 3D model shows how the different atoms are arranged, but the formula model does not.

B. A 3D model shows the number of each type of atom, but the formula model does not

C. A formula model shows size of the glucose molecule, but the 3D model does not.

D. A formula model shows which atoms are larger but the 3D model does not.

Answer: # 1: c.  #2: d.  #3: a

Explanation:

#1 is C. because the equation for cellular respiration is C₆H₁₂O₆

+ 6O2 --> 6H20 + 6CO2 + ATP

This says the reactants (inputs) are oxygen and glucose and the products (outputs) are water, carbon dioxide, and ATP. 1 glucose molecule makes 6 carbon dioxide, so 3 glucose would make 18 carbon dioxide molecules.

#2 is D. because the law of conservation of matter states that matter cannot be created nor destroyed, so the weight before and after cellular respiration would stay the same, as the matter would not change.

#3 is A. because a model would show the exact way the molecules would be arranged, while a formula only tells you how many there are, not the way they would be made up.

Hope this helps :)

where do convection currents occur.
A. in areas with the same temperature.
B. in areas with the same altitude.
C. in areas with different air pressures
D. in areas with different cloud types.

Answers

Answer:

the answer is C-in areas with different air pressures

Explanation:

Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated.

Answer:C. in areas with different air pressures

Explanation:

Water cannot change rock underneath earth surface (true or false)

Answers

Answer:

false because water is what made the canyons a canyon, water,

so it is false

Explanation:

how do bacteria in hydrothermal vents produce food?
A. photosynthesis
B. chemosynthesis
C. osmoosis
D. by respiration

Answers

B... These microbes are the foundation for life in hydrothermal vent ecosystems. Instead of using light energy to turn carbon dioxide into sugar like plants do, they harvest chemical energy from the minerals and chemical compounds that spew from the vents—a process known as chemosynthesis . (I got this off the web hope it helps)

which of the following is a measure of the force with which molecules in the atmosphere push on the surface?

A. air pressure
B. temperature
C. precipitation
D. relative humidity

Answers

Answer:

temperature

Explanation:

. Cuando la célula madre se divide varias veces de forma consecutiva y los núcleos se rodean del citoplasma dentro de ella, es una reproducción tipo:

Answers

Answer:

Cuando la célula madre se divide varias veces de forma consecutiva y los núcleos se rodean del citoplasma dentro de ella, es una reproducción tipo: esporulación.

Explanation:

En la reproducción asexual, un solo ser origina nuevos individuos iguales entre si e iguales a su progenitor. Este tipo de reproducción es común en ciertos invertebrados, en las bacterias y en los protozoarios. La esporulación es uno de los tipos de reproducción asexual, esta consiste en varias divisiones del núcleo que se envuelve de fragmentos citoplasmáticos, originando muchos descendientes genéricamente idénticos. Dicha reproducción permite la formación de esporas y la liberación de las mismas cuando las paredes de la célula se rompen. Se observa en ciertas especies de protozoarios.

Large areas around the globe with similar climates and similar communities of organisms form

a
a population.
b
a biome.
c
an ecosystem.
d
a species.

Answers

Answer:

c

Explanation:

Answer:

a biome

Explanation:

a species is a type of animal kind, a population is the number of a certain species, an ecosystem is basically a big web of nature that is connected. so we can rule those 3 out. a biome is a part of land with similar climates and organism population

2.) Interphase includes what "3" things. Check all 3.
*
A. Growth
B. DNA copied
C. Sister chromatins pulled apart
D. Preparing to divide
E. cytokinesis

Answers

The answer is A, B, and D
This is A, B, and D

please help will mark brailiest!!

Answers

Answer:

active transport through protein channels

Explanation:

im pretty sure

what is the percentage of cytosine in wheat ?

Answers

Answer:

22.8%

Explanation:

What could be the reason that Jesse cannot lose weight, despite help from his friends?
a) He may have a high set point.
b) His pituitary could be overactive.
c) He may have a high RAS.
d) None of these

Answers

Answer:

a) He may have a high set point.

Explanation:

how do the villi and microvilli maximize the ability of the intestine to absorb nutrients?

Answers

Answer:The function of the plicae circulares, the villi, and the microvilli is to increase the amount of surface area available for the absorption of nutrients. Each villus transports nutrients to a network of capillaries and fine lymphatic vessels called lacteals close to its surface.

Explanation:

Write a statement about the role gravity plays in the motion of the planets.

Answers

Answer:

Gravity is what holds the planets in orbit around the sun and what keeps the moon in orbit around Earth. ... Gravity creates stars and planets by pulling together the material from which they are made. Gravity not only pulls on mass but also on light.

please help me, i dont like this :(

Answers

Answer:

This is false.

Explanation:

Plants are eukaryotes, meaning they contain a nucleus in their cells. Prokaryotes, such as bacteria, do not contain a nucleus, and their genetic material, better known as DNA, floats about freely in their cytoplasm.

The answer to this is false

Climate conditions in a small area that differ significantly from the climate of the surrounding area are called
a natural features.
C. biomes.
b. microclimates.
d. ecosystems.

Answers

Answer:

b. microclimates.

Explanation:

Microclimates are the climate conditions in a small area that differs significantly from the climate of the surrounding area.

These climatic conditions are usually substantially different from the local climate of an area.

Microclimates can be induced by human activities for example in urban centers with high rise buildings. Also, bodies of water can influence the local climate of an area. Areas with high elevation usually have distinct climatic conditions.

Can someone help me figure this out please?

Answers

You need to make 3 pies, one for NaCl, one for C6H12O6, and one for NaOH.

NaCl has two elements, Na (sodium) and Cl (chlorine).

C6H12O6 has three different elements, carbon (C), hydrogen (H), and oxygen (O).

NaOH has three elements, Na (sodium), O (oxygen), and H (hydrogen).

Where does the carbohydrate reside ? Where is it found in cells ? What types of food is it found in ?

Answers

Carbohydrates are the sugars, starches and fibers found in fruits, grains, vegetables and milk products. Though often maligned in trendy diets, carbohydrates — one of the basic food groups — are important to a healthy diet.

Identify the phase of mitosis described in each step, and then put the steps in the correct order.

Answers

Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. Some textbooks list five, breaking prophase into an early phase (called prophase) and a late phase (called prometaphase).
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