Everyday we observe chemical and physical changes in the matter around us. Which statement correctly describes a physical or chemical change? ( EXPLAIN WHY THE ANSWER IS CORRECT)

a. Physical changes create new compounds
b. Chemical changes break the bonds between atoms.
c. Chemical changes alter only the phase of a substance
d. Physical changes alter the composition of the starting materials.

Answers

Answer 1

Answer:. Physical changes create new compounds

Explanation:

i think


Related Questions

in most algae, certain fungi and higher green plant, main components of cell wall is​

Answers

Answer: Eukaryotic organisms, such as algae, fungi, and higher plants, have multilayered cell walls composed in large part of either cellulose or chitin . ... Cellulose microfibrils form the scaffold of all plant cell walls. brainliest?

Explanation:

what do ducks and snake have in common.

Answers

Answer:

they both can see behind them

Explanation:

why it is important to know the speed of earthquake waves, the strength of the waves and how do we determine the location of the epicenter of an earthquake. ?

Answers

Answer: As the P and S waves travel out from an earthquake the P waves get progressively farther ahead of the S waves. Therefore, the farther a seismic recording station is from the earthquake epicenter the greater will be the difference in time of arrival between the P and S wave.

2.A cell in a hypotonic solution​

Answers

Answer:

the cell will swell

Explanation:

the cell will swell as the concentration of solute is more in the cell than its solvent thus water will move inside the cell leading the cell to swell.

HELP PLEASE
How do ocean currents affect weather in different parts of the world?

Answers

Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.
The currents pull cold water from different parts of the world making it in some areas that are typically warm have spots of cold water in them. Also vise versa

A gene has 2 alleles, R & B, List the possible genotypes? I also need help with questions 5, 6, 7 and 8 please help! Pls look at the picture! I will mark whoever sounds best the brain! Ty!

Answers

Answer:

5.) The possible genotypes should be: RR RB BB ( if the could for the same proteins)

6.) Frequency of R: 0.5

7.)Frequency of R: 0.5

8.)Frequency of R: 0.375

Explanation:

5.) If R and B code for the different forms of the same protein then they are only a few possible out comes

6.) First calculate the total alleles in population

allele R= 40

Allele B=40

total allele = R+B= 40+40

=80

Now to find allele R frequency is:

(Total R alleles) / (Total allele in pop)

40/80=

0.5

7.)Calculate the total alleles

Alleles from for R

RR= 10

R=10x 2= 20

Multiply the value by 2 because there are 2 R alleles present in

RB=20

R=20

Number doesn't change there is only 1 R allele

Total R=20+20

=40

Alleles For B

BB=10

B=10×2

=20

Same thing here, two B alleles together so multiple by 2

RB=20

B=20

Total B= 20+20

=40

Total alleles in pop add

40+40

=80

Frequency of R

Total of R/Total Alleles

=40/80

=0.5

8.)Repeat the same thing in 7 but use different numbers

RR=10

R=10x2

=20

RB=10

R=10

Total R= 20+10

=30

Match the following organelles with their specific function.
_______________________

ribosome
mitochondria
chloroplast
lysosome
endoplasmic reticulum
vacuole
Golgi Apparatus
cytoskeleton
_______________________

1. make/assemble proteins


2. packages and processes materials to send


3. an organelle composed of a network for transport in the cell


4. powerhouse/plant or make energy


5. create energy from the sun


6. cleanup


7. storage


8. support and structure

Answers

Answer:

picture po plssssssss. para masagutan

Why do efforts to prevent all fires from occurring in forests actually tend to make these ecosystems more vulnerable to fire?

Answers

Answer:

they feed off of the efforts to control the fires on forests

Explanation:

they cause heat trapping for wildfires to grow. These patterns occurred in 1880 as a result, led multiple forest fires that were hard to control and over time increased chances of happening again.

PLZ help

Fuel-cell cars use hydrogen gas and release ___ into the atmosphere

A. Oxygen gas
B. Carbon dioxide
C. Fossil Fuels
D. Water vapor

Science (A P E X)

Answers

Answer:

D. Water vapor

Hope this helps!

Answer:

D water vapors

Explanation:

What is the function of dna ligase .

Answers

Answer:

I'm going with A

Explanation:

DNA ligate play an essential role in maintaining genomic integrity by joining breaks in the phosphodiesterase backbone of DNA that occur during replication and recombination, and as a consequence of DNA damage and its repair.

if u are good at science please help (biomass)

Answers

don’t click :) it’s a

which symptom is not included in the diagnosis of water intoxication?

