Which of the following situations
demonstrates a chemical change?
A. wood turning to ashes as it burn's
B. ice forming when water is placed in a freezer
C. sugar dissolving in a glass of hot
tea
D. a board becoming smooth as it is sanded

Answers

Answer 1
A. wood turning to ashes as it burns, because when something burns that is a chemical change
Answer 2
The correct answer is A

Related Questions

Maggots get their energy by breaking down dead and decaying animals. What are maggots? autotrophs producers decomposers heterotrophs.

Answers

Food is the source of energy that is used by the organism for the process of metabolism. Maggots are the larva of flies and depend on dead and decaying matters.

Maggots are:

Option C. Decomposers

This type of organism can be explained as:

The organism is classified into different classes according to the nature of its feeding habits.

Autotrophs are called the primary producer and break inorganic compounds into organic for energy.

Producers are the organism that produces their food by converting solar energy into chemical energy.

Decomposers are small-sized organism that lives in soil and breaks the organic compound of dead and decayed bodies.

Heterotrophs are organism that depends on other sources and producers for energy.

Therefore, maggots are decomposers.

To learn more about decomposers follow the link:

https://brainly.com/question/1100031

Answer: C- Decomposers

Explanation:

quiz

what compares nucleic acids and carbohydrates

Answers

Answer:

D. They both contain carbon, but only nucleic acids contain phosphorous.

Explanation:

Find the final amount of money in an account if $9, 100 is deposited at 6.5 % interest compounded

quarterly (every 3 months) and the money is left for 7 years.

Answers

Answer:

you will have a negitative amount

Explanation:

so there is 12 mounths in a year divided by 3 is 4 then times by 7 is 28.

so then 9,100 times .065 is 591.5 that is how much mony goes in the 3 months. Then you do 28 x 591.5 =16562 so you wont have any money left you will actually be in the negitatives.

Hoped that leped:P

If brown hair is dominant and red hair is recessive, what are the possible genotypes for Sally is she has brown hair?

Answers

Answer:

the answer is BB, Bb

Explanation:

If brown hair is dominant you need to consider the fact that it cant be bb otherwise she would have red hair because lowercase genotypes mean recessive. this eliminates the first and third answer leaving you with the second and fourth answer and we can eliminate the second answer because it says "what are the possible genotypes" meaning we need to list all the possible answers which leaves you with the fourth option.

A student observes the night sky in July with a telescope. The student does not see the constellation Canis Major.

Why is Canis Major missing from the night sky in July?


Canis Major moves around Earth.

Canis Major moves around Earth.

Canis Major moves around the Sun.

Canis Major moves around the Sun.

Earth rotates on its axis, and the Moon blocks Canis Major.

Earth rotates on its axis, and the Moon blocks Canis Major.

Earth orbits the Sun, and the Sun blocks Canis Major.

Answers

Answer:

You can only see it in December through March

Explanation:

The Canis Major can only be seen during the Winter season.

Which units can be used to measure length or distance? Check all that apply.

Answers

Answer:

what are the options?

Explanation:

we dont know what the units are lol

Which energy substance is a DIRECT source of energy used by the body to perform a multitude of functions, such as muscle contraction

Answers

Explanation:

the answer is; carbohydrates ...turn to ATP..

carbohydrate, example/ fruits, some veggies, real fruit juices..

processed sugar only works for a short time, due to the fact it is absorbed quicker than proteins.

your muscle depends on carbs, along with some proteins for energy. ATP is the end result is that cells can absorb ATP for immediate energy..Any extra is stored in adipose tissue for later use.

How does your body respond to an increase in the waste products of energy production

Answers

Answer:

body improves energy to make our body is healthy to have related fitness it's actually improve muscles , immunity , physical related fitness to being strong and proper food and exercise every day . I increased more fats and sugary food

The products from cellular respiration are the reactants in which other chemical process?
A. anaerobic respiration
B. photosynthesis C. Krebs cycle
D. fermentation

Answers

Answer:

B

Explanation: Photosynthesis

exchange of gases in the human breathing system takes place in the?​

Answers

Answer

alveoli

Explanation

During gas exchange oxygen moves from the lungs to the bloodstream. ... This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

Required Answer :-

The exchange of gases takes place in the alveoli.

