Answer:
The inner core is solid, the outer core is liquid, and the mantle is solid/plastic. This is due to the relative melting points of the different layers (nickel–iron core, silicate crust and mantle) and the increase in temperature and pressure as depth increases.
Explanation:
Which zone on earth is best describes by its constant warm temperatures
Answer:
Tropical Zone
Explanation: Its near the equator with warm air masses with the average temperature in the coldest month is 18 °C. This is warmer than the average temperature of the warmest month in the polar zone.
To test the effectiveness of a new nutrient supplement, one group of identical mice is given the supplement, and the other group is not given anything. Which is the most complete list of the parts of an experiment presented in this scenario? independent variable, dependent variable control group, experimental group, dependent variable independent variable, control group, experimental group control group, experimental group
Answer:
The answer is the second option: Dependent variable, experimental group and control group
Explanation:
Let's list out all possible variables/groups in the option
Independent variable: This is a variable that is intentionally (directly or indirectly) altered by the one doing the experiment but is not affected by any variable/group during the course of the experiment. No Independent variable was mentioned.
Dependent variable: This is a variable that is affected by another variable and is usually the variable been tested during the course of an experiment. The dependent variable here is the effectiveness of a new nutrient supplement.
Experimental group: This is the group that is being treated during the course of an experiment. The experimental group here is the group of identical mice given the supplement.
Control group: This is a reference group that is not given any treatment during the course of an experiment. The control group here is the group of identical mice not given anything.
From the above description, it can be deduced that the parts of the experiment described in the scenario in the question is dependent variable, experimental group and control group.
Answer:
B :)
Explanation:
for people who speed run
2. I Love Popcorn!
Jason wanted to find out how he could increase the number of popcorn kernels that pop when
1
cooked. He hypothesized that more kernels would pop if he used more oil. To test this, he placed
100 kernels of "Pop Rite' popcorn into a popcorn popper that contained different amounts of oil. He
used the following amounts of oil: 5 ml, 10 ml, 20 ml, and 30ml. He used 5 ml of oil as the control.
Header
He conducted the test 3 times for each amount of oil. He then counted the number of kernels that
had popped. Each time he heated the oil for 2 minutes and cooked the popcorn for 4 minutes.
Hypothesis: I think the popcorn with the most oil will have the most popped kernels because the hotter
all the oil gets and the more oil there is in it, then the kernels will be able to pop faster. What are the:
Independent Variables:
Dependent Variables:
Controlled Variables:
Answer:
Independent: amounts of oil
Dependent: amounts of popped kernels
Controlled variables: Kernel brand, cooking time, popping time
Explanation:
Independent variables are what are changed in the experiment. The dependent variables depend on the independent so they are what is affected each time. Usually this is what is being tested for. Controlled variables are those that aren't being tested and are kept the same each time to make sure it doesn't change the outcome.
what happens when soil leaches
Answer:
In agriculture, leaching is the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. ... Leaching may also refer to the practice of applying a small amount of excess irrigation where the water has a high salt content to avoid salts from building up in the soil (salinity control).
Explanation:
DNA and rna are both?
Answer:
DNA and RNA are both molecules that contain genetic information and are made up of nucleotides.
Describe ways in which a healthy artery differs from an artery affected by coronary heart disease
Answer:
A healthy artery is wider and has no blockages. The lumen (which is the hole in the centre of the artery), is open and clear. This means there is more blood flow. An artery of a person suffering from coronary heart disease is often blocked, usually by a fatty deposit. This means the blood does not flow as well. (See diagram, in which I would draw two arteries, one with a blockage of fatty deposit, one clear and healthy).
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(b) Describe how a student could test cow's milk to show whether it contains protein
different types of carbohydrate.
To show that cow milk contains protein and different types of carbohydrate,food tests should be carried out by the student.
Carbohydrates (sugars) are the main sources of food through which the body derives energy from.
The various types of carbohydrate are the simple sugars, complex sugars and starch.
Proteins are the main body-building substances which are necessary for the maintenance of health.
The cow milk contains proteins and a type of carbohydrate called lactose which is an example of complex sugar.
