Answers
Answer:
Polar Bears
Arctic Foxes
Seals
Penguins
They all live in the cold, so they all must live in the Arctic Tundra ;)
Answer:
Animals such as polar bears, arctic wolves, and arctic foxes live in the Arctic Tundra.
Related Questions
Which statements correctly describe light? (Select all that apply.)
A.Light travels in a straight line.
B.Light behaves in a predictable way.
C.Light can be reflected or refracted,
D.Light curves around corners or obstructions
Please help me
Answers
Answer:
it says select all that apply hhh easy just select and apply the answer hhh
Explanation:
What is the difference between stressed and bleached coral?
PLEASE I BEG YOU
Answers
Answer:
When corals are stressed by changes in conditions such as temperature, light, or nutrients, they expel the symbiotic algae living in their tissues, causing them to turn completely white. Warmer water temperatures can result in coral bleaching.
Which two! statements are true for both compounds and mixtures?
A.They can be separated into two or more elements.
B.Their particles are held together by chemical bonds.
C.They are made up of more than one type of atom.
D.Their particles all have the same chemical formula.
Please do not copy peoples answers to get points.
Answers
Can i be marked brainliest??? But its B and C
Explanation:
A. Their particles are held together by chemical bonds.
This option is incorrect for both compounds and mixtures. It is only true for Compounds.
B. They are made up of more than one type of atom.
This is correct. Both compounds and mixtures consists of different atoms of elements.
C. They can be separated into two or more elements.
This option is correct. Compounds are broken down into elements through chemical means.
D. Their particles all have the same chemical formula.
This is wrong. Mixtures do not have chemical formula
“Salt Crystal Experiment”
Draw a model to describe the atomic composition of salt before the experiment and then show how it changed after the experiment.
Answers
Answer:
hope its useful ... for u
Explanation:
this is drawn by me digitally
Select the correct scientific notation form of this numeral using only 2 significant figures. 5,421,200.00 m
Answers
Answer:
5.4 × 10^6
Explanation:
How do you make an atom model? PLEASE HELP ANY IDEAS GUYS?
Answers
Answer:
If you are looking for like a drawing say less.
I need help quickly, this assignment is due in a few hours. I have a few 8th grade science questions I need help with. These is not need to explain your answer, just tell me if the answer is a,b, or c. Also, please answer all of the questions listed not just some of them. I will be giving 20 points if you answer, and brainly to the first person to answer. The questions look really complicated but it is mainly just a long description. The questions themselves seem simple.
QUESTION ONE : Miranda was learning to bake bread at home. Her first few batches of dough did not rise, or expand, as much as they should have. Miranda's mother noted that the kitchen was cold and suggested that the dough might not be warm enough to rise. Miranda decided to test her mother's suggestion. She made a large batch of dough and divided it into six equal-sized balls. Then, she put each ball into a bowl. She left three bowls on the counter in the kitchen, where the temperature was 63oF. She left the other three bowls on her desk in her upstairs bedroom, where the temperature was 80F. After one hour, Miranda measured the size of each dough ball.
Which of the following was the dependent variable in the experiment?
a. the temperature where the dough was left to rise
b. the ingredients used to make the dough
c. the size of each dough ball
QUESTION TWO: Jada liked to make guacamole, but she could often find only unripe avocados at the grocery store. In biology class, Jada learned that ripe fruits produce a gas called ethylene that can cause other fruits to ripen. Jada wondered whether storing ripe bananas with unripe avocados would make the avocados ripen faster. Jada prepared four paper bags with five unripe avocados in each bag. She added on ripe banana to two of the bags. Then, Jada sealed all four bags. After three days, she opened each bag and counted the number of ripe avocados in each bag.
Which of the following was the independent variable in this experiment?
a. the type of paper bag used
b. the number of bags with a ripe banana
c. the number of ripe avocados
QUESTION THREE: Colette was using steel to make rusted sculptures. After building each sculpture, she caused the steel in the sculpture to rust by placing it into tub filled with salt water for eight hours. Colette wondered if steel would rust faster submerged in vinegar instead of salt water. To find out, Colette cut ten squares of steel sheet metal and split them into two equal groups. She put one group of squares into a tub filled with salt water and the other group of squares into a tub filled with vinegar. Once an hour for eight hours, Colette counted the number of rusted steel squares in each group.
