Joel claims that “Bright White Toothpaste” removes tooth enamel stains better than all other brands. Which of the following should be documented as evidence to support his claim?
1. The amount of toothpaste used
2. The shade of teeth before and after brushing
3. The type of toothbrush used to brush teeth
4. The size of tooth
Answers
The independent variable in this instance is the bright white toothpaste, and if they’re claiming that it removes stains better than all, then that means that the dependent variable would be the shade of teeth!
The amount of toothpaste, the type of tooth brush, and the size of tooth are all variables of the experiment but will not determine if the claim is supported or not.
Hope this helps:)!
Related Questions
Please help... Need ASAP
No links or suggestions of where to go. I need a straightforward answer! Thank you!
The picture is down below. This is due tomorrow and I have been working on it all weekend. I am very stuck. I will give crown to whoever answers best.
Answers
Answer:
I think this is what you're looking for?
Explanation:
Is the cake considered as a solid mold, why?
a. Yes, because it carries the same external details of the mold.
b. Yes, because it carries the same internal details of the mold.
c. No, because it doesn’t carry any details of the mold.
d. No, because it carries the same internal & external details of the mold.
Answers
Answer:
I think its c correct me if im wrong
Explanation:
How did the Industrial Revolution contribute to global climate change?
A. It led to an increased use of alternative fuels other than fossil fuels.
B. It led to an increased use of coal, oil, and other fossil fuels.
C. It led to the release of chemicals that destroyed the ozone layer.
D. It led to the development of nonrenewable sources of energy. (I think it's B. Please correct me if I'm wrong.)
Answers
Answer: You're right its b.
Explanation:
Human activity has rapidly increased the emission of greenhouse gases to the atmosphere. Since the start of the Industrial Revolution, in about 1750, human activities such as burning fossil fuels, including coal and oil, have increased greenhouse gas concentrations in our atmosphere.
identify each of the cell structures and their function: centrosomes, aster, equator, cleavage furrow, cell plate, kinetochore fibers, spindle, microtubules and cytokinesis
Answers
Answer: Interphase
Explanation:
aster- they hold the two centrioles at the two opposite poles, and help the spindle apparatus to position during nuclear division.
equator- it divides the planet into a northern hemisphere and a southern hemisphere.
cleavage furrow- is an indentation that appears in a cells surface when the cell is preparing to divide.
cell plate- a plate that develops at the midpoint between the two groups of chromosomes in a dividing cell and that is involved in forming the wall between the two new daughter cells.
kinetochore fibers- the main function is to generate load-bearing attachments of sister chromatids to spindle microtubules during cell division.
spindle- is used to ensure the chromosomes are positioned properly inside the cell during mitosis.
microtubules- they regulate cell growth and movement, as well as key, signaling events which modulate fundamental cellular processes.
cytokinesis- the process by which one’s self physically divides into two cells.
hope this helps :)
What does the length of a vector arrow represent?
O A. magnitude
ОО
O B. angle
O c. force
O D. direction
Answers
Answer:
Bottom line is "the length of a vector arrow is a scalar quantity representing how long (or short) the arrow is .
Explanation:
The length of a vector is also know as the magnitude. The magnitude determines how quickly something is moving through space whereas the direction tells you where the vector is going. hope this helps you :)
Answer:
A. magnitude
Explanation:
Magnitude is just another word for "size/length." You will typically see vectors often appear in physics and levels of math starting from pre-calc.
Which of these organisms is not a chordate?
earthworm
snake
sea squirt
human
Answers
hope this helped.
A camel is lost in the desert. It is not finding any food or water. It needs 9000 kilo calorie energy and 4 litre water daily. Its mass is 650 kg and 10% of its mass is fat. It has a water reservoir near its neck with a reserve of 312 litre water. It can live using its fat storage. 1g fat contains 9 kilo calorie energy. How long the camel can survive with it's reserve?
Answers
The correct answer to how long the camel can survive with its reserve would be 65 days.
