Convection occurs because heated material becomes ____________________. A less dense and rises B denser and rises C denser and sinks D less dense and sinks

Answers

Answer 1

Answer: A less dense and rises

Explanation:

Convection is a type of heat transfer happens when there is a movement of fluid (liquid or gas) in which convection currents are produced due to the movement of hot fluid upwards and cold fluid downwards. This happens as the density of hot fluid decreases due to presence of less number of mmolecules per unit volume. As the hot liquid becomes less dense, it starts moving upwards.

Thus convection occurs because heated material becomes less dense and rises.


Related Questions

How does DNA in cells determine an organism's complex traits?

A. DNA contains codes for proteins, Which are necessary for the growth and functioning of an organism

B. DNA separates into long single strands that make up each part of an organism

C. DNA produces the energy an organism needs in order to grow

D. DNA folds into the nucleus of each of the cells of an organism


PLEASE HELP!!

Answers

I think answer should be d. Please give me brainlest I hope this helps let me know if it’s correct or not okay thanks

Answer:

A. DNA contains codes for proteins, Which are necessary for the growth and functioning of an organism

Explanation:

1.scientist refer to a biological community and the abiotic parts of the environment that affects the community as _______?

A. Biome

B. Ecosystem

C. Population

D. Community

Answers

The answer is B. Ecosystem

What is it called when DNA is not bunched together

Answers

supercoiling is the answer

Explain the production of urine, include the processes of Ultra filtration and selective reabsorption.

Answers

Answer:

Urine Is 95% Water

Explanation:

The Glomerulus Filters Water and Other Substances from the Bloodstream

The Filtration Membrane Keeps Blood Cells and Large Proteins in the Bloodstream

Reabsorption Moves Nutrients and Water Back into the Bloodstream

. Waste Ions and Hydrogen Ions Secreted from the Blood Complete the Formation of Urine

The sequence of DNA below is part of a gene. How many amino acids are coded for by this segment?
5 ATTAGTCCGTAC 3
A. 2
B. 3
C. 4
D. 5

Answers

Answer:

b

Explanation:

Compare the planets Mars and Saturn. Describe how their common characteristics are similar.

Answers

Answer:

Both Mars and Saturn have rings.

Mars And Saturn both have rights with them

Inherited used in a sentence

Answers

I inherited my parents genes.

There is a belief that there are as many neurons in the human body as there are stars in the Milky Way Galaxy. Do you believe this? How would you react on this?

Answers

Answer:

I do believe this. If you take the amount of neurons in the average adult body and expand them to the size of a say a blueberry It would expand to be the approximately the size of the sun

Explanation:

The given statement is true. It is a surprising fact that helps a person to believe that his brain has the power to take him beyond expectations.

What are Neurons?These are the nerve cell that is found in the brain and nerve tissue in the body.It has been estimated that there are 100 billion neurons in the human brain which is about the number of stars in our Galaxy.The human brain is very complex and this complexity comes from such a huge number of neurons.

Therefore, the given statement is true. It is a surprising fact that helps a person to believe that his brain has the power to take him beyond expectations.

Learn more about the human brain:

https://brainly.com/question/1282105

How did the invention of the microscope contribute to knowledge about 1p living things?​

Answers

Answer:

It made it possible for people to discover and learn about cells.

Explanation:

The cell is the basic unit of structure and function of all living beings. A cell can also be defined as a morphological, functional, and reproductive unit of all living beings.

Every living organism is made up of one or more cells. All cells are created from an existing cell. A cell is the smallest unit that has all the characteristics of life. A set of cells of similar or the same appearance, embryonic origin, and function is called tissue.

The science that studies the cell is called cytology. There are organic and inorganic compounds in the cell. Of the inorganic compounds, water and salts are the most common. Organic compounds in the cell contain carbohydrates, fats, and proteins.

6) Pamela went to the doctor for her yearly check-up. They discovered that she had decreased
estrogen and progesterone levels. After a few months of medication, her levels returned to
normal. She stressed to her doctor that she wanted a child. Her doctor said that with the
hormonal supplements, she should be able to conceive a child.
What systems are affected?
Why?

Answers

Answer:

strogen and progesterone levels

Explanation:

she stressed to her doctor

n the experiment "What Effect Does Vinegar Have on Plant Growth?" some plants were given only water, some were given only vinegar, and the others were given various mixtures of water and vinegar. Which of the following groups is the control group in the experiment?
50% water and 50% vinager
100% water
100% vinager
or 25% vinager and 75% water

Answers

50% water and 50% vinager

Each trait of a plant is determined by
one gene
one dominant gene
a pair of genes
an allele

Answers

Answer: an allele .

Explanation:

the final phase of mitosis characterized by the separated chromosomes reaching the poles
of the cell. The nuclear membrane and nucleolus begins to reappear around each set of
chromosomes

Answers

Answer:

Telophase

Explanation:

What is the function of Primase?

Answers

Answer:

Explanation:

"Primase is an enzyme that synthesizes RNA sequences called primers.  primase produces RNA molecules, the enzyme is a type of RNA polymerase."

Hope this helps :)

The_______
is a theme in the Gospel of Mark that portrays the disciples and others as recognizing Jesus' identity as the Messiah
Jesus directed them not to tell anyone else.

Answers

Answer:

Messianic secret

Explanation:

The Messianic secret is a theme in the Gospel of Mark that portrays the disciples and others as recognizing Jesus' identity as the Messiah. Jesus directed them not to tell anyone else.

Hope this helps!

pls mark brainliest :)

3. What is it called when water vapor is evaporated from plant surfaces? *
Transpiration
Respiration
Photosynthesis
All of the above

Answers

Transpiration ...............
“Transpiration is the exhalation of water water vapor through the stomata.” So I’m going to guess the first one.