Which of the following was a variable that was held constant (control variable) in this experiment?
a. the type of liquid used
b. the size of the squares of steel sheet metal
c. the number of rusted steel squares
QUESTION FOUR: David divided 40 unripe bananas evenly among eight paper bags and sealed the bags. He poked 20 small holes in four of the bags and left the other four without holes. He kept the bags at room temperature for three days. Then, David opened the bags and counted the number of brown spots on each banana. He compared the average number of brown spots on bananas from bags with holes to the average number of brown spots on bananas from bags without holes.
Identify the question that David's experiment can best answer.
a. Do bananas develop more brown spots when they are kept at room temperature compared to in a cold refrigerator?
b. Do bananas develop more brown spots if they are kept in bags with holes compared to bags without holes?
c. Do bananas develop more brown spots when they are kept in brown paper bags compared to in a plastic bag?
QUESTION FIVE: Ten groups of chemistry students combined three solutions that, when mixed, chemically reacted and turned blue. Before mixing, five groups of students heated the solutions to 25C, and five other groups heated the solutions to 50C. The students recorded how many seconds it took for the mixtures to turn blue. Then, the groups shared their results, and the class compared the time it took for the mixtures to turn blue at 25C and at 50C.
Identify the question that the students' experiment can best answer.
a. Does the type of color the mixture produces depend on the temperature of the solutions?
b. Does the mixture of solutions release more gas when they are mixed at 25C compared to 50C?
c. Does the mixture's color change faster when the solutions are mixed at 25C or 50C?
Answers
Question 2: A
Question 3: B
Question 4: B
Question 5: C
Fill each box with the chemical formula of the compound.
Answers
NaF, NaBr, Na2O, Na2S, Na3N, Na3P, NaI
KF, KBr, K2O, K2S, K3N, K3P, KI
BeF2, BeBr2, BeO, BeS, Be3N2, Be3P3, BeI2
MgF2, MgBr2, MgO, MgS, Mg3N2, Mg3P2, MgI2
CaF2, CaBr2, CaO, CaS, Ca3N2, Ca3P2, CaI2
Hope this helps! Make sure that the numbers are written small at the bottom of the letter cause it wasnt possible to do that here.
A plant makes glucose during photosynthesis. Glucose consists of the elements carbon, hydrogen, and oxygen. What is the source of the elements for the glucose that the plant makes? Construct an explanation.
Answers
Answer:
The source of the elements that make up glucose in a plant is primarily carbon dioxide (CO2) from the air, water (H2O) from the soil through the roots, and energy from sunlight.
During photosynthesis, chlorophyll in the plant's leaves absorbs light energy and uses it to convert carbon dioxide and water into glucose and oxygen. This process involves a series of complex chemical reactions, collectively called the Calvin cycle, that occur within specialized structures in plant cells called chloroplasts.
In the first stage of the Calvin cycle, carbon dioxide molecules in the air are captured by an enzyme called rubisco and combined with a molecule called ribulose bisphosphate (RuBP). This results in the formation of an unstable molecule that quickly breaks down into two molecules of a three-carbon compound called 3-phosphoglycerate (3PG).
Next, the energy from sunlight is used to convert the 3PG molecules into a different three-carbon compound called glyceraldehyde 3-phosphate (G3P). Some of the G3P molecules are used to make glucose, while others are used to regenerate the original RuBP molecule that can be used in the next cycle.
Finally, the glucose molecules are transported throughout the plant and used as a source of energy for cellular respiration, which releases the stored energy in the glucose molecules to power various cellular processes in the plant. The oxygen produced during photosynthesis is released into the air as a byproduct of the process.
In summary, the source of the elements for the glucose that the plant makes is carbon dioxide from the air, water from the soil, and energy from sunlight.
Explanation:
Answer:
The source of the elements that make up glucose in a plant is primarily carbon dioxide (CO2) from the air, water (H2O) from the soil through the roots, and energy from sunlight.
During photosynthesis, chlorophyll in the plant's leaves absorbs light energy and uses it to convert carbon dioxide and water into glucose and oxygen. This process involves a series of complex chemical reactions, collectively called the Calvin cycle, that occur within specialized structures in plant cells called chloroplasts.
In the first stage of the Calvin cycle, carbon dioxide molecules in the air are captured by an enzyme called rubisco and combined with a molecule called ribulose bisphosphate (RuBP). This results in the formation of an unstable molecule that quickly breaks down into two molecules of a three-carbon compound called 3-phosphoglycerate (3PG).
