A student investigates the effects of fertilizer on corn plants by performing the following steps: 1. Plant groups of corn plants in the same type and amount of soil in full sunlight. 2. Add the same amount of different brands of fertilizer to each group. 3. Water the plants for 5 minutes each day. 4. Measure the heights of the plants each day. What is the independent variable in this investigation?
I think the answer would either be the different brands of fertilizer
What are Pioneer organisms in a Primary and secondary succession?
Answer:real remains
Explanation: because of real time
In the periodic table, periods are_____rows.
Answer:
It's a row of chemical elements
Answer:
The rows on the periodic table are called periods. All the elements in a period have valence electrons in the same shell. The number of valence electrons increases from left to right in the period. When the shell is full, a new row is started and the process repeats.
Explanation:
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PLS HELP A student has four snails, four sprigs of Elodea, eight test tubes of bromothymol blue, and two rooms (light and dark). The student wants to know what gases are produced by the snails and Elodea in light and dark conditions. Assuming the student only has time for one experiment, what setup will yield the most complete data? All test tubes contain bromothymol blue. Experiment 1: Light room with test tubes A to D. A contains 1 snail. B contains Elodea. C is empty. D contains 1 snail and Elodea. Dark room with test tubes E to H. E contains 1 snail. F contains Elodea. G is empty. H contains 1 snail and Elodea. Experiment 2: Light room with test tubes A to D. Each test tube contains 1 snail. Dark room with test tubes E to H. Each test tube contains Elodea. Experiment 3: Light room with test tubes A to D. Each test tube contains 1 snail and Elodea. Dark room with test tubes E to H. Each test tube is empty. Experiment 4: Light room with test tubes A to D. A contains 2 snails and Elodea. B contains 1 snail. C and D are empty. Dark room with test tubes E to H. E contains Elodea. F contains 1 snail and Elodea. G and H are empty. a. Experiment 1 b. Experiment 2 c. Experiment 3 d. Experiment 4
Answer:
Its A Experiment 1
Explanation:
What is BTB changing color evidence for and why?
Answer:
ddd
hauajajsnwnjsjekddidkkdkd
Explanation:
d9d
sjdnejekkejejre
Give an example of something that has a high specific heat capacity.
When the Big Bang Theroy happend the heat capacity was 14.5 billon digrees
While observing slides under a microscope, Jack adjusts the microscope's mirror so that a circle of light can be seen. Which microscope is in use?
A.
Compound microscope
B.
Electron microscope
C.
Scanning electron microscope
Answer: A compound or light microscope
Explanation:
Scientists use tissue cultures to study possible medicines that can be used to treat cancer patients. What is one benefit of this procedure?
Patients do not receive harmful or ineffective medication.
The cultured cells are not in their normal environment.
Doctors know how to treat all types of cancer.
One tissue culture can be used for all cancer patients.
Answer:
b. Patients do not receive harmful or ineffective medication.
Explanation:
on edge
Tissue culture is used to treat cancer patients, as this procedure does not use any harmful or ineffective medication on the patients unlike the other treatment options. Thus, the correct option is A.
What is Tissue Culture?
Tissue culture is the process of growth of tissues or cells in an artificial medium that is separate from the parent organism. This technique is also known as micropropagation method. It is typically facilitated via the use of a liquid, a semi-solid, or a solid growth medium, such as the broth or agar medium.
Tissue culture is used widely in science for the propagation of plants, in the study of medicines such as those related to cancer. Tissue culture can be used as a treatment option in cancer as this technique does not show any harmful or ineffective medication. The cultured tissues of stem cells can be used for replacement of infected cells or body parts.
Therefore, the correct option is A.
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Micheal wants to test the effect of stomach acid concentration on the solubility of a particular oral medication. Which experiment design setup would best help him answer his question?
Answer:
Prepare solutions of different acid concentrations, measure 50 milliliters of each into different beakers, and place the same type of medication of the same mass into the beaker
Explanation:
The experiment to test the effect of stomach acid concentration on the solubility of a particular oral medication will have the following configuration;
The independent variable = The concentration of the acid to which the medication is added
The dependent variable = The solubility of the medication in the acid concentration
The constant = The medication which is added to the acid concentration
The controls = The fixed mass and type of the particular medication and fixed volume of the different concentrations of the acid samples.
Which cell would doctors conclude is a cancerous mass?
A. A
B. B
C. C
D. C
The correct answer is A
Explanation:
Cancer including cancerous mass or tumors is caused by an abnormal and uncontrolled reproduction of cells. This means cell division occurs faster than normal and leads to damaged or malfunctioning cells. Moreover, in terms of the number of cells vs time, cancer leads to a high number of cells in a short time. This occurs in cell A because different from cells B, C, and D, this has increased the number of cells in a short time, while others have decreased over time or remain constant. According to this, the cell that is a cancerous mass is A.
