which two are the most similar?
A: comets and asteroids
B:comets and meteorites C:asteroids and meteoroids
D: asteroids and meteorites
Answer:
C.Astroids and meteoroids
Lithosphere and asthenosphere are in close contact with each other and always move together as a
whole body.
false or
True
Objects need to be in contact with each other in order to experience friction.
O True
O False
Answer:
false
I think I am not sure
Answer:
Yes
Explanation:
Because Friction is the force resisting the motion of solid surfaces that means that they have be in contact for there to be friction.
A technologist is performing a total cell count on a pericardial fluid. She prepares the undiluted fluid on a hemacytometer. An average of 170 cells was seen in the entire ruled area on each side of the hemacytometer. Calculate the total cell count. Group of answer choices
With the knowledge on the metabolism, describe this picture.
Answer:
ur metabolism going DOWNNNNN DOWN DOWN DOWN.
if it goes down, you burn less calories
which then makes u gain weight
which then makes u look a bit fuller, rounder -- whatever you wanna call it
Explanation:
lol, im sorry if i sound d-umb. l d0nt know
Which evidence in the diagram above indicates that a gas was
produced as a result of the reaction?
Answer:
the balloon
Explanation:
How photosynthesis happen with explanation
Answer: During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose
Explanation:
Explanation:
photosynthesis is a process in which green plant use energy from the sun light to transfer carbon dioxide ,water and mineral into oxygen and other organic compounds .
photosynthesis happen when water is absorbed by root of green plants and is carried by the xylem and carbon dioxide is obtained from air that enters leaves through the stomata and diffuses to the cell containing chlorophyll .The green plans pigment chlorophyll is uniquely capable of conserving the active energy of light into a latent from that can be stored (in food) and used when needed .
i hope it help you...........
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Identify two examples of chemical reactions that you have encountered during the last week. Identify whether each reaction is endothermic or exothermic and explain how you know.
Answer:
Examples of chemical reactions in everyday life include photosynthesis, rust
Rust is exothermic
All combustion reactions (such as the burning of coal) are exothermic. Incredibly, the reaction between iron and moist air that produces rust is a very exothermic process and generates lots of heat.
Photosynthesis is endothermic
Photosynthesis is an endothermic reaction. This means it cannot occur without energy (from the Sun). The light required is absorbed by a green pigment called chlorophyll in the leaves.
Explanation:
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personal safety when working with small pets is not a major concern as long as you have a sufficient training. true or false
Answer:
False
Explanation:
Even if your working with animals with professional traing you would still want to be cautious
The Food and Drug Administration has legal oversight over most food products and permits some health claims on food labels. The claims that are allowed at this time describe links between a few dietary practices and health outcomes. Drag the dietary practice to its appropriate FDA-permissible health claim.
Fatty acids from ols present in fish Diet adequate in synthetic form of folate Diot rich in fiber Diot low in sodium and high in potassium Reduced risk of neural tube Reduced risk of hypertension Reduced risk of defects and stroko cardiovascular disease Roduced risk of some types of cancer
Answer:
Reduced risk of neural tube defects- diet adequate in synthetic form of folate Reduced risk of hypertension and stroke- diet low in sodium and high in potassium Reduced risk of cardiovascular disease- fatty acids from oils present in fish Reduced risk of some types of cancer- diet rich in fiberExplanation:
As you may already know, the adequate intake of certain nutrients is very beneficial to our body and to improve and maintain our health. That's because these nutrients act in the construction of essential molecules to keep our body functioning in a healthy and adequate way. Among the numerous nutrients necessary for our health, we can mention that the adequate intake of folate has the ability to reduce the creation of possible defects in the neural tube, while a diet rich in potassium can reduce the risks of hypertension, especially if accompanied by a low sodium diet. Following this same reasoning, a diet rich in fiber can reduce the risk of cancer, in addition to promoting good bowel function. Last but not least, a diet rich in fatty acids from fish can reduce cardiovascular disease.
Compare Law of Conservation of energy and Law of Conservation of matter?