Next, the energy from sunlight is used to convert the 3PG molecules into a different three-carbon compound called glyceraldehyde 3-phosphate (G3P). Some of the G3P molecules are used to make glucose, while others are used to regenerate the original RuBP molecule that can be used in the next cycle.
Finally, the glucose molecules are transported throughout the plant and used as a source of energy for cellular respiration, which releases the stored energy in the glucose molecules to power various cellular processes in the plant. The oxygen produced during photosynthesis is released into the air as a byproduct of the process.
In summary, the source of the elements for the glucose that the plant makes is carbon dioxide from the air, water from the soil, and energy from sunlight
Explanation:
How can the rate of a reaction be decreased?
Responses
A: having more surface area
B: lowering the amount of reactants
C: adding a catalyst
D: raising the temperature
Answers
Help please with number 3 don’t worry I will give brainliest to the best answer!
Answers
Select the correct answer.
Why are business organizations looking for professionals with journalistic skills?
A. to create quality content to connect better with customers
B. to diversify into the field of news reporting
C. to save on the overall cost of hiring
D. to hire ethical and honest professionals
Answers
no:A
is a correct answer
business want to bring quality content to their customers in order to appear more professional, that way they seem trustworthy so more customers buy from them.
What information does the periodic table give you?
Answers
The periodic table contains information about each of the known elements. It includes the name of each element, its atomic number, its atomic mass and its chemical symbol.
The periodic table is divided using groups (columns) and periods (rows).
Each specific group or period has a specific pattern in the elements.
The modern periodic table is arranged in order of increasing atomic number.
I’m not really sure what information what you were asking for but I hope this helps..
The modern periodic table was created by Dmitri Mendeleev with the main goal of showing rows and columns with a logic arrangement of chemical elements.
In each column, the groups, the elements have the same number of electrons in the outermost shells. While the rows are called periods or series.
Please help quickly. Just tell me the color so you dont have to type it out
Answers
1. Pick an example of a wave. Describe one piece of evidence that the wave does carries energy from one place to another.
Answers
Answer:
oceans it can gives wave
Answer:
oceans it can gives wave
Explanation:
How is the momentum of an object determined?
What happens every time one of the boys playing ping pong hits the ball?
How could the boy playing ping pong keep from hitting the ball off the table?
I GIVE 20 PTS PLS HEELP
Answers
Answer: He needs to hit the ball with less force.
Explanation:
hope this helps
2. Based off the answer to the first question, by hitting the ping pong ball, momentum is transferred from the boy to the ball. Causing the ball to have more velocity/speed and gain more momentum.
3. Momentum before = momentum after
Every time the ball hits the table, some momentum transfers from the ball to the table. Every time the player hits the ball, some momentum transfers from the player to the ball. This allows the player to continue playing ping pong as the ball always has momentum.
Human obtain electricity through fossil fuel, nuclear, solar, geothermal, wind, biomass, and hydroelectric power.
For at least two of these, explain ways that using this resource could pollute freshwater.
Answers
For fossil fuel: Oil spills and leaks during extraction or transport can pollute water sources.
For nuclear power: An uncontrolled nuclear reaction can result in widespread a contamination of water.
first to answer right gets Brainiest!!!!!!
Answers
Answer:
1) Tetanus is a potentially fatal bacterial infection that affects the nerves
2)Tetanus causes painful muscle contractions, particularly in the jaw and neck. It can interfere with the ability to breathe, eventually causing death.
3) infants and the elderly are most likely but every one can get it.
4) The tetanus vaccine is made by taking the tetanus toxin and inactivating it with a chemical. The inactivated toxin is called a "toxoid." Once injected, the toxoid elicits an immune response against the toxin
5) Tetanus antiserum was developed in 1890, with its protective effects lasting a few weeks. The tetanus toxoid vaccine was developed in 1924, and came into common use for soldiers in World War II.
6)CDC recommends tetanus vaccination for all babies and children, preteens and teens, and adults
7) After the initial tetanus series, booster shots are recommended every 10 years.
8)help your immune system protect against these infections
9)Reported tetanus cases have declined more than 95%, and deaths from tetanus have declined more than 99% in the United States since 1947.
10) although the tetanus vaccine can be a very rare cause of a short-lived allergic reaction called "anaphylaxis," the tetanus vaccine does not cause death so the benefits outweigh.
