Some students grew sunflowers in the biology laboratory. After three weeks they measured the height of each plant. The following figure shows the conditions of the experiment:
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Answer:
a. The factor changing among groups = The color of the light
b. The independent variable in this experiment = Color of light
c. The quantity measured at the end of the experiment = The height of the plant
d. The dependent variable is the height to which the plants grow
e. The control group is the Plant Group C, because they are subjected to normal light
f. The parts of the experiment kept constant are;
Temp
Humidity
Water Daily
Daily Light Exposure
g. The amount of nutrient available and atmospheric gases
h. The growth rate of plant is dependent on the color of the light in which the plant grows
Explanation:
Related Questions
Our current understanding of evolution is called a theory because it has been supported repeatedly as new discoveries have been made. proven to be exactly true as originally proposed. corroborated by data that were gathered during a single experiment. developed from the postulates of many scientists.
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Answer:
supported repeatedly as new discoveries have been made.
Explanation:
Evolution is called a theory yes this is a true statement as a theory can be changed ad it has records of evolution.
Scientists communicate approximately evolution as a theory, for instance, simply as they communicate approximately Einstein's rationalization of gravity as a theory. A theory is a concept approximately how something in nature works that have long gone thru rigorous checking out thru observations and experiments designed to show the concept proper or wrong. What is evolution?Evolution is a technique that affects adjustments withinside the genetic content material of a populace over time. There are trendy instructions for evolutionary change.
Thus it is clear that evolution is called a theory because it has been supported repeatedly as new discoveries have been made.
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Which of the following abnormalities demonstrates a cranial defect? Select one: a. Encephalocele b. Cystic hygroma c. Holoprosencephaly d. Agenesis of the corpus callosum
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Answer:
The correct answer is encephalocele.
Explanation:
The cystic hygroma is a malformation in the neck or upper abdominal area and holoprosencephaly is a malformation or alteration in the facial area, not in the cranial area.
The only one where the shape of the skull is altered (mainly the area of the calotte) is the encephalocele.
Do ionic bonds give electrons?
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Answer:
In ionic bonds, there is a transfer of electrons from one atom to another. Because of the transfer of electrons, the atoms that gain electrons become negatively charged, while the atoms that lose electrons will be positively charged. [1] If the atom has an additional electron, then the atom becomes a negative ion, known as anion. Meanwhile, if the atom loses electrons, then the atom becomes a positive ion or cation. [2] Because of the difference in charge between ions (positive ions and negative ions), the positive and negative ions will attract each other by electrostatic forces. This event is the basis of ionic bonding.
#sorry if wrong
Describe how an enzyme’s structure affects its function
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Explanation:
hope this could help you!!!!
4
adenine,thyamine,cytocine,guanine
Plants grow towards sunlight what characteristic of living things is this
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Answer:
Phototropism.
Explanation:
It refers to the tendency of plants to grow toward the light which they need to produce food for themselves.
Which element is in abundance in the crust but not in the mantle?
A. magnesium
B. carbon
C. oxygen
D. silicon
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Answer:
Carbon is in abundance in the crust but not in mantle
A microbiologist is attempting to determine the size of a microbial population and has employed several methods. She noticed that the direct count she obtained using a counting chamber and microscope was much higher than her estimate from doing a viable plate count. This discrepancy was encountered during multiple trials. What is the most likely reason for the discrepancy
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Answer:
The options are
A. She did not correctly do the serial dilutions to the viable plate count
B. Many organisms viewed during the direct count may be dead
C. The organisms were not readily cultured on the viable count, either because many were dead or because the medium and growth conditions used for the viable count will not support the growth of the microorganism
D. The medium and growth conditions used for the viable count will not support the growth of the organisms
The answer is C. The organisms were not readily cultured on the viable count, either because many were dead or because the medium and growth conditions used for the viable count will not support the growth of the microorganism
Explanation:
The discrepancy encountered during multiple trials which involved noticing that the direct count she obtained using a counting chamber and microscope was much higher than her estimate from doing a viable plate count was most likely as a result of the organisms were not readily cultured on the viable count, either because many were dead or because the medium and growth conditions used for the viable count will not support the growth of the microorganism.
State the differences between a typical Plant cell and an animal cell.
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Formed elements in blood are ______, and plasma is _______. Select one: a. blood clots; proteins b. mostly lipids; the matrix c. the cells; the liquid portion of blood d. lacking in protein; regulator of blood osmolality e. acellular; cellular
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Answer:
option A is correct
Explanation:
Formed elements in blood are blood clots and plasma is proteins. Hence option a is correct.
What is blood?Blood is defined as a fluid that circulates regularly and gives the organism nutrients, oxygen, and waste elimination. Blood is pumped into the pulmonary arteries in the lungs from the right ventricle after entering the right atrium from the body. After absorbing oxygen, the blood returns to the heart through the pulmonary veins, passing through the left atrium, left ventricle, and aorta before leaving the body through the tissues.