Answer:
Conservation of energy, principle of physics according to which the energy of interacting bodies or particles in a closed system remains constant. The first kind of energy to be recognized was kinetic energy, or energy of motion. In certain particle collisions, called elastic, the sum of the kinetic energy of the particles before collision is equal to the sum of the kinetic energy.
Explanation:
Super saturated solutions are used to make rock candy. Please describe how the crystals are formed, be sure to use the terms Solute and Solvent.
Answer:
Once the solution cools, it now has more solute than it normally could have, and this is called a supersaturated solution. Once a solution becomes supersaturated, it wants to crystallize the excess solute. The solute will form crystals on any surface. In our case the surface is a string, and we are using a lifesaver candy as our “seed.”
Explanation:
Rock candy is a type of candy made by growing sugar crystals on a string or stick.
Why are Super saturated solutions used?Super saturated solutions are often used to make rock candy because they contain more solute (sugar) than the solvent (water) can normally dissolve at a given temperature.
The first step in making rock candy is to heat water in a saucepan and add sugar to it. The sugar dissolves and forms a solution as the water heats up. After that, the solution is heated until it is completely saturated.
This occurs because the super saturated solution is unstable, and the excess solute (sugar) in the solution wants to escape and form crystals.
As time passes, more sugar dissolves from the solution and adheres to the crystals on the string or stick, causing them to grow larger.
The process is repeated until the crystals reach the desired size or until all of the excess solute has been removed from the solution.
Thus, preparing a super saturated solution of sugar and water, then dipping a string or stick into the solution and allowing the excess solute to come out of the solution and form crystals on the string or stick, is the process of making rock candy.
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What two types of changes to Earth's surface are illustrated in the model above ?
A. Erosion of sand from the beach during WINTER
B. Erosion of sand from the beach during SUMMER
C. Deposition of sand onto the beach during WINTER
D. Deposition of sand onto the beach during SUMMER
Answer:
D
Explanation:
The sand moves from the storage over to the shore/coastline during The summer, therefore, it's D.
The two types of changes to Earth's surface are erosion of sand from the beach during summer and deposition of sand onto the beach during winter. Therefore, the correct statements are option B and option D.
What changes occur to Earth's surface during summer?The model likely shows the effects of seasonal changes on a beach. During winter, waves and currents tend to deposit sand onto the beach, leading to a wider and more expansive shoreline, whereas during summer, waves and currents tend to erode the sand from the beach, leading to a narrower and steeper shoreline.
During the summer, high-energy waves erode the sand from the beach that lead to the formation of cliffs or other coastal landforms as the waves. and during the winter, lower-energy waves deposit sand onto the beach, that lead to the formation of sandbars or other coastal landforms along the shore.
The addition of sand during the winter months can have positive impacts on beach tourism, whereas in summer, negative impacts were seen on beach tourism.
Therefore, the two types of changes to Earth's surface are erosion of sand from the beach during summer and deposition of sand onto the beach during winter.
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A massive increase in the growth of a specific species of algae resulted in record-breaking levels of a potentially dangerous toxin being released into the water. A researcher hypothesizes that the unusual growth of this algal species was caused by an increase in water temperature. The researcher designs an experiment to test the hypothesis. Which of the following is the dependent variable in the researcher's experiment?
a. The growth of the algae
b. The temperature of the water
c. The concentration of toxin in the water
d. The different species of algae growing in the water
Answer:
a. The growth of the algae
Explanation:
The researcher already knows that the over-growth of algae species results in excessive levels of a potentially dangerous toxin being released. But he/she wants to know what is causing this algae over-growth. The principal hypothesis is that the increase in water temperature is the cause of the unusual growth of this algal species. The researcher hypothesizes that the higher the temperature levels are, the more growth rate the algae will exhibit.
So in this experiment, the researcher can voluntarily modify the temperature in order to see how it changes the algae growth.
Before answering the question, let us remember a few concepts.