11)They are most commonly found in animal manure and contaminated soil, but may exist virtually anywhere.
Tetanus is a bacteria
The symptoms are muscle spasms and paralysis and or stiffness in muscles
Everyone can get tetanus
Vaccines work by adding a little of the bacteria so your immune system can get a little of tetanus to know how to defend against it.
The first vaccine was produced in 1924
everyone should receive it
you should get one every 10 years
This is important because tetanus is not rare and can cause life changing effects like paralysis
no there has been no real big changes as far as i know
People who vaccinate have a small risk of contracting tetanus from the shot, and people who don't vaccinate could get really bad if not life threatening cases of tetanus.
Yes Defiantly
im not sure about this one
Hope this helps!
What is the is arrow pointing to? A.period symbol of manganese. B isotope symbol of manganese. C.group symbol of manganese. D atomic symbol of manganese.
Answers
Answer: The answer is D. the arrow is pointing at the atomic symbol of manganese
Explanation:
Atomic symbols are the letters that represent elements like how the atomic symbol "O" represents the element oxygen
7: How many times can a volcano erupt?
Answers
Answer:
Some small volcanoes only erupt once in their lives,
while other volcanoes erupt multiple times. Kilaeua volcano in Hawaii, which has been erupting continuously since 1983, is the world's most active volcano. While some volcanoes erupt at regular intervals, there are always exceptions to the rule
Answer:
small volcano's only 1 time while big volcano's mutiple times
Explanation:
On the periodic table, elements become more metallic as you move from left to right across a row, and top to bottom down a column.
True
False
Which groups/families are known to have low melting points?
Transition Metals
Alkaline Earth Metals
Halogens
Alkali Metals
Nobel Gases
Scale is defined as how big something is
True
False
How many chlorine atoms are in one molecule of NaCl?
A. 1
B. 0
C. 2
D. Molecules don't have atoms
Answers
Answer:
true, false, 0
Explanation:
Answer:
1. False: metallic character decreases as you move from left to right.
2. Nobel gas is your best bet since Helium has the lowest melting point.
3. False: scale can refer to small or large.
4. 1 chlorine atom
*I’m confused? Pls help, it’s due tmr*
Modeling Tool: Two Samples at the Atomic Scale
Goal: Create a model that represents a repeating group of atoms that could make up sample 2.
Answers
Answer:
PENTANE
Explanation:
What’s the most historic thing that has happened in your lifetime?
Answers
Answer:
Uhh when I sleepwalk I guess I talk to my parents randomly and get in to stuff and I find it Hilarious what about u
Explanation:
explain why the sun appers to be the brightest star in the sky. relate your explanation with an example such as street lights. this is science
Answers
Answer:
The sun is a star but It is the brightest in the sky because it is the closest star to earth.
I don't know how to compare it to street lights though...
Explanation:
plssss help it will be real;ly nice of you
Answers
MA= 600N/30N
MA= 20N
Answer:
ExplainMA formula: output force/input force
MA= 600N/30N
MA= 20Nation:
Why do people mix up weather and climate?
Answers
Answer:
The difference between weather and climate is a measure of time. Weather is what conditions of the atmosphere are over a short period of time, and climate is how the atmosphere "behaves" over relatively long periods of time.
Explanation:
please mark this answer as brainlest
Answer:
Weather and climate are not the same things, yet we might get confused between the two.
Explanation:
sorry if this does not answer your question
Simple and complex molecules are similar in that they both involve ____ atoms A water B simple C bonded D complex
Answers
Answer:
The answer is C.
Explanation:
Please give brainliest
Answer:
D
Explanation:
complex, in chemistry, a substance, either an ion or an electrically neutral molecule, formed by the union of simpler substances (as compounds or ions) and held together by forces that are chemical (i.e., dependent on specific properties of particular atomic structures) rather than physical.
Please help!!i NEED to get this right
Answers
Make a claim about whether or not a piece of pottery is an example of a fossil? Summarize evidence to support your claim and explain your reasoning.
Answers
Answer:
A piece of pottery is deemed NOT a fossil because fossils are the remnants of a once living thing,a piece of pottery is a historic item,a relitivitely old item.
help please giving 10 points and brainlyiest
Answers
Answer:
I would try B and A.
Explanation:
I say this only because some veggies may be hard to slice and to prevent emergencies you would want to make the handle longer. Making it sharper and thinner would help, too because it would be easier to hold.