Hyponatremia
Loss of electrolytes
Confusion
Cell shrinkage

Answers

Cell shrinkage will be the answer



2. An organism's paired chromosomes
arranged in order from largest to smallest is called

Answers

Answer:

Karyotype

Hope it helps!

Answer:

karyotype, autosomes or “body chromosomes

Which is not a factor that weather depends upon? Hours of daylight Air Temperature Air pressure Moisture

Answers

Answer:

Option A , Hours of daylight  does not affect the weather

Explanation:

The seven prime factors that affect the weather are

Temperature

Pressure

Moisture content

Speed and direction of air

Latitude

Ocean currents

Elevation and bodies of water.

Hence, option A , Hours of daylight  does not affect the weather

Explain the nitrogen cycle and water cycle in your own words


18 points will give Brainlyist!!!
HELP

Answers

Answer:

nitrogen fixation, nitrogen assimilation, ammonification, nitrification, and denitrification all in order

Energy flows into the producers of an ecosystem through the process of

Decomposition

Cellular respiration

Carbon fixation

Photosynthesis

Answers

Answer:

by the process of photosynthesis

what is helium plz answer , have a beautiful good morning:-).​

Answers

Answer:

Helium is a noble gas meaning that it has a full outer shell of valence electrons. It's not reactive because of this.

Explanation:

Which of these is an advantage of sporulation?
It produces large numbers of offspring.
It combines male and female cells.
It is a type of sexual reproduction.
It is commonly seen in yeast

Answers

A; When spores are released, there are a high number so that the parent can reproduce.

How can we improve energy efficiency in:
a. Industry?
b. Transportation?
c. Buildings?

Answers

Explanation:

a-3 ways to improve energy efficiency in industrial applications

Improve how applications are controlled. ...

Recover and reuse waste heat; and.

Improve maintenance programs to ensure critical equipment is functioning efficiently.

b-Corresponding to these three levels of energy efficiency in transport, three basis strategies exist to improve energy efficiency:

Avoiding increased transport activity and reducing the current demand for transport;

Shifting demand to more efficient modes of transport;

Improving the vehicles and fuels used.

c-There are three primary ways in which energy efficiency can be improved in residential, public, and commercial buildings: (i) through improved design and construction techniques that reduce heating, cooling, ventilating, and lighting loads; (ii) through building upgrades and the replacement of energy-using equipment; .

Answer:

C

Explanation:

beqause building work has very hard



16. Which of the following could describe a population that is decreasing
in size?
The birth rate and death rate remain the same
The death rate is becoming lower than the birth rate
The death rate is constant and the birth rate is increasing
The death rate is becoming higher than the birth rate

Answers

Answer:

The death rate is becoming higher than the birth rate.

Explanation:

Birth rate means the population increases, and death means decreases.

Answer:

The death rate becoming higher than the birth rate

Explanation:

if the death rate is becoming higher and the birth rate is getting lower then the population will die off and the birth rate would decress.

QUICKKKK. WILL GIVE BRAINLIST
Pls help. This is confusing.

Answers

It’s A. If the snakes were removed the mouse would have less predators so the population would INCREASE.

How is a genesis rock useful to humans?

Answers

Answer:

That sample, nicknamed the Genesis Rock, sample number 15415, was an anorthosite, a piece of the moon’s primordial crust. Geologists, hoping to learn more about the moon and its origins, selected the Hadley-Apennines landing site for precisely this reason. While not the oldest lunar sample brought back from the moon, geologists at the Manned Spacecraft Center (now known as the Johnson Space Center) later concluded that this rock was about 4 billion years old

Explanation:

IG SORRY IF ITS WROONG

Alzheimer's disease has some lifestyle factors because
everyone can contract it in their lifetime.
it can be influenced by nutritional choices.
up until now there is no known cure for it.
it can be contracted through germs.

ITS BBBBBBB!!!!!!!!!

Answers

Answer:

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

Explanation:

it b

Even before the Structure of DNA was solved, studies indicated that the genetic material must have the following propties

Answers

(Key Concept C) Even before the structure of DNA was solved, studies indicated that the genetic material must have the following properties: be able to store information; • be faithfully replicated and be passed on from generation to generation; and • allow for changes, and thus evolution, to occur. Hope this helps! Mark brainly please!