Independent (manipulated) variable refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it. It changes to analyze its effects on the dependent variable. Usually, the independent variable is represented by the X letter. The Dependent variable reacts to any modification of the independent variable. Any change in the manipulated variable provokes a proportional or inversely proportional change in the dependent variable. It represents the quantity of something, such as height, weight, length, rate, etc. It is usually identified by the letter Y.Now, let us analyze the options.
c. The concentration of toxin in the water. This is a dependent variable, which depends on the algae growth. The more algae present, the more toxins. However, this is not what the researcher is studying. He/She wants to know what is causing the increase in algae. So toxins, in this study, would be a secondary effect.
d. The different species of algae growing in the water . Probably this is also related to temperature and the biology of each algal species. However, the researcher is interested in a specific species of algae.
b. The temperature of the water. The temperature of THE water is directly involved in this experiment, but as the INDEPENDENT VARIABLE. The researcher will modify the temperature in order to know how it changes the algae growth. The researcher voluntarily modifies this variable, and this change provokes a change in the dependent variable.
a. The growth of the algae. The Growth of THE algae is the DEPENDENT VARIABLE. It CHANGES ACCORDING TO THE TEMPERATURE. So the change in the algae growth will depend on how the researcher modifies the temperature. We are referring to one specific algal species. This species is responsible for the toxins´ productions and is suggested to depend on temperature.
What is the probability of a father with blood type o and a mother with blood type AB producing a child with blood type o?
A. 0%
B. 25%
C. 75%
D.100%
0% chance because blood type O isn't dominant over the others.
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After a skeletal muscle fiber is treated with a membrane permeable drug that speeds up the action of the SR Ca 2-ATPase, how would contraction differ after multiple and frequent action potentials
Answer:
the twitch would be shorter
Explanation:
In muscle cells, the calcium (Ca2+) pump ATPase membrane transport proteins maintain a low cytosolic Ca2+ concentration in order to promote muscle contraction. Muscle relaxation occurs when the sarcoplasmic reticulum reabsorbs Ca2+ through the Ca2+-ATPase protein, thereby reducing intramuscular Ca2+ levels. In muscle contraction, intracellular Ca2+ levels are raised due to the release of Ca2+ from the sarcoplasmic reticulum (SR) via Ca2+-release channels. In consequence, it is expected that a specific drug that speeds up the action of (Ca2+) pump ATPase protein should shorten the contraction-relaxation cycle by increasing the velocity of muscle relaxation.
what is a nucleic acid that contains the genetic information for heredity in most organisms.
Answer:
deoxyribonucleic acid Or ( DNA)
Explanation:
DNA contains the genetic information for heredity in most organisms.
Have a wonderful Day!
Answer:
there's all the answers
Explanation:
compared to the jovian planets terrestrial planets have…
Answer:
Jovian planets are larger, further from the sun, rotate faster, have more moons, have more rings, are less dense overall and have denser cores than terrestrial planets. Jovian planets also have gaseous atmospheres, with the main gases being hydrogen and helium.
Role of liver in carbohydrate metabolism.
Answer:
In the metabolism of carbohydrates, the liver helps to ensure that the level of sugar in your blood (blood glucose) stays constant. If your blood sugar levels increase, for example after a meal, the liver removes sugar from blood supplied by the portal vein and stores it in the form of glycogen.
Explanation:
During exercise, epinephrine and norepinephrine are released from the adrenal medulla. Epinephrine and norepinephrine have the same effect on plasma glucose levels as glucagon. Explain how epinephrine and norepinephrine affect plasma glucose and why this is important during exercise.
Answer and explanation:
Epinephrine and norepinephrine are two hormones that are released from the adrenal medulla when the body is under stress (like during exercise, for example) as a part of the sympathetic response.
These hormones have many functions and they all work together to prepare the individual for a fight or flight response - like increasing heart rate and producing bronchodilatation. One of these functions is the rise of glucose levels in blood which is important for this substance to reach several tissues, like the skeletal muscle. The skeletal muscle will make use of this glucose to produce ATP and generate the required energy for muscle contraction through a process called glycolysis, which is key for the fight or flight response mentioned above.
When we exercise, glucose levels rise thanks to these hormones so the skeletal muscle can have enough energy to contract and move as we want. If the exercise is too intense or prolongued, glucose levels will drop and other fuels will be needed to sustain this activity, like stored glycogen and fat.