First, let us calculate the total amount of energy derivable from the fat in the body of the animal:
Mass of the camel = 650 kgMass of fat = 10% of the total mass= 10% x 650 = 65 kg
If 1g of fat is equivalent to 9000 kilocalories of energy in the animal, then, 65 kg of fat would be equivalent to:
65 x 1000 x 9000 = 585,000 kilocalories of energyThe total amount of energy is 585,000 kilocalories and the total amount of reserved water is 312 litres:
Amount of energy required per day = 9000 kilocaloriesNumber of days 585,000 kilocalories of energy can serve = 585,000/9000= 65 days
Amount of water needed per day = 4 litresNumber of days 312 litres of water can serve = 312/4= 78 days
The water reserve can last 78 days while the energy reserve can last 65 days. Since the camel needs both to survive, it means the animal can only survive for 65 days.
More about the camel can be found here: https://brainly.com/question/17997279
A microscope has 10x low power objective and a 60x high power objective. If the low power field of view measure 2.4 mm, and 20 microorganisms could gross the diameter of the high power field of view, what is the diameter of each organism in micrometers?
Answers
Answer:
2.87
Explanation:
10x (10*7)
20x/7
2.87
Examine the layers of rock. Identify and explain which layer contains the oldest fossils.
Answers
Answer:
The oldest fossils would be D.
Explanation:
The reason the very bottom layer has the oldest fossils is because each time a layer is added the top layer is the youngest.
Answer: D
Explanation:
The lower you go through layers of rocks, the older the fossil is.
I NEED A Summary about cell membrane cytoskeleton
Answers
The cytoskeleton is a complex, dynamic network of interlinking protein filaments present in the cytoplasm of all cells, including bacteria and archaea. It extends from the cell nucleus to the cell membrane
and is composed of similar proteins in the various organisms.
I hope this helps you<333
Suppose you were asked to research information about a potentially dangerous synthetic food product. How would you evaluate the credibility of the sources you found?
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What is happening when the angle of the sun hitting the planet during our winter solstice when is that?
WILL BE MARKED BRAINLIEST!
Answers
Answer:The summer solstice occurs at the moment the earth's tilt toward from the sun is at a maximum. Therefore, on the day of the summer solstice, the sun appears at its highest elevation with a noontime position that changes very little for several days before and after the summer solstice. The summer solstice occurs when the sun is directly over the Tropic of Cancer, which is located at 23.5° latitude North, and runs through Mexico, the Bahamas, Egypt, Saudi Arabia, India, and southern China. For every place north of the Tropic of Cancer, the sun is at its highest point in the sky and this is the longest day of the year.
The winter solstice marks the shortest day and longest night of the year. In the Northern Hemisphere, it occurs when the sun is directly over the Tropic of Capricorn, which is located at 23.5° south of the equator and runs through Australia, Chile, southern Brazil, and northern South Africa.
Explanation:
The transformation and transport of substances though parts of Earth's system are known as biogeochemical cycles. What elements
and compounds cycle in the environment? (Site 3)
Answers
Answer:
Some compounds and elements that cycle through the environment include water, nitrogen, and carbon.
Explanation:
The elements that cycle in the environment are carbon, nitrogen, sulfur, phosphorous, and compounds such was water.
What is biogeochemical cycle?The term nutrient cycle refers to the cyclical exchange of nutrients between biotic and abiotic ecosystem elements. The biogeochemical cycle is another name for nutrient cycling.What are types of nutrient cycle?There are two types of nutrient cycle. They are:
Gaseous: the reservoir is the atmosphereSedimentary: the reservoir is found in the earth's crust.What elements are cycled and through which cycles?The elements and the types of cycle are:
Gaseous cycle involves carbon, nitrogen etc.Sedimentary cycle involves sulfur, phosphorous etc.To learn more about elements, biogeochemical cycle and nutrient cycle here,
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Which arrow or arrows represent a release of carbon dioxide? What process is occurring at the arrow(s) you selected?
Answers
Arrow 'f' releases carbon dioxide.
Answer:
F I think I am not sure though hope I helped.
Help please! Will give brainliest.
Answers
Answer:
the diagram shows the body structures that are similar though in different species due to common ancestry, this evidence is comparative anatomy.
Answer:
The diagram shows that they have homologus structure. All of these different species have the same bones but differnt fuctions like swimming vs flying. They show that we call came from a common ancester because we have similar structures even though they are differnt species.
