sharpening a pencil, cutting a piece of paper and folding the piece of paper are examples of...
A. chemical change
B. physical change

Answers

Answer 1

Answer:

the answer is b: physical change

Answer 2

Sharpening a pencil, cutting a piece of paper and folding the piece of paper are examples of [tex]\sf\purple{physical \:change}[/tex].

B. physical change

Physical change is defined as change in one or more physical properties of matter without any change in it's chemical properties. Since the chemical composition of the above are not altered, they are examples of physical change.

[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning}}{\orange{.}}}}}[/tex]


Related Questions

water moving along the ground, into and including rivers
and streams.
is it
Transpiration
Infiltration
Percolation
Surface runoff

Answers

Answer:

surface runoff is the answer

surface runoff is the definition

What stage of mitosis is depicted by the image above?
O metaphase
telophase
O prophase
O anaphase
cytokinesis

Answers

Answer:

telophase

Explanation:

because the chromatids are pulled to the opposite sides

can someone help me??

Answers

Answer:

2

Explanation:

because you don't selective breeding to weak gene.

hope this help u to understand:)

Teeth of herbivores are always..................................

Select one:

a.

pointed and help them grinding plant

b.

Flat for grinding plant

c.

sharp for tearing meet​

Answers

it would be b, it would be pointy for meat not plants

A concentration of nerve cells in one area is called ?


no links

Answers

Answer:

neuron

Explanation:

In the peripheral nervous system a bundle of axons is called a nerve. In the central nervous system a bundle of axons is called a tract.

Gametes produced by the parents are shown along the __________________ and _______________ sides of the Punnett square.

Answers

Answer:

Vertical and horizontal

Explanation:

A punnet square is a tabular chart used in genetics to display the genotypic composition of the offsprings of two parents. To construct a punnet square, the alleles of the gametes produced by the parents is required.

The gametes produced by each parent via meiosis are placed along the vertical and horizontal sides of the punnet square. For example, if a cross occurs between two parents with the following genotype: AaBb and AAbb. The parents will produce the following gametes:

AaBb - AB, Ab, aB, ab

AAbb - Ab, Ab, Ab, Ab

These gametes produces by each parent will be placed along the sides (vertical and horizontal) of a punnet square to determine the genotype of the offsprings that will be produced.

ow do cells use food to make energy and maintain homeostasis

Answers

Answer:

Cells obtain energy through the process of cellular respiration. It is a metabolic process of conversion of the biochemical energy from the nutrients into adenosine triphosphate (ATP). ... They exchange substances with the new cells and also eliminate the wastes thereby maintaining homeostasis.

Explanation:

There are several ion transport mechanisms within the cell membrane that function to maintain proper levels of solutes inside and outside the cell. ... This system uses the energy stored in ATP to pump potassium into the cell and sodium out of the cell.

Assume that the sequence of bases in one strand of DNA molecule is a GACTTACGTACC what is the sequence of complementary bases in the other strand of DNA during DNA replication

Answers

Answer: CTGAATGCATGG

how can you differentiate between littoral zone and limnetic zone in a pond ecosystem ?​

Answers

Explanation:

The limnetic zone is the open and well-lit area of a freestanding body of freshwater, such as a lake or pond. Not included in this area is the littoral zone, which is the shallow, near-shore area of the water body.

All prokaryotes are _________ eukaryotes
More complex than
Smaller than
Larger than
Similar in size to

Answers

Smaller than eukaryotes

what is the function of chromosomes

A- regulating the production of specific proteins
B- producing energy through metabolism
C- transmitting electrical signal through the body
D- controlling the rate of cellular division

Answers

D- controlling the rate of cellular division

help with all of them please ​

Answers

Quizlet has answers to the test just type the test name in

PLEASE PLEASE ANSWER FAST PLEASE
what are the most common c0vId vaccine myths and how did they start? Explain your answer.