In plasma, there are 8% to 9% solids and 91% to 92% of water. It primarily consists of: Blood clotting is aided by coagulants, particularly fibrinogen. Albumin and globulin are two plasma proteins that contribute to keeping the colloidal osmotic pressure at 25 mmHg.
Thus, formed elements in blood are blood clots and plasma is proteins. Hence option a is correct.
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A population of bacteria sees an increase in the number of bacteria resistant to a certain antibiotic over a number of generations. This is known as ______________.
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Answer: MICROEVOLUTION
Explanation: Microevolution simply means those changes in the alleles frequencies of an organism over time.
In other words,we will say that microevolution is the generation to generation change in a population's frequencies of alleles.
These changes can occur due to natural or artificial selection,
Gene flow, mutation and genetic drift.
From the question asked,when a population of bacteria sees an increase in the number of bacteria resistant to a certain antibiotic over a number of generations,it is simply known as microevolution.
Where is most of Earth’s 3 percent of fresh water found? oceans ice water vapor lakes
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Answer:
I feel like it should be ice.
Explanation:
most of that three percent is inaccessible. Over 68 percent of the fresh water on Earth is found in icecaps and glaciers, and just over 30 percent is found in groundwater. Only about 0.3 percent of our freshwater is found in the surface water of lakes, rivers, and swamps.
About 3% of fresh water supply on earth, most of it is bound up as ice in the polar ice caps.
What is Fresh water?
The term fresh water is a term that is used to describe the water that can be used for drinking as well as other functions. It so different from the salty water that can be found in the oceans.
Although there is only about 3% of fresh water supply on earth, most of it is bound up as ice in the polar ice caps.
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Necrosis is the result of cellular injury that does not allow for cellular adaptation because it is which of the following? (Select all that apply.) Too severe Too prolonged Acute in nature Programmed into the cell itself A result of a disrupted blood supply
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Answer:
Too severe
Too prolonged
Acute in nature
Explanation:
Necrosis is can lead to death of a cell, it results from external damage to cell such a s diseases and infection.
Necrosis will not allow other cellular activities because its is acute, any cell affected by necrosis will die premature leading to stop of activities on the body part.
Necrosis is a prolonged sickness that takes a long time, it may require the removal of the dead cell for rejuvenation of new body cells.
Therefore, a damage to Because will not allow for cellular adaptation in that part of the body as it leads to the death of the cell.
does sound travel at the same speed through all materials
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Answer:
no
Explanation:
Sound travels fastest in liquid than in air and than in solid
Water> Air> Solid
Hope it helps :)
Answer:yes
Explanation:
what are the respiratory organs of different animals?(list out)
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Answer:
Fish and prawns = through gills
Frog = through lungs but also uses skin and lining of mouth for respiration
Amphibians,mammals and birds = through lungs
Tapeworms,earth worms and leeches = through body wall or skin
Amoeba and other unicellular animals = through plasma membrane
Explanation:
How would siamangs be affected if the rain forests they live in produced less fruit? Explain your reasoning.
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Answer:
Siamangs are arboreal,in habitat.They are species of gibbons found in the rain forest. They are skillful at moving among tree branches,their swift movement made them to escape predators.They are very noisy.
These animals are light weight because of light bones.Their head is small and round in shape.They have long arms,longer than the legs.Their body is slim.
75 of their diet is made up of fruits.They are omnivores like human thus they eat plants parts,insects, eggs of small birds etc.
They are endangered species.This is because of rapid deforestation of the rain forest habitats for developments. If 75% of their diet (which is fruits is not available)due to less fruits production, definitely they will be endangered and go to extinction from starvation as other sources of food would not sustain them.
Explanation:
ASAP!!!!!!!!!!!!
Write a paragraph explaining the flow of matter through your food web.
I WILL ATTACH A SCREENSHOT OF THE FOOD WEB
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Answer:
Explanation:
The flow of matter is connecting to all of the subjects involved. Several animals benefit off of the plants, then their predators benefit off of them, and so on. If even one of the factors of this food web were to go extinct, the entire thing would be messed up.
what is a scientific hypothesis? what characteristics must a hypothesis have to be useful in science?
Answers
Answer:
A scientific hypothesis must meet two criteria:
Explanation:
A scientific hypothesis must be testable. A scientific hypothesis must be falsifiable. hope this helps you :) god loves you :)
A scientific hypothesis proposes an explanation for an event that happens. We can observe it but not explain it, so we suggest a possible explanation. The characteristics that a hypothesis has to have are:
TestabilityFalsability
A scientific hypothesis suggests an explanation for something that we observe in nature but can not explain. We formulate them using the format if/then. In the first part, we propose the possibility with if. In the second part, we propose the outcome with then. For example, If humans don't eat meat, then they lack Ferrum.
The two characteristics that a scientific hypothesis must have are:
Testability:Scientists have to be able to do experiments to get information and prove the hypothesis to be