To test for protein in milk, xanthoproteic reaction test should be carried out by the student. The procedure includes:
To the milk solution add a few drops of concentrated nitric acidA white precipitate forms, which turns yellow on heating.Cool the contents and add a few drops of ammonia solution.The colour of the precipitate deepens to yellow indicating presence of protein in the cow milk.To test for carbohydrate in milk, a test for complex sugar should be carried out by the student. The procedure includes:
Add milk solution and hydrochloric acid into a test tube. Place the test tube inside a boiling water-bath.The acid hydrolyses the complex sugar to simple sugars.Fehling's test is then carried out on the simple sugars that are formed which are glucose and galactose.An orange-red precipitate indicates a positive result.Learn more here:
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define electric potential of 1 volt
Answer:
Explanation:
one volt is the potential difference between two points in electric field if one joule of work is done to move a charge of one coulomb from one point to another point against the electric intensity
1v=1w/1q
For each food listed below choose whether it has it all single carbon to carbon bonds or at least one double carbon to carbon bond
Answer:
Peanut butter
All single carbon-to-carbon bonds
Sunflower oil
At least one double carbon-to-carbon bond
Cheddar cheese
All single carbon-to-carbon bonds
Explanation: I did it on Edge 2020 and it was correct.
what is the composition of fatty acid tails of trans fat?
Answer: Like fats, they are typically composed of fatty acid chains attached to a backbone of glycerol. Instead having three fatty acid tails, however, phospholipids generally have just two, and the third carbon of the glycerol backbone is occupied by a modified phosphate group.
Answer:
Like fats, they are typically composed of fatty acid chains attached to a backbone of glycerol. Instead having three fatty acid tails, however, phospholipids generally have just two, and the third carbon of the glycerol backbone is occupied by a modified phosphate group.
Explanation:
Info
What step of the scientific method comes after forming
question?
a
Which of these statements explains a key difference between unicellular and multicellular organisms?
A)Only multicellular organisms can photosynthesize
B)The cells of unicellular organisms are much smaller than the cells of multicellular organisms.
C)Multicellular organisms have cell walls that provide structure and support for their cells, but unicellular organisms do not.
D)Multicellular organisms have membrane bound organelles that carry out specific functions.
Answer:
Multicellular organisms have cells, not just organelles, that carry out specific functions
Explanation:
help asap i need to submit
Answer:
I think it's 1 boy sure tho
Name a pH level that amylase and
alkaline phosphatase share?
What would happen if a plant cell is placed in a solution of salt?
Which process occurred when water droplets formed on the grass
Answer:
condensation
Explanation:
because water is collected as droplets on a cold surface when humid air gets in contact with it
Condensation is the process occurred when water droplets formed on the grass because water is collected as droplets on a cold surface when humid air gets in contact with it.
What is condensation?The water droplets forming on inside is condensation.The transformation of airborne water vapor into liquid water is known as the condensation of water. It takes place when water transitions from a gaseous state to a liquid or crystallized state.
When the air is cooled below the dew point, the excess water vapor condenses onto surfaces in the form of water droplets. This is why we may notice water droplets forming on the outside of a cold glass of water on a hot day, or on the inside of a window on a cold day.
At high pressure and low temperature, any gas can condense. As a result, water droplets condense on the interior of a chilly windshield. Water droplets can form inside windows due to a process called condensation.
Therefore, Condensation is the process occurred when water droplets formed on the grass because water is collected as droplets on a cold surface when humid air gets in contact with it.
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6 different between mango and lotus
Answer:
Mango tree: ... They are also grown mostly for the mango fruit production as the mango production achieved Mangifera is their genus name . They have relatively large leaves and can grow up to the height of 40 meter. Rose plant : They are the plants which means they are relatively small and has the weak stem.
Why do you think it is so hard to get people to change their behavior?
Answer:
bcuz in which habit they have been addicted they can't change it easely after a long try also so it is hard to get people to change their behavior
In science Observation and experimentation correlate with what aspects of critical thinking
Answer:
The critic thinking
which may be defined by (the ability to verify assumptions, ideas, are they real, or bear part of the truth, or are they unreal) and may be defined as "reasonable contemplative thinking that focuses on what the individual believes or performs." It is an examination and evaluation of the solutions offered in order to make a judgment about the value of the thing
What is the reason for having eyebrows
Finch species living on the Galapagos Islands exhibit a variety of beak types that favor different foods. Finches that eat seeds and plant parts have beaks of the shorter, thicker variety, while finches that eat insects and other small organisms have thin, pointed beaks. 78% of the finches on an island in the Galapagos have beaks that are identical to Finch 1. What conclusion can you reach about the availability of food for the finches on this island?