Answers

Answer:

The most common myths are:

- C0vid2019 vaccines cause autism  

- C0vid2019 vaccines may modify your DNA

- C0vid2019 vaccines are unsafe

Explanation:

The most common myths associated with C0vid2019 vaccines are:  

1- C0vid2019 vaccines may cause autism: In 1998, Andrew Wakefield and colleagues published a controversial study in the Lancet where they suggested that the measles, mumps, and rubella (MMR) vaccine may cause autism in some children. However, it has been showed that this study was based on erroneous statements and therefore this publication was retracted.

2- C0vid2019 vaccine may modify your DNA: it has been suggested that vaccines based on viral vectors (e.g. adenoviruses) and mRNA vaccines may modify the DNA of cells. This statement is false because these technologies cannot alter the DNA sequence. These vaccines are based on the production of an mRNA sequence that is translated into a viral protein (spike protein) which triggers an immune response

- C0vid2019 vaccines are unsafe: some people believe that C0vid2019 vaccines are unsafe because they were developed quickly. However, this statement is false because all vaccines (including C0vid2019 vaccines) need to follow rigorous safety standards to be approved by governmental agencies (i.e., they approved all clinical trials).

how does the nervous system communicate with other parts of the body?

Answers

The central nervous system (CNS) is composed of the brain and the spinal cord. The central nervous system communicates with the rest of the body by sending messages from the brain through the nerves that branch off of your spine.

Explanation:

The central nervous system communicates with the rest of the body by sending messages from the brain through the nerves that branch off of your spine. You are able to move your body

number the steps for using a microscope to view a slide order from 1-11

Answers

can u zoom in cant see it

Identify ALL of the functions of proteins. Structure and is found in tendons, bones, and ligaments. Communication and works as chemical messengers such as hormones. Defense as in antibodies. Transportation and are embedded in the cell membrane to allow substances to move across the cell membrane. Enzymes that lower the activation energy of a reaction. Contraction to allow muscle and cell contraction/movement. Eicosanoid such as in regulation of blood pressure or inflammation. Steroids such as cholesterol. Glycogen for energy storage in muscles.

Answers

Answer:

Structure and is found in tendons, bones, and ligaments.

Communication and works as chemical messengers such as hormones.

Defense as in antibodies.

Transportation and are embedded in the cell membrane to allow substances to move across the cell membrane.

Enzymes that lower the activation energy of a reaction.

Contraction to allow muscle and cell contraction/movement.

Explanation:

Proteins serve many functions in living organisms.

Structure: The most abundant protein in mammals is collagen and is found throughout the body. In a major component of connective tissue such as skin, ligaments, and tendons providing strength and elasticity to these tissues. It is found also mineralized in bones and teeth.

Proteins function as hormones which are chemical messengers that mediate many cellular responses in the body. For example, the hormone insulin is a protein.

Proteins functions in the body's immune system as antibodies which recognize and initiate immune responses against diseases. The immunoglobulin such as immunoglobulin A and G are proteins.

Proteins serves as transporters to move substances across the cell memebrane. Some are found as peripheral or integral membrane proteins. Examples of transport proteins are the glucose transporters, Glut-1, Glut-2 and Glut-4 transporters.

Enzymes are proteins which catalyse the chemical reactions tanking place in an organisms. Various enzymes in the body include the hydrolases, the ligands, the leases, etc.

Contraction of the actin filaments of the muscle which are proteins, allow muscle and cell contraction bringing about movement.

A Note on the other options.

Eicosanoids are lipid molecules which serve various functions such as in regulation of blood pressure or inflammation.

Steroids such as cholesterol are lipid-derived molecules.

Glycogen for energy storage in muscles is a storage form of glucose, a carbohydrate.

Name three factors that can result in a decrease in the size of a population

Answers

Answer:

birth rate,death rate, immigration and emigration

The four most fundamental factors that contribute to the decrease of size in population is birth rate, death rate, immigration, and emigration.