Explanation:
What are ways scientists have learned about the inside of the Earth? (More than one answer is possible)
A. Earthquake Data
B. Robotic Exploration
C. Volcano Composition
D. The Earth's Magnetism
Answers
Answer:
A, C, and D *maybe B but im not sure abt it*
Explanation:
Type the correct answer in each box. Use numerals instead of words.
A force of 25 newtons moves a box a distance of 4 meters in 5 seconds.
The work done on the box is
Nm, and the power is
Nm/s.
Answers
What are three examples of life functions carried out by the single cell that makes up a unicellular organism?
Answers
I need help with this science work. I’m terribly confused.
Answers
Answer:
This is a mixture of science and math where both is very important, what you need to do is fill in 1 yard for every 46 million years of each of the events that happened.
Explanation:
your welcome i will always help if you let me just dont expect me to get your work done for you:)
A scientist wants to know how the distance from a nearby lake affects the amount of nitrogen found in the soil. She collects soil samples at various distances from the lake and measures the amount of nitrogen in the sample What is the manipulated variable in this experiment?
A. The distance from the lake
B. The size of the lake
C. The total number of samples
D. The amount of nitrogen in each sample
Answers
Answer: I would think A (The distance from the lake) but if I'm wrong please let me know and ill fix it ASAP!
Explanation: A manipulated variable is an independent variable subject to the changes of an experiment to analyze its effect on a dependent variable.
Match the 8 different phylum to their correct description. Write the name of each phylum and the description next to it. Then, list 2 examples of organisms that belong to each phylum
1) PHYLUM ARTHROPODA
2) PHYLUM CNIDARIA
3) PHYLUM ANNELIDA
4) PHYLUM ECHINODERMATA
5) PHYLUM PORIFERA
6) PHYLUM PLATYHELMINTHES
7) PHYLUM MOLLUSCA
8) PHYLUM NEMATODA
Descriptions of phyla
-Acoelomate but bilateral; the flatworms
-Coelomate; the segmented worms
-Chitinous exoskeleton with jointed appendages
-Unsegmented & pseudocoelomate; the round worms
-Coelomate often with a cell; the mollusks
-Marine with radial symmetry; have tube feet & water vascular system
-They lack true tissues and organs; the sponges
-Aquatic with two cell layers & radial symmetry; the corals, jellyfish, and anemones
Answers
Answer:1) -Chitinous exoskeleton with jointed appendages ( Spider, Bee)
2)Aquatic with two cell layers & radial symmetry; the corals, jellyfish, and anemones ( Jelly Fish, Coral)
3)Coelomate; the segmented worms (Earth Worm, Leech)
4) Marine with radial symmetry; have tube feet & water vascular system ( Sea Urchins, Starfish)
5) They lack true tissues and organs; the sponges ( Spongilla, Sycon)
6)Acoelomate but bilateral; the flatworms (Tape Worms, Planaria)
7)Coelomate often with a cell; the mollusks (Scallops, Hard Clam)
8)Unsegmented & pseudocoelomate; the round worms(Round Worm, Human Pinworm)
Explanation:
Examples: insects, crabs, spiders
2. PHYLUM CNIDARIA - Aquatic with two cell layers & radial symmetry; the corals, jellyfish, and anemones
Examples: coral, jellyfish
3. PHYLUM ANNELIDA - Coelomate; the segmented worms
Examples: earthworms, leeches
4. PHYLUM ECHINODERMATA - Marine with radial symmetry; have tube feet & water vascular system
Examples: starfish, sea urchins
5. PHYLUM PORIFERA - They lack true tissues and organs; the sponges
Examples: sponge, glass sponge
6. PHYLUM PLATYHELMINTHES - Acoelomate but bilateral; the flatworms
Examples: tapeworms, flukes
7. PHYLUM MOLLUSCA - Coelomate often with a cell; the mollusks
Examples: snails, clams
8. PHYLUM NEMATODA - Unsegmented & pseudo coelomata; the round worms
Examples: roundworms, hookworms
PICTURE BELOW / Which phase of cell division is shown?
A. metaphase
B. anaphase
C. telophase
D. prophase
Answers
The phase of cell division that is showing here is prophase. The correct option is D.
What is cell division?Cell division occurs in two stages: mitosis and meiosis. When most people say "cell division," they're referring to mitosis, the process of creating new body cells.
