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.
What do you mean by Chemical change?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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How are plants dependent upon the abioitc factors (3) of their habitat? (Identify the three abiotic factors and what they are needed for)
Answer:
Carbon dioxide, water, and sunligt
Explanation:
Carbon - The air plants breath to live.
Water - Gives them something to drink.
Sunlight - Helps them grow.
Carbon, water, and sunlight - To make their own food, which is glucose aka sugar.
NEED ASAP
Why do you think it’s necessary for meteorologists (weather scientists) to study multiple types of data when
predicting upcoming weather? Which types of data are important?
A beryllium atom contains 4 protons, 4 neutrons and 4 electrons. What is the atomic number of beryllium?
Answer:
Beryllium's atomic number is 4
Explanation:
Reason
Beryllium has 4 protons, 4 neutrons, and 4 electrons.This makes it a nuetral atom meaning that it contains an equal amount of protons and electronsThis means that beryllium has a atomic number of 4Answer:
the atomic number 4
Explanation:
An egret lives near cattle and eats insects stirred up by the cattle's grazing.
a. Neither
b. Commensalism
Could someone do this for me since I have a lot of work for other classes
Answer:
Asteroid-small,rocky objects that orbit the sun
Axis-a real or imaginary line that something rotates on
Comet-cosmic balls of frozen gasses,rocks,and dust that orbit the sun
Diameter-a straight line that runs from one side of a figure and passes through the middle
Gravity-an invisible force that pulls objects towards each other
Kuiper Belt-an icy ring of frozen objects just outside of the planet Neptune’s orbit
Latitude-the measurement of distance north or south of the equator
Orbit-a regularly repeated path that one object in space takes around another
Revolution-the action of a celestial body going around in an orbit;the time taken by a celestial body to make a complete orbit;the rotation of a celestial body on its axis
Rotate-the process/act of turning or circling around something
Rotation-the action/process of rotating on/as if on an axis or center
System-a group of related things that work together as a whole
Theory-a plausible or scientifically acceptable principle/body of principles offered to explain something
Does the plant cell or animal cell have a larger vacuole?
Answer:
Plant cell
Explanation:
The plant has the largest vacuole than animal cells because in plant cells the larger central vacuole performs two functions, one is to store water and the other is to help the plant remain upright.
Answer: The plant has the largest vacuole than animal cells
Explanation: In plant cells the larger central vacuole performs two functions. I hope this helps :)
Help me ALL of these, and you get brainiest! (:
Answer:
1. Circulatory System
2. Respiratory System
3. Endocrine System
4. Nervous System
5. Urinary/ Excretory System
Explanation:
1. Circulatory System- The heart pumps blood and blood vessels such as arteries and veins, transports the blood to every part of our body providing organs and muscles with nourishment.
2. Respiratory System- This system maintains our breathing. It supplies the body with oxygen for cellular respiration.
3. Endocrine System- The glands of the endocrine system secrete chemicals called hormones that regulate most of the processes in our bodies like growth, reproduction, metabolism, etc...
4. Nervous System- The entire nervous system controls all of the other systems of the body and it also transmits information to the brain, such as pain and external sensations.
5. Urinary/Excretory System- This system is responsible for eliminating waste products of metabolism and other materials from the body that are of no use.
In the United States, which is responsible for ensuring the safety of the country's drinking water?
O A. Environmental Protection Agency (EPA)
B. Food and Drug Administration (FDA)
O C. National Oceanic and Atmospheric Administration (NOAA)
D. Center for Disease Control (CDC)
Answer:
B. Food and Drug Administration (FDA)
Answer:
b
Explanation:
it makes da most sense and imma smart boi duh
Bacteria break down organic matter and return carbon dioxide and water to the environment. This is an example. A. combustion. B. Transpiration c. Nitrogen fixation. d. decomposition.
Answer:
The answer is C-Nitrogen
Someone please help me its for science thanks
Answer:
answer b
Explanation:
because as said in the question the fruit is reliant on animals. So animals carry fruit seeds by fur
Answer:
B. Seeds that stick to fur
Explanation:
If the plant relies on animals to spread its seeds,then answer a,b,and c wouldn't be helpful. Answer b is the only one that relates to animals.
People who eat seafood might end up ingesting
☐ a. more than 5,000 tiny pieces of plastic each week.
☐ b. more than 10,000 tiny pieces of plastic each year.
☐ c. more than 3,000 tiny pieces of plastic each month.
Answer:
B.
Explanation:
Seafood eaters ingest up to 11,000 tiny pieces of plastic every year.
Please help, will give brainiest
Answer:
i can do all the work for u
Explanation:
Which best explains why water may be treated differently in different communities?
o A. Some communities avoid using groundwater.
O B. Groundwater requires more expensive treatments.
O C. Environmental factors vary between communities.
Are sharks and dolphins homologous or analogous?
Answer:
analogous I think
Explanation:
Help please,, it’s the second part to my previous question
Answer:
Another factor can be photosynthesis.
Explanation:
During photosynthesis, plants would give off some oxygen as a waste product. The carbon dioxide would then move from the air into the leaves of the plants through tiny openings in the plant's leaves. Oxygen moves out of the plant's leaf through the same openings.
The image shows a week-old chick embryo. What can you conclude about its current stage of development? Help me please, it’s multiple choices
Answer:
1. A spinal column is present
5. It's about to undergo a metamorphosis
Explanation:
It's:
#1 because, you can clearly see the spine in the image.
#5 because, metamorphosis is a very common process which marks the transition between embryonic and adult life stages.
It's Not:
#2 because the chick already developed limbs and an beak.