How do scientists think Prokaryotic Cells contributed to changing Earth’s atmosphere to include more oxygen?

Answers

Explanation:

Then, about 2.5 billion years ago, oxygen started getting added to the atmosphere by photosynthetic cyanobacteria. “Oxygen is produced as a waste product of photosynthesis. ... “The production and burial of plant matter over long periods causes oxygen levels to rise,” explains Poulsen

Bacteria use this form of reproduction.

A. Asexual reproduction
B. Sexual reproduction
C. Both of them​

Answers

Answer:

A asexual reproduction

Do sex-linked traits that originate from mutated genes found on X chromosome affect one sex more than the other? why/why not

Answers

Ew sex don’t even ask that kind of question

Which technological tool helps earth scientists gain new knowledge about earth’s subsurface?
Group of answer choices.

A. Global positioning system

B. Digital balance

C. Ground penetrating radar

G. Hydrometer

Answers

Answer:

ground penetrating radar

Ground penetrating radar technological tool helps earth scientists gain new knowledge about earth’s subsurface. Thus the correct option is C.

What is Ground penetrating radar?

Ground penetrating radar detects non-metal and metal objects, as well as voids and underground irregularities. It makes possible to measure the depth, dimensions, thickness of targets. It provides data quickly and can cover a large site area.

Ground penetrating radar can go deep up to 100 feet (30 meters) in low conductivity materials such as dry sand or granite. Moist shale, clays, and other high conductivity materials, may attenuate or absorb GPR signals, greatly decreasing the depth of penetration to 3 feet (1 meter) or less.

For more information regarding ground penetrating radar, visit:

https://brainly.com/question/6069534

#SPJ2

IVO
1. (12.01 LC)
What is an example of a physical characteristic that scientists use to group animals?(2 points)
A. Has feathers
B. Lives on land
C. Has a social language
D. Takes care of their young

Answers

cevap b yap Hadi çabuk lenlenlen

I believe the answer is A.

7. How does your respiratory and circulatory systems attempt to maintain homeostasis
during exercise?

a. Your body produces more red blood cells to help provide energy to cells.

b. Your lungs produce more oxygen which is then delivered to the cells through the
blood.

c. You experience an increase in blood flow which provides nutrients to cells to
increase energy and remove wastes.

d. You experience an increase in breathing rate to obtain more oxygen which is
delivered to cells through the bloodstream.

Answers

Answer:a

Explanation:

The concept of _________________ has ensured that economic and environmental conditions in different countries are related and linked.

Answers

Answer:

Globalization

Explanation:

Globalization can be defined as the strategic process which involves the integration of various markets across the world to form a large global marketplace. Basically, globalization makes it possible for various organizations to produce goods and services that is used by consumers across the world.

Some examples of international economic organizations involved in global economy and trade are;

I. World Trade Organization (WTO).

II. United Nations (UN).

III. International Monetary Fund (IMF).

IV. United Nations Conference on Trade and Development (UNCTAD).

In conclusion, the concept of globalization has ensured or made it possible such that economic and environmental conditions in different countries of the world are related and linked with the intention of generating revenue and profits while providing goods and services to meet the demands or requirements of various consumers across the world.

Answer:

Globalization

Explanation:

The concept of Globalization has ensured that economic and environmental conditions in different countries are related and linked.

'Complete the diagram to show the results you would see at 40°C and 60°C'

Answers

Answeryeah it’s that one

Explanation: yup, definitely that one.

In his journey to the Galapagos Islands, Charles Darwin was amazed by the variation in the characteristics of plants and animals he encountered. In any habitat, food can be limited and the types of foods available may vary. One year, there was no rain on these islands. Many plants failed to bloom and produced no new seeds. This left mostly large, tough seeds for the finches to eat. Describe one change in beak characteristics that would most likely occur in the finch population after many generations if this change in seed size became permanent.