Meiosis is the process by which egg and sperm cells are formed. Mitosis is a necessary process for life.
Cell division is the process by which new cells are formed in the body for growth, repair, and replacement. This process involves the division of nuclear material as well as the division of cytoplasm.
Prophase, prometaphase, metaphase, anaphase, as well as telophase are the stages. Cytokinesis is the final physical cell division that occurs after telophase and is thus sometimes considered a sixth mitotic phase.
Prophase is the phase that is shown in the image as it involves condensing of chromatids and movement if centriole to opposite pole.
Metaphase is the phase in which the chromosomes align at the equator and anaphase separate the chromatids and move towards opposite pole.
Thus, the correct option is D.
For more details regarding cell division, visit:
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Which of the following puts the components of a cell in order from smallest to largest?
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Please help me
How to convert time on a 24 hour clock ?
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Answer: If the time on the clock is 12 pm, then you remove the pm and it just becomes 12.
12 am becomes 00.
Below is a comparison.
12 hour time on the left and 24 hour time on the right.
12: 00 am --> 00: 00
1: 00 am --> 1: 00
2: 00 am --> 2: 00
3: 00 am --> 3: 00
4: 00 am --> 4: 00
5: 00 am --> 5: 00
6: 00 am --> 6: 00
7: 00 am --> 7: 00
8: 00 am --> 8: 00
9: 00 am --> 9: 00
10: 00 am --> 10: 00
11: 00 am --> 11: 00
12: 00 pm --> 12: 00
1: 00 pm --> 13: 00
2: 00 pm --> 14: 00
3: 00 pm --> 15: 00
4: 00 pm --> 16: 00
5: 00 pm --> 17: 00
6: 00 pm --> 18: 00
7: 00 pm --> 19: 00
8: 00 pm --> 20: 00
9: 00 pm --> 21: 00
10: 00 pm --> 22: 00
11: 00 pm --> 23: 00
A slug, frog, heron, bird, and grass plant are all part of the same food chain.
Through which process does energy get into the food chain?
Which organisms are consumers in this food chain?
Why would there be fewer herons in the ecosystem than slugs?
Fungi are decomposers in this ecosystem. Where do they fit into the food chain? Explain.
Answers
Answer: The energy comes from the sun.
Explanation: The energy comes from the sun and is stored in food through the process of photosynthesis in plants.
Which statement correctly describes measuring with a graduated cylinder?
The liquid in the cylinder usually forms a convex meniscus.
Measurement is taken at the bottom of the meniscus.
Measurement is taken at the top of the meniscus.
The liquid in the cylinder can only be water.
Answers
Answer:
measurement is taken at the bottom of the meniscus.
Explanation:
the first answer is not correct since water forms a convex meniscus while Mercury forms cone meniscus just as indicated in the photographs above.
I agree with the second point since we were taught that the Reading should always be taken at the bottom of the meniscus.not on top of the meniscus.
the liquid in the cylinder cannot only be water. we can either put water, Mercury or any other liquid,but not specifically water.
Answer:
measurement is taken at the bottom of the meniscus.
Explain how some traits can be heritable (nature), but also affected by the environment (nurture).
Answers
Answer: Heredity, also called inheritance or biological inheritance, is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents
Explanation:
What recommendations would you give to the global governments to help decrease the global effects of human impact on the environment? List 2 recommendations and how they will positively impact our planet.
Answers
Answer:
Here are a couple of examples!
Explanation:
1. PROTECT AND RESTORE KEY ECOSYSTEMS
2. SUPPORT SMALL AGRICULTURAL PRODUCERS
3. PROMOTE GREEN ENERGY
4. COMBAT SHORT-LIVED CLIMATE POLLUTANTS
5. BET ON ADAPTATION, NOT JUST MITIGATION
Answer:
having less industries to stop the smoke from affecting the ozone layer which causes acid rain
Which environment is characterized by very low temperatures and low humidity year round?
Desert
Grassland
Swamp
Tundra
Answers
Reasoning: When you think of a tundra, it’s more of like Antarctica. Possibility to be confused with deserts, which have little to no precipitation/low humidity.
Provide an example of a neutral mutation