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Additional information :-

Alveoli are microscopic air sacs.

They are the primary sites of exchange of gases. Gas exchange also occurs in lungs and tissues by diffusion.

Atmospheric air contains little CO2, but blood flowing in pulmonary capillaries has a higher concentration of CO2.

CO2 diffuses from higher concentration in blood across walls of alveolar capillaries to lower concentration in air in alveoli.

Blood coming into pulmonary capillaries is oxygen poor and alveolar air is oxygen rich.

Oxygen diffuses from higher concentration in alveoli across walls of alveolar capillaries to lower concentration in blood.

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

Hope it's helps !!

Hello! I need help pls

Answers

Answer:

I believe it's c hope this helps and I'm sorry if it's wrong

Explanation:

what are the five functions of the skeletal system?

Answers

Explanation:

protection of internal organsbody support blood cell formation endocrine regulationstorage of mineral and fat

a scientific study shows that for every 1 hour of studying that a student does their grade on the test improves by 20% what is the independent variable

Answers

The hours of studying is the independent variable. Independent variables are “the things I change” in the experiment

4
1
Which of the following lines does not pass
through the north and south poles?
A prime meridian
B equator
C 90-degrees W longitude
D International Date Line

Answers

The Equator line does not pass through the north and south poles. This line divides the Earth's planet into two hemispheres.

The Equator can be defined as an invisible line located at the center of the Earth (0 degrees latitude).

This invisible line (Equator) divides the Earth into two hemispheres: the northern hemisphere and the southern hemisphere.

The Equator is a circle of latitude, and the distance of this imaginary line is approximately 40,000 km in circumference.

Learn more about the Equator line in:

https://brainly.com/question/16876469

Bob has brown hair and Sally has blonde hair. If brown hair is dominant and blonde hair is recessive, is it possible for Bob and Sally to have a blonde-haired child? Use the GENOTYPE of each parent to EXPLAIN your answer.

Answers

Answer:

Yes

Explanation:

Bob (BB) Sally (bb) = spawn (Bb) Brown is dom resulting in a brown hair Spawn.

Are there any parts of the human body that get oxygen directly from the air and not from the blood?

Answers

Answer:

The Cornea

is the answer

how is it possible that plants can express firefly genes?

Answers

Plants have the recessive firefly genes in their DNA. Proteins are engineered into genes in the DNA of other organisms. All organisms contain DNA and RNA.

The diagram below represents a plant cell in tap water as seen with a compound light microscope.
Which diagram best represents the appearance of the cell after it has been placed in a 15% solution for two
minutes?
SOS
(1)
(2)
(3)
(4)

Answers

Answer:

(3)

Explanation:

I believe 3 would be the answer here because when interacting with a salt solution, plant cells will look like that. Hope this helped!

Diagram 3 of the cell will represents cell's appearance after being kept in 15% salt solution.

This will happen because of exosmosis in which the water will move out of the cell causing to to get shrink called plasmolysis

What is osmosis?

It is the process of movement of solvents through a semi- permeable membrane from region of lower solute concentration to higher solute concentration.

There are three types of osmosis:-

Isotonic:- The solutions bring compared have equal concentration of solutesHypotonic:- The solution with lower concentration of solutesHypertonic:- The solution with higher concentration of solutes

To know more about osmosis here

https://brainly.com/question/1799974

#SPJ2

Climate change caused by natural disasters cannot have a negative impact on ecosystems. Please select the best answer from the choices provided T F

Answers

Its false because climate change can still effect us, even if it’s natural.