Answer:

Be able to store information

Explanation:

I just have a gut feeling that this is right, so hopefully this is right, well anyway have a nice day

In which of the following organisms did photosynthesis most likely first
evolve?
A. Algae
B. Prokaryotes
C. Plants
D. C4 plants

Answers

It’s B, since
Compared to prokaryotic organisms such as bacteria, plants and animals have a relatively recent evolutionary origin. DNA evidence suggests that the first eukaryotes evolved from prokaryotes, between 2500 and 1000 million years ago.

The following organisms did photosynthesis most likely first  evolve - B. Prokaryotes

Sufficient evidence indicates that eukaryotic photosynthesis originated from endosymbiosis of cyanobacterial-like organisms

ultimately these prokaryotes became chloroplasts in eukaryotic cells.So the evolutionary origin of photosynthesis is to be found in the bacterial domain.The geological record indicates that this transforming event took place early in Earth's history, at least 2450–2320 million years ago

Thus, The following organisms did photosynthesis most likely first  evolve - B. Prokaryotes

Learn more:

https://brainly.com/question/3529377

Red-eyed tree frog eggs can hatch up to two days earlier than average when they detect vibrations. However, if they hatch more than two days earlier than expected due to vibrations, the embryos are typically not developed enough to survive outside of the egg. Explain how natural selection inhibited frog eggs from hatching any earlier than two days before expected hatching. Explain your answer in 1–2 sentences.

Answers

Natural selection inhibited the eggs from hatching before expected because this trait is negative in terms of survival and reproduction.

How does natural selection work?

Natural selection is a natural process that causes evolution over time. This mechanism implies only individuals with traits that represent an advantage for survival and reproduction will prevail over time, which causes the traits of these individuals to become dominant.

For example, if in a population of deer male deer with big antlers are more likely to survive and reproduce, it is expected after some generations this trait is dominant.

How does natural selection work in the red-eyed tree frog case?

In this situation, we know that if an egg hatches before time the embryo is not likely to survive. This means this trait is a disadvantage in terms of survival and reproduction, and due to this and as a result of natural selection the trait is not dominant.

Learn more about natural selection in: https://brainly.com/question/2725702

The part of the brain that helps you keep from falling is the _______.

Answers

Cerebellum is part that helps us keep from falling.
The Brainstem helps to keep you from falling

Define fossilisation

Answers

Answer: A fossil is any preserved remains, impression, or trace of any once-living thing from a past geological age.

Explanation:

Question is specific and clearly
connects the relationship
between carbon dioxide (CO)
and temperature

Answers

Answer:

The Temperature rises as carbon dioxide levels rise. The temperature decreases when the carbon dioxide concentration falls.

Explanation:

A tiny part of the correlation is attributable to the relationship between temperature and carbon dioxide solubility in the surface of the ocean, but most of it is consistent with feedback from carbon dioxide to the environment. These changes are expected to be consistent with Earth's radiative balances and the function of greenhouse gases in climate change. While determining the cause and impact, initially or by some other method, between carbon dioxide and climate, may appear straightforward, it still is extremely difficult to find the cause and effect. Other changes include altered vegetation, earth surface properties, and ice-sheet extent in the glacial climate.

Other paleoclimate representatives allow us to comprehend the role of the oceans in climate change in the past and future. The ocean holds 60 times as much carbon as the atmosphere, and the change in carbon dioxide in the atmosphere is predicted throughout the past several hundred thousand years to be compared to carbon changes in the ocean. While oceans vary far more slowly than the atmosphere, in past CO2 fluctuations the ocean has played a key role and will play a part for millennia in the future.

Finally, paleoclimate data demonstrate that there is not only temperature about climate change. In the past, many other aspects of the climate have altered as carbon dioxide has changed. The snow was lower, the continents dried and the tropical mousses weaker during the glacial ages. Some of these changes may be independent; others may be closely associated with changing carbon dioxide levels. A thoroughness of research is to understand what these changes might occur in the future and how substantial these changes may be.. The Paleoclimatology Program of the NOAA provides scientists with a documentation of previous changes as an approach to understanding future climate change.

Nervous tissue would allow the signals to travel. Because of the branches between the cells in this tissue, the cells can easily send a message from one cell to another.

Answers

Answer:

glial cells

Explanation:

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