A)
There is an abundance of insects.
B)
There is an abundance of seeds and nuts.
C)
There is a wide variety of foods for the finches to eat.
D)
Plants have died out and there are only insects for food
Answer:
B) There is an abundance of seeds and nuts.
what is the function of the rough endoplasmic reticulums (rough er) and are they found plant cells or animal cells or both
Answer:
Explanation:
Function of rough endoplasmic reticulums are:
* synthesizes lipids
* processes toxin and drugs in liver cell
* stores and release calcium irons in muscle cell
They found in animal cells
What is aerobic respiration?
Explanation:
The respiration which uses oxygen is called aerobic respiration. In aerobic respiration, the glucose food is completely broken down into carbon dioxide and water by oxidation. Aerobic respiration produces a considerable amount of energy for use by the organism which gets stored in the ATP molecules.
Which of the following is not a process that wears down or build up Earth's surface?
A. erosion
B. deposition
C. compaction
D. Weathering
Answer:
compaction
Explanation:
compaction doesn't wear down or build up the earth's surface
Can anybody give me a pdf or note about the flatworms?
Flatworms
James H. Thorp, D. Christopher Rogers, in Field Guide to Freshwater Invertebrates of North America, 2011
B Reproduction and Life History
Some flatworms, especially those living in temporary aquatic habitats, reproduce only once per year (univoltine), while other species are multivoltine, with the number of generations depending on environmental favorability. Most flatworms reproduce sexually, and almost all species are hermaphroditic. Although gamete exchange is most common, self-fertilization is possible in some species. Eggs are laid singly on a hard substrate, are grouped into clusters (sometimes stalked), or are placed in cocoons. Miniature flatworms emerge from eggs which have been attached to the substrate. These usually develop directly (without intermediate larval stages) into adults and differ only in size and presence of reproductive organs. A few species are ovoviviparous (young brooded inside parent) or have a distinct larval stage. Asexual reproduction occurs seasonally in many taxa and is the only form of reproduction in a few species. This form of reproduction involves differentiation of the adult body into distinct units (zooids) followed by separation into small flatworms via transverse division of the adult body. This process is aided by the remarkable regenerative abilities of flatworms.
Under demanding environmental conditions, flatworms produce resistant eggs able to survive desiccation of the surrounding environment or the animal may enter diapause (a very low metabolic state) and encyst as a whole animal or fragment of the adult.
Sexually reproducing flatworms can live from a few weeks to a few months (not counting periods of encystment), while the life span of asexual species is theoretically indefinite.
Why are most oceanic trenches found in the Pacific Ocean?
Answer:
It's where the subduction zones are.
Explanation:
Subduction zones - when two plates meet and one gives way to the other.
Answer:
Most oceanic trenches found in the Pacific Ocean because it is the largest ocean, therefore it has most most convergent boundaries. Whenever a convergent boundary is formed it creates a trench because the oceanic plates are denser the continental plates so they sink. This is known as subduction.
Anything that’s has mass and takes up space is considered to be
Answer:
matter
Explanation:
Which if the following statements is true regarding scientific hypothesis?
Answer:
A testable hypothesis is valuable, even if evidence shows that it is false
Explanation:
Sorry it took so long hope it helps!!
How did eukaryotic cells evolve (short simple answer and I’ll mark you as the smartest)
A carbon atom has four valence electrons. How do all living things depend on this property and other special chemical properties of the carbon atom?
Answer:
It is for the fact that Carbon need to fill up its shell for order to make it coplete. Hense using Covelant bonds. Carbon therefore can connect to oxygen, hygrogen, and other carbon molecules. Also Carbon can connect in 4 ways to. It also can form 2 main covelant bonds
Explanation:
I am a bio teacher
Carbon is an element with four valence electrons which makes it possible to
form covalent bonds with other elements such as Hydrogen, oxygen etc.
Carbon has four valence electrons and needs an additional four in order to
achieve a stable octet configuration. This makes it react with other
elements . When an element has fewer or no valence electrons in the outer
shell, it becomes less reactive to ensure the stable configuration isn't altered.
This is why carbon is able to pair electrons with other elements through
covalent bonding to ensure that the octet configuration is achieved.
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