Answer:

FFFFFFFFFFFFFFFFF

Explanation:

trust i got it right on the test have a wonderful day :)))

why is energy from the sun stored in the chemical bonds of glucose

Answers

Answer: Explanation: The solar energy is transferred to chemical energy during photosynthesis and stored in glucose molecule. The glucose molecule is broken down into carbon dioxide and water by undergoing a series of reactions in aerobic respiration. ... The energy is stored in energy rich phosphate bond of ATP molecule.

which type of connective tissue has a mineralized different matrix?

Answers

Answer:

Bone

Explanation:

Identify what phase of the menstrual cycle is described by each of the statements below.

21.After ovulation occurs, the follicle develops into a hormone producing structure called the corpus luteum.
______________

22. Fertilization is possible on this phase.
______________

23. In this phase, the lining of the uterus starts to grow, or proliferate due to the hormone estrogen.
______________

24. In this stage, the thick lining of the uterus will slough off and will be eliminated from the body.
______________

25. In the process, another hormone causes the follicle to rupture and release an egg (also called as oocyte).
______________​

Answers

Answer:

21. Follicular phase

22. Ovulation phase

23. Follicular phase

24. Menstrual phase

25. Follicular phase

Explanation:

I think it’s self explanatory but if you have more questions just ask in the comments

Which best describes stellar equilibrium?

Answers

C) The core contains equal amounts of hydrogen and helium

Please help
4.___are essentially molecules of DNA.

The ____theory accounts for the method by which a molecule of DNA makes a
copy of itself.

Answers

Answer:

Nucleotide

DNA replication

Explanation:

Passive transport move molecules without

Answers

Answer:

Passive transport moves molecules without energy

Explanation: hope this helps plz make brainlist

Why is meiosis important for sexua
reproduction?

Answers

Answer:

Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.

what is the answers Which sampling method is most suitable in calculating the population of mushroom on a field?
Pitfall trap
Pooter
quadrat
net​

Answers

Given what we know, the sampling method most suitable in calculating the population of mushrooms on a field is the quadrat.

What is the quadrat?A quadrat is a method used to directly count the number of an organism in a specific portion of a region. It is often used to get an estimated value as to the population density of the organism in the region.

Therefore, given the task at hand as well as the use of a quadrat, we can confirm that the most suitable method in calculating the population of mushrooms on a field is the quadrat.

To learn more about quadrat visit:

https://brainly.com/question/7869679?referrer=searchResults

PLEASE HELP ILL GIVE BRAINLIEST

Review

1. Describe the structures of the chloroplast where photosynthesis takes place.

2. What would happen if the stomata of a plant leaf were glued shut? Would that plant
be able to perform photosynthesis? Why or why not?

3. What are the reactants needed to perform photosynthesis? The products?

4. What happens to the products of photosynthesis?

Answers

Answer:

In plants, the process of photosynthesis takes place in the mesophyll of the leaves, inside the chloroplasts. Chloroplasts contain disc-shaped structures called thylakoids, which contain the pigment chlorophyll. Chlorophyll absorbs certain portions of the visible spectrum and captures energy from sunlight.

The plant leaf would not be able to perform photosynthesis. The leaf needs to have its chloroplasts facing the sun, so that they can absorb the sunlight to perform photosynthesis.

During photosynthesis, light energy converts carbon dioxide and water (the reactants) into glucose and oxygen (the products).

During the process of photosynthesis plants break apart the reactants of carbon dioxide and water and recombine them to produce oxygen (O2) and a form of sugar called glucose (C6H12O6). The oxygen will leave the plant through the stomata and enter Earth's atmosphere.Explanation:

What is the term used to describe when a molecule moves into the cell through a
transport protein but does not require energy to do so?
a) facilitated diffusion
b) osmosis
c) active transport
d) filtration

What’s the correct answer

Answers

A) facilitated diffusion :)

plants undergo both photosynthesis and respiration. which statement correctly compares photosynthesis with respiration?

Answers

Answer:

Oxygen and carbon dioxide

Explanation:

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