Answers

Beaks would become longer or sharper

Cual es mi nota 80\68.Panama

Answers

Explanation:

81.

pasando los 50 puntos de la segunda parte ya se considera un punto más.

A seed, known as "pinhão", is the great evolutionary novelty that is present in Gymnosperms plants. Choose the correct affirmative sentence related to seeds.

Answers

Hi. Unfortunately, you didn't show the answer options, which makes it impossible for me to answer your question. However, I'm going to give you some general information about seeds that can help you find the right answer. Hope this helps you.

Seeds are structures responsible for plant proliferation. They exist only in gymnosperms and angiosperms and are absent in bryophytes and pteridophytes. All seeds are formed in the ovary of flowers as a result of the plant fertilization process.

All seeds are formed by three structures known as integument, nutrient and embryo. The embryo is what gives rise to another plant, which will grow after the seed is planted and germinates. Nutrients will be responsible for meeting the needs of the new plant during the beginning of its development. The integument, in turn, has the function of protecting the embryo.

Explain how the cell division of cancer cells like these are misregulated. Identify genetic and other changes that might have caused these cells to escape normal cell cycle regulation

Answers

Answer:

Due to non-functioning of protein.

Explanation:

The cell division of cancer cells like these are misregulated because they can't be control by the proteins that is responsible for the control cell division. The cancer cells can multiply without any growth control factors, or growth-stimulating protein signals that control its growth. There are some proteins that is responsible for control of cell division but due to mutation that protein of substance stop working and the cancer cell grows uncontrollable.

Explain how you can use a pattern of clapping sounds to transfer information. PLS HELPPPPPPPP.

Answers

Answer:

You can use Morse code to transfer information

Other Questions
Is (9, 7) a solution to this system of inequalities?x + y 77x 4y > 4 A school uses the function p(t)=t220t+175 to model the profit (in dollars) expected in a weekend when the tickets are sold at a certain price, t, to the school musical go on sale a. Write an equation to find out the prices at which the school would earn $100 in profit from the school musical each weekend. b. Find out at what prices the tickets should be sold at to make a $100 profit each weekend. SHOW ALL WORK. Describe one of the problems of the Church that led to reform. soloman is given a 25% discount on a bike priced at $460.00 how much will soloman pay for the bike Which food was one of the first recognized for its ability to reduce blood cholesterol and the risk of heart disease Speech final!!! A good speech has three main points, true or false? What is the opposite of dividing by 21? A. dividing by 21 B. multiplying by 21 C. subtracting 21 D. adding 21 Please help!! Can you tell me the answers for number 4, 5, and 6?I'll give you 5/5 stars, thanks, and the brainliest!!!!! PLEASE HELP MEEE what is Mr m's full name plz answer will give brainliest Tuberculosis, a respiratory infection is often caused by AIDS?TrueFalse Find surface area of the prism. Thanks. A child is born with hemophilia (inherited as an X-linked recessive) and Klinefelter's syndrome to parents who both have normal blood clotting. In which parent (mother or father) and during which round of meiosis (I or II) did the nondisjunction event occur The Doppler shift involves a shift in the ___________________. Check all that apply. Group of answer choices actual intensity produced by the source of sound actual frequency produced by the source of sound the perceived pitch of sound observed by a listener the loudness of sound observed by a listener none of these Which is the best definition of the term outsource? Can someone pls help Ill mark brainliest 2The height in meters of a projectile involves the object's initial height,upward velocity, and acceleration because of gravity. If the equationy =- 9.8t + 109.7t + 7.4 models the number of meters, y, a toy rocketis above the ground t seconds after being launched, what does the 7.4represent? Help me with with all of this 27 points A rectangular block of wood measures 5 inches wide. Over time, the width of the block of wood will shrink by 5%. A builder lets the block ofwood shrink. He wants to use it to fill a gap that measures 3.5 inches wide.How much does the builder need to cut off the wood block so that it will fit exactly in the gap? Enter the answer in the box. (Part 2) PLZ HELP this is due today:(