What do these two changes have in common?

saliva breaking down a piece of bread

a penny tarnishing

Select all that apply.

both are caused by heating
both are chemical changes
both conserve mass
both are changes of state

Answer: both are changes of state and both are changes of state

Explanation:

.

The two changes like the Saliva breaking down a piece of bread and a penny tarnishing involves chemical change. Thus, the correct option for this question is B.

A Chemical change may be defined as a type of change that significantly involves the production of new substances from old ones by combining each other with different properties.

The action of saliva is stimulated by the action of the enzyme salivary amylase which hydrolyzed the starch into maltose, a disaccharide. A penny tarnishing involves the dissolution of copper oxide in a mixture of weak acid and table salt.

Therefore, the given two changes have in common that both are chemical changes. Thus, the correct option for this question is B.

To learn more about Chemical changes, refer to the link:

https://brainly.com/question/783768

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20 POINTS!

1. The four types of tissue in the body are epithelial, connective, muscle, and nervous.
True | False
2. Muscle tissues are bundles of muscle fibers that are arranged in perpendicular lines.
True | False
3. Epithelial tissues act as a supporting framework for most organs of the body.
True | False
4. The nervous tissue is composed of three main parts: nerves, the spinal cord, and the brain
True | False
5. Epithelial tissues are found in body surfaces, line body cavities, and hollow organs.
True | False
6. Cardiac muscle tissue is a specialized, organized type of tissue that only exists in the heart and the lungs.
True | False
7. The epidermis, or the outermost layer of the skin, is an example of epithelial tissue.
True | False
8. Neutrons are cells of the nervous system that conducts nerve impulses.
True | False
9. Connective tissues are found in between other tissues everywhere in the body.
True | False
10. Muscle tissues are classified into cardiac, epidermal, skeletal, and smooth.
True | False

1. All energy originates from the _____.

2. Energy cannot be lost or gained, as described by the law of conservation of _____.

3. Glucose is potential energy stored as _____.

4. When potential energy moves across a cell membrane, it becomes _____.

5. Plants store chemical potential energy as _____.

6. Stored chemical energy is released in the _____.

The Guam rail is a flightless bird found on the island of Guam. It builds a shallow nest on the ground and lays eggs throughout the year. There are no native species of snakes in Guam, so the Guam rail had no experience with snake predators until the brown tree snake was accidentally introduced sometime between 1944 and 1952. These snakes, which eat a wide variety of animal species, quickly established a large population on Guam.
How was the Guam rail most likely affected by the introduction of the brown tree snake?

A) The brown tree snake ate only species that lived in trees, so it had no effect on the Guam rail.
B) The Guam rail quickly developed the ability to fly in order to escape from the brown tree snake.
C) The population of the Guam rail declined, and the species nearly became extinct. D) The Guam rail began to build its nests in trees.

Which of the following is the correct order of the categories in the modern system of classification?

A. domain, kingdom, class, phylum, family, order, genus, species
B. kingdom, phylum, class, domain, order, family, genus, species
C. domain, kingdom, phylum, class, order, family, genus, species
D. phylum, kingdom, order, class, family, species, genus, domain

How would an animal feel after they hibernate?

A:Tired
B:Fat
C:Hungry
D:Warm
Please don’t do links and please try YOUR best I won’t be angry if u get it wrong at least u tried ur best thank you

1. How might the behaviors of bears change over time if they continue to be bred in captivity?
2. Why do you think humans’ muscles relax when they’re sleeping? What could happen if they did not relax during their sleep?

3. What is a PRO of asexual reproduction?

4.What kind of organisms are corals? What adaptations do they have to help them eat?

5.Why are adaptations important for a species?

Imagine that Earth begins to rotate more slowly. How would this affect a solar day? A sidereal day?

Ok y'all, I need help and ill give brainliest :,)

What makes eubacteria different from archaebacterial?


Archaea has cytoplasmic protein and histone, while bacteria does not


There are no differences between the two domains


Archaea lacks a nucleus while bacteria has a nucleus


Archaea is prokaryotic and bacteria is eukaryotic

do u ever wanna be left alone but u cant?

1.How did robert hooke contribute to cell theory?
2.How did roberty hooke contribute to germ theoty of disease?
3. .How did anton van leeuwenhoek contribute to cell theory?
4.How did anton van leeuwenhoek contribute to germ theoty of disease?

Someone please answer theses 2 questions PLEASE

What causes the different colors of visible light in the electromagnetic spectrum?
A. Different wavelengths
B. Different amplitudes
C. Different frequencies
D. Different speeds

In the United States, there has been an increase in the number of people infected by mosquito-spread diseases that were previously found only in countries south of the United States. Scientists want to investigate the cause of the increase in mosquito-spread diseases. Scientists have predicted that the mosquitos carrying disease have moved further north as global temperatures have increased.

Which questions would help investigate how the new mosquitoes are affecting the ecosystems of the United States? ***Select all that apply***.
A. Have the natural predators to the mosquitoes also migrated north?

B. Are places in the United States using more pesticides to kill the new mosquitoes? If so, how are these pesticides impacting others in the ecosystems?

C. How have the food webs in the United States changed as a result of the new mosquitoes?

D. What types of organisms are preying on the mosquitoes in their new habitats?

E. How much money has been spent to fight the diseases caused by these mosquitoes across the globe?
GIVING BRAINLIEST

Our solar system contains eight planets. Each planet is classified as either a terrestrial planet or a gas giant planet. Which of the following is a difference between these two types of planets?

PLEASE HELP QUESTION BELOW....

What are echinoderms? What type of symmetry do they have?

Which step to preparing a pomegranate is shown in the photograph?

a.Cut off the crown and the opposite end of the pomegranate.
c.Use a colander to drain and slightly rinse the seeds.
b.Using a sharp knife, score the skin lengthwise.
d.Using your fingers, and keeping the pomegranate submerged, divide the seeds from the rind and from the skin.

Explain the following functions of a Lily Flower:

-Chloroplast
-Photosynthisis
-Seeds
-Roots

(Please only answer if you know what it is.)

I will give brainlest to the correct answer!

Answer all pls or put it in the comments..

The photo shows a plant that grows in a rain forest. Which feature of the leaves is an adaptation for obtaining energy? A. Their unique shape B. Their large size C. Their pointed tips D. Their short height

The first answer gets brainliest
Tell me for each picture if it's any of these things
Cell
Unicellular
Multicellular

Is it possible for parents with dominant traits to have offspring with recessive traits?

The best answer gets brainliest
What do you think the relationship is between a cell’s structure and its function?
No links, please :)

Why do biologists use indicator species?
O A. to compare freshwater and ocean ecosystems
O B. to monitor water quality and biodiversity
C. to count the number of organisms present
D. to analyze the dominant species

How does the support structure of echinoderms differ from that of arthropods?

1.) how are arthropods vital to fruit crops?

2.) how are earth worms important?

As a tornado passes across the farmland, it can blow away as much as 5cm of topsoil. What impact does this most likely have on the local ecosystem?

The hemoglobin of sickle cell anemia:

1. is oxygen rich
2. can carry less oxygen and more carbon dioxide
3. is normal
4. differs from the normal protein by one amino acid

The ability to move or operate is called *
O thermal energy
O Transfer
O energy
O collision
O equilibrium ​

A family wants to eat garden-fresh wheat, but they live in an apartment and don’t have a garden. They try a technique without using soil. How?