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1. Which criteria are used to classify amphibians into orders?

Answers

Answer:

They are classified into three orders: frogs and toads, salamanders and newts, and caecilians.

Approximately 8,100 species of living amphibians are known. First appearing about 340 million years ago during the Middle Mississippian Epoch, they were one of the earliest groups to diverge from ancestral fish-tetrapod stock during the evolution of animals from strictly aquatic forms to terrestrial types. Today amphibians are represented by frogs and toads (order Anura), newts and salamanders (order Caudata), and caecilians (order Gymnophiona). These three orders of living amphibians are thought to derive from a single radiation of ancient amphibians, and although strikingly different in body form, they are probably the closest relatives to one another.

What type of mutation is shown in the example below?
Original DNA: ATCGTCGTCGT
Mutated DNA: ATCGTCGTGT

Answers

It is a deletion mutation

Help me ASAP! CORRECT ME IF AM WRONG TY BOYS AND GIRLS

Answers

Answer:

CORRECT

Explanation:

What is the role of enzymes in the DNA replication process?
A. Enzymes read the DNA code and build a new DNA molecule from scratch.
B. Enzymes link together to form a template for a new DNA molecule to be built.
C. Enzymes split the DNA molecule into two rails and then transport corresponding nitrogenous bases to each rail.
D. Enzymes link adjacent nucleosides together, becoming an integral part of the structure of the new strands of DNA.

Answers

Answer:

B.

Explanation:

Which is held constant when a gas obeys Boyle's law?

A. motion
B. pressure
C. temperature
D. volume

Answers

Answer:

B

Explanation:

ganyan rin sagot ko sa module ko

When a gas obeys Boyle's law, the temperature is held constant. The correct option is C.

What is Boyle's law?

Boyle's law is given by Charles Boyle. It is a gas law that states the pressure decrease with the increase in the volume and the temperature remain constant. In other words, the pressure exerted on gas is inversely proportional to the volume of the gas.

The law shows the relationship between pressure and volume, with the temperature remaining constant. There are three gas laws which are given by different scientists. These laws show the relationship between two variables and the third remains constant. These variables are temperature, volume, and pressure.

Thus, the correct option is C. temperature regarding the gas obeys Boyle's law, and it remains constant.

To learn more about Boyle's law, refer to the link:

https://brainly.com/question/1437490

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2x+3y=12
x-5y=-7
solve simultaneously ​

Answers

Hey this answer your question

please help!! 15 points

Answers

Answer:

The answer is the age of the rock.

Explanation:

Scientists can use their tools and DNA to figure out the age of rocks.

Overgrazing reduces grass cover and negatively impacts the soil health by reducing it's ability to hold water . How can Overgrazing be prevented and support a more sustainable use of grasslands ?
A. Allow developers to buy rachlands for housing .
B. practice moving confined cattle every few days
C. Allow unlimited animals to graze in a given area to reach carrying capacity.
D. practice grazing an area of land at the same stage of plant growth each year .​

Answers

Answer: C. Allow unlimited animals to graze in a given area to reach carrying capacity.

Explanation: I choose this as the answer because the animals grazing in the wrong parts be part of the reason the soil can't hold the water it needs, so allowing animals in a particular area that's less of a problem with Overgrazing would be helpful

The difference between active and passive transport is that–

A. Passive transport requires energy to move molecules up a concentration gradient, and active transport does not.

B. Passive transport can only move specific particles across a membrane, and active transport can move any particle.

C. Active transport requires energy to move molecules up a concentration gradient, and passive transport does not.

D. Active transport moves molecules in animal cells, and passive transport moves molecules in plants.

Answers

Answer:b

Explanation:

Answer:

moves particles from an area of low concentration to an area of high concentration.

Explanation:

edge

Which of the following is a
mechanical wave?
A. Sound
B. Light
C. Radio
D. Gamma Rays

Answers

It’s A. Let me know if you need a definition
Sound is a mechanical wave

How does the structure of DNA explain chargaff's rule?

Answers

Answer:

Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio (base pair rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine

Chargaff's Rule explains that in the natural DNA, the total number of guanine equals to the number of cytosine and the total number of adenine equals to the number of thymine. This tells about the base pair composition of DNA molecule.

What is Chargaff's rule?

Chargaff's rule states that in the DNA molecule of any species or organism, the total amount of guanine residues should be equal to the amount of cytosine residues and the amount of adenine residues should be equal to the amount of thymine residues. A stoichiometric ratio of 1:1 of purine and pyrimidine bases i.e., A + G = T + C should be fulfilled.

Chargaff's rule describes the ratio of the various nitrogenous bases present in the DNA molecule. It aids in the determination of the structure and composition of DNA in living organisms. It is constant for a species.

Learn more about DNA here:

https://brainly.com/question/10894314


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Scientists learn about the universe by studying the light that comes to Earth from stars and other objects in space. If you were a scientist hoping to understand the universe, what three questions would you ask?
50 POINTS MAKE IT FAST

Answers

Answer: Here's 4 so you can choose

How many stars are in space?

How far away from Earth are certain stars?

Are there other planets like Earth?

Could a large meteor ever strike Earth

Explanation:

is the earth round or flat

which of the following substances is formed during photosynthsis hurry please thx​

Answers

Answer:

Glucose

Explanation:

During photosynthesis plants produce a substance called glucose from simple inorganic molecules.

Hope this helps :D Have a fantastic day ^-^


Mass measures the amount of ______ in a substance
or an object.

a matter
b space
c gravity
d vapour

Answers

Answer:

theianswer to this is A. Matter

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