Hydroponics is defined as the practice of growing plants without soil used to provide support or nutrients or ‘Soilless Farming'. How is ‘Hydroponics' an effective method of farming in arid and dry zones other Earth?
Answer:
Hydroponics solves the problem of unavailability of water in those arid and dry regions
Explanation:
As rightly stated in the question, hydroponics is a practice that involves the culturing of plants without the need for soil. Hydroponics procedure make use of a moisture-containing solution filled with nutrients.
This procedure of hydroponics, however, comes with some disadvantages but one major effectiveness it has in arid or dry regions is that it SOLVES THE PROBLEM OF WATER UNAVAILABILITY. When it comes to farming practice using soil, constant water supply is an unnegotiable criterion because water is needed for the growth of plants in the soil.
However, in arid regions, which are usually very dry due to lack of rainfall, the practice of hydroponics can substitute for soil farming in order not to cause food scarcity.
What happened to the compasses when a current flowed through the wire?
When listing the levels of organization in organisms from least complex to most complex, which level is just below organs in complexity? cell organism organ system tissue
Answer:
Tissue.
Explanation:
Cells work together to make tissues and tissues work together to make organs. I believe tissues are right under organs in terms of complexity.
The level of organization is defined by the simple to complex arrangement. The tissues are below the organs in the level of complexity. Thus, option d is correct.
What is the level of organization?The arrangement of the most simple to the complex structure in a hierarchical manner is called the level of organization. It makes the population and the community of the ecosystem.
The atom is the most simple level that aggregates to form a molecule that makes a cell. Cells with similar functions make the tissues. The tissues with various fucntions combine to form an organ.
An organ along with different organs makes an organ system. The various organ system with various roles and activities makes the organism. Many organisms make a population that results in a community, ecosystem, and biosphere.
Therefore, option d. the tissues make the organs.
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Bacteria are surrounded by?
Answer:
Structurally, a typical bacterium usually consists of (1) a cytoplasmic membrane surrounded by a peptidoglycan cell wall and maybe an outer membrane, (2) a fluid cytoplasm containing a nuclear region (nucleoid) and numerous ribosomes; and (3) often various external structures such as a glycocalyx, flagella, and pili.
Explanation:
A population is growing at a rate of 2, 4, 8, 16, 32. Which type of growth does this describe? linear logistic exponential negative
A population that is growing at a rate of 2, 4, 8, 16, 32 shows a type of growth known as exponential growth.
What is exponential growth?Exponential growth is a type of growth where quantity is increased in an order of magnitude for a given period of time.
In biology, exponential growth is seen in populations having sudden expansions.In conclusion, a population that is growing at a rate of 2, 4, 8, 16, 32 shows a type of growth known as exponential growth.
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a friend believes that studying the genetics of dead organisms offers little benefit to modern day humans do you agree with this statement to use information from the article to support your argument.
Studying the genetic ancestry of humans can help explain why some people have a higher or lower risk of certain diseases. Finding the genes related to certain diseases will help fuel new drugs and therapies. For example, the article explains that people with six copies of CLPS genes seem to have a lower risk of diabetes
Explanation:
According to me, the process of studying the genetics of dead organisms offers significant benefits to modern-day humans.
What is Genetics?Genetics may be defined as the branch of biology that deals with the study of heredity and variations that are remarkably controlled by genes.
The genetics of dead organisms reveals the process and methodology of past organisms. It illustrates how the differences in present organisms lead to the process of evolution.
It compares the physiology, psychology, genomic sequencing, alterations in the genetic arrangements, etc. It also allows us to understand new facts and changes that fascinate evolutionary questions.
Apart from this, modern technology makes the study of dead organisms more effective and significant with numerous benefits like recombinant DNA technology, DNA analysis, isolation, etc.
Therefore, the process of studying the genetics of dead organisms offers significant benefits to modern-day humans.
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what will happen if one part of the system fails to carry out its fanction properly?
Answer:
If one part of the system fails to carry out its function properly, the air we breathe cannot go to the lungs the transferring of oxygen in the blood will be affected. If this happens, a person will most likely have a difficulty in breathing which may lead to other complications or even death.
Explanation:
I hope it helped
Answer:
Hope it helps
Explanation:
If one part of the system fails to carry out its function properly, the air we breathe cannot go to the lungs the transferring of oxygen in the blood will be affected. ... Oxygen, as it enters our body, moves to a series of parts in the breathing system that are connected to each other and needs to work as one.
Can someone help me i got very confused
Answer:
D. student 4
Explanation:
I personally find this question slightly bewildering. It does definitely make you think. I decided your best answer choice would be D, because a dog wouldn't always be there, or the weeds.
If we mixed sodium and iron
then the result will be?