Adenine is the nitrogenous base that is attached to sugar to make adenosine nucleotides. How many total atoms in adenine (excluding the location in the ring attached to the sugar in nucleotides and nucleic acids) can act hydrogen-bond donors and acceptors
Answer:
Four total atoms can act as hydrogen-bond donors and acceptors in adenine excluding the location in the ring attached to the sugar in nucleotides and nucleic acids.
Explanation:
Hydrogen bond donors are those H atoms covalently to an electronegative atom such as Nitrogen or Oxygen whereas Hydrogen bond acceptors are electronegative atoms such as nitrogen and oxygen with at least one lone pair of electrons.
Oxygen and nitrogen are electronegative atoms found in nitrogenous bases such as adenine and guanine. These electronegative oxygen and nitrogen atoms with free lone pairs of electrons serve as potential hydrogen bond acceptors.
Hydrogen atoms attached to these electronegative atoms have strong partial positive charge since the electrons shared between them are more on the electronegative atoms, thus, they are potential hydrogen bond donors.
In an adenine molecule, there are four total atoms that can act as hydrogen-bond donors and acceptors in adenine excluding the location in the ring attached to the sugar in nucleotides and nucleic acids.
In the attachment below, there are three nitrogen atoms that are potential hydrogen bond acceptors denoted by A, and one nitrogen atom donor denoted by D.
What happens when light hits the pigment in photosystem II?
A. It alters the shape of the photosystem II, allowing the light to pass into the thylakoids.
B. It sets off a reaction that releases water molecules into the inner space of the thylakoids.
C. It alters the shape of the photosystem II protein, releasing the water-splitting enzyme.
D. It sets off a reaction that moves energy through the proteins of the thylakoids membrane.
Answer: D
Explanation:
When a photon hit photosystem II, light energy absorbed by one of the pigments in photosystem II, energy is carried from one pigment to another and reach down to the reaction center.
Answer:
It sets off a reaction that moves energy through the proteins of the thylakoids membrane.
Explanation:
Ape-x
What is the purpose of the indentation in the of red blood cells
Answer:
The purpose of the indentation in the center of a red blood cell is: Increase the carrying capacity of the cell. The purpose of the indentation in the center of a red blood cell is: Increase the carrying capacity of the cell. This answer has been confirmed as correct and helpful
Answer:
Increase the carrying capacity of the cell.
Explanation:
How are meiosis and mitosis different?
Explanation:
mitosis results in two identical cells while meiosis results in four sex cells.
mitosis:prophase is short,meiosis: prophase is longer.
mitosis: daughter cells are genetically identical,meiosis:daughter cells are genetically different.
Answer:
meiosis and mitosis different by:
in mitosis Daughter cells are genetically identical
whereas in meiosis Daughter cells are genetically different
1. Why is diversity important in maintaining the stability of an ecosystem?
2. What is the broadest level of ecological classification within the biosphere?
What are the major abiotic factors used to characterize them?
3. What is the importance of plants in the ecosystem?
Answer:
if the ecosystem has a diverse range of species, it is more likely to stay safe against any virus that arises. That’s why biodiversity is important to ecosystems because it protects the environment from extreme conditions. Even if some species fail to survive, others will remain to sustain the ecosystem and the living things.
Explanation:
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What is marine habitat and its characteristics
Refer to the attachment
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Tongue curling in humans is a dominate trait. Suppose a man who is Tt for tongue curling marries a woman who is also Tt for this trait. What are the possible genotypes and phenotypes of their children and the percent chance for each? include genotypic and phenotypic ratios.
25% no 75% yes.
Use a punnett square
which term best describes this plant
Answer:
Please give the context of questions
Explanation:
it really helps people on this site answer these questions. Thanks
ABG
Question 10
What types of isolation lead to the formation of new species?
A
Behavioral isolation and geographic isolation lead to the formation of new species.
B
Temporal isolation and reproductive isolation lead to the formation of new species.
1/6
С
Reproductive isolation can develop in two ways, geographic isolation and temporal isolation
D
Reproductive isolation can develop in several ways, including behavioral isolation, geographic isolation, and temporal isolation
Unmute
Answer:
i
Explanation:
t
how planaarians able to survive without resoirtiry and circulatory system
Answer:
they possess different adaptive features