#3 because chickens are vertebrates (animals that lack an back bone are invertebrates).
#4 because it's a chick, chickens are considered mature when they start laying eggs.
Which of the following statements is true about vaccines?
A. Vaccines only work against bacterial disease
B. Vaccines work infecting someone with a dangerous disease
C. Vaccines are yet to be proven safe by scientists.
D. Vaccines work by teaching the bodies immune system to fight off disease
________________ digestion begins in the mouth through the action of teeth chewing the food
A. Protein
B. Lipid
C. Mechanical
D. Chemical
Answer:
C. Mechanical
Explanation:
Mechanical digestion involves physically breaking the food into smaller pieces. Mechanical digestion begins in the mouth as the food is being chewed.
List at least three examples of cnidarians.
Answer:
corals, hydras, jellyfish, Portuguese men-of-war, sea anemones, sea pens, sea whips, and sea fans.
Explanation: hope it helped :)
1. Adult blank reproduce sexually by releasing sperm and egg.
2. The egg develops into a blank.
3. The blank attaches to a hard surface and develops into a polyp.
4. Parts of the polyp may break away. This is a form of blank reproduction
5. Each polyp matures into an adult, called a blank.
Directions: where it says blank pls fill it in./ Can you pls take this serious/ Thank you so much!
Answer: I think its 2
Explanation:
Which two fields make up electromagnetic waves?
Answer:
All electromagnetic fields (EM waves) consist of two component fields, electric fields (E fields) and magnetic fields (H fields). E fields and H fields are companions and together make up the total EM field. Where one is, so is the other
Explanation:
Your welcome ! Let me know if you need a better explanation.
AYO PLEASE HELP ME WITH THIS
Answer:
D. Percolate
Answer:
Ayyy shawtyyyyyy, just saying this here my friend is percolate
Explanation:
I recently did an assignment like this
What does NASA expect to gain by studying the effects of long-term space travel on the human body?
Answer:
NASA studied astronaut twins Mark & Scott Kelly to determine the effects of staying in space for a year. ... Space presents unique stresses to the human body. With lower gravity levels, for example, bones and muscles are more likely to become weak since they no longer have to support the weight of the body.
What types of waves are sound and light? Explain how they would be classified based on the direction of their particle movement and whether they can move through a vacuum. Use details to support your answer.
Answer:
Longitudinal versus Transverse Waves versus Surface Waves
One way to categorize waves is on the basis of the direction of movement of the individual particles of the medium relative to the direction that the waves travel. Categorizing waves on this basis leads to three notable categories: transverse waves, longitudinal waves, and surface waves.
A transverse wave is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves. Suppose that a slinky is stretched out in a horizontal direction across the classroom and that a pulse is introduced into the slinky on the left end by vibrating the first coil up and down. Energy will begin to be transported through the slinky from left to right. As the energy is transported from left to right, the individual coils of the medium will be displaced upwards and downwards. In this case, the particles of the medium move perpendicular to the direction that the pulse moves. This type of wave is a transverse wave. Transverse waves are always characterized by particle motion being perpendicular to wave motion.
A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves. Suppose that a slinky is stretched out in a horizontal direction across the classroom and that a pulse is introduced into the slinky on the left end by vibrating the first coil left and right. Energy will begin to be transported through the slinky from left to right. As the energy is transported from left to right, the individual coils of the medium will be displaced leftwards and rightwards. In this case, the particles of the medium move parallel to the direction that the pulse moves. This type of wave is a longitudinal wave. Longitudinal waves are always characterized by particle motion being parallel to wave motion.
A sound wave traveling through air is a classic example of a longitudinal wave. As a sound wave moves from the lips of a speaker to the ear of a listener, particles of air vibrate back and forth in the same direction and the opposite direction of energy transport. Each individual particle pushes on its neighboring particle so as to push it forward. The collision of particle #1 with its neighbor serves to restore particle #1 to its original position and displace particle #2 in a forward direction. This back and forth motion of particles in the direction of energy transport creates regions within the medium where the particles are pressed together and other regions where the particles are spread apart. Longitudinal waves can always be quickly identified by the presence of such regions. This process continues along the chain of particles until the sound wave reaches the ear of the listener. A detailed discussion of sound is presented in another unit of The Physics Classroom Tutorial.
Explanation:
Which of the following is a substance?
A) smoke
B) salt
C) granite
D) brass
Answer:
B) salt
Explanation:
It is considered a substance because it has a uniform and definite composition. Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary.
Hope this helped!!!
PLEASE HELPPP
question attachted below.
Answer:
x
Explanation:
I think
Amino acids are small molecules that make up proteins.
What information do genes determine when building proteins?
choose all that apply:
1)the amino acids that are used.
2)the order of the amino acids.
3)the location where the protein is built.
4)the total number of amino acids.
A student made the following diagram to represent cellular respiration.
The title of the diagram is Cellular Respiration. An oval labeled Cell has five arrows around it. The arrow labeled Oxygen points towards the cell. The other four arrows labeled Glucose, Carbon dioxide, Water, and Energy point away from the cell.
Why is this diagram incorrect?
A)Water is not formed during this process.
B) Carbon dioxide is not formed during this process.
C)The arrow for oxygen should point in the opposite direction.
D)The arrow for glucose should point in the opposite direction.
Answer:
d) the arrow for glucose should point in the opposite direction.
Explanation:
Help Me please read the image thank you
Answer:
It will affect the environment in many ways.
Explanation:
It will destroy some of the animals habitats that live thereIt will endanger the animals that lived in those habitats It will break and destroy plants that once grew where they put the highway