Answer:
u can't mix them
two solid metals can't form solution.
Sodium hydroxide and iron when it reacts with water the result will be tetrahydroxoferrate
What is one way to analyze the results of an experiment?
Answer: One way to analyze the results of an experiment by looking at the chemical and physical changes. Signs of a chemical change are bubbles or production of an odor. Signs of a physical change are change in color, shape, or size.
Which statement about lunar eclipses is false?
Select one:
a. They occur at least twice a year.
b. They cause the moon to disappear completely.
c. They can be seen from any place with a view of the moon.
d. They may last for hours.
Answer:
B
Explanation:
The moon won't completely disappear, but it will be cast in an eerie darkness the makes it easy to miss if you were not looking for the eclipse.
If an object is having a constant positive acceleration, what can we assume about the forces on it?
Answer:
If an object has a net force acting on it, it will accelerate. The object will speed up, slow down or change direction. ... If however, the forces are balanced (in equilibrium) and there is no net force, the object will not accelerate and the velocity will remain constant.
The force on the object is unbalanced.
Acceleration is the change in velocity per change in time of motion.
At constant velocity, the acceleration of an object will be zero.Increase in the change of velocity causes increase in acceleration in positive direction.A positive acceleration indicates increase in the motion of an object.According to Newton's second law of motion, the force applied to an object is directly proportional to the product of mass and acceleration of the object.
F = ma
If the net force on an object is balanced, the acceleration of the object will be zero because the object will move at velocityHowever, if the force on an object is unbalanced, the object will accelerate.
Thus, we can conclude that the force on the object is unbalanced.
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11. In which of the following examples will water move into the cells of the large intestine from the outside environment by the process of osmosis?
Osmosis occurs in the large intestine to transfer water from the feces into the neighboring cells.
What is the process of osmosis?Water is transported across cell membranes through diffusion and osmosis. The body reabsorbs absorbable solutes and electrolytes from meals (namely salt, potassium, and chloride ions).
The total solute concentrations and the permeabilities of the solutes in relation to water define the effective osmolality of a biological fluid, the large intestine to transfer water from the feces into the neighboring cells.
Water molecules move by osmosis across the cell membrane from a lower solute concentration to a higher solute concentration.
Therefore, osmosis, a kind of diffusion, is how water enters and exits the cell's large intestine to transfer water from the feces.
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Atoms have three subatomic particles: protons, neutrons, and electrons. ... Knowing what you know about the nucleus and the subatomic particles in the nucleus, what do you think is the charge of the nucleus of an atom? The nucleus of an atom has a positive charge because the proton is positive and the neutron is neutral.
The atom is positive.
Answer:
the atom is positive
Explanation:
What is the first stage of the nuclear fuel cycle? WILL GIVE BRAINLY AND 22 POINTS Fuel production Uranium mining Reprocessing Disposal
Answer is uranium mining.
Answer:
THE NUCLEAR FUEL CYCLE STARTS AS THE MINING OF URANIUM.IT THEN ENDS AT DISPOSAL OF NUCLEAR WASTE.WITH THE PROCESSES I NG OF USED FUELS AS AN OPTION FOR NUCLEAR ENERGYDoes a rock use energy
Answer:
No
Explanation:
A rock has no way of consuming energy as it is not a living organism, and cannot perform any processes to transform energy.
If viruses are not living, how do they cause disease?
Answer:
In an episode of the classic 1950s television comedy The Honeymooners, Brooklyn bus driver Ralph Kramden loudly explains to his wife, Alice, “You know that I know how easy you get the virus.” Half a century ago even regular folks like the Kramdens had some knowledge of viruses—as microscopic bringers of disease. Yet it is almost certain that they did not know exactly what a virus was. They were, and are, not alone.
Explanation:
its in the answer
Meat tenderizer contains an enzyme that interacts with meat. If meat is coated with tenderizer and then placed in a refrigerator for a short time, how would the enzyme be affected?
Answer:
The enzyme would be deactivated.
Explanation:
Enzymes are usually deactivated by low temperatures.
Enzymes are proteinous in nature, function by catalyzing biological reactions, and have a particular range of temperatures where they function optimally. Above these temperatures, the catalyzing attribute of enzymes gradually declines till they are denatured by high temperature and below the optimal temperature, their catalyzing attributes also decline. However, instead of being denatured by very low temperatures, they become deactivated instead.
fats are broken into saturated fats
Answer: saturated fats
Explanation:
Fats that are tightly packed with no double bonds between the fatty acids are called saturated fats. There are some exceptions, but most are solid at room temperature. Sources of saturated fat include: fatty pieces of meat such as beef and lamb.
what caused the movement of ocean currents?
Answer:
The heating up and cooling down of water. The winds also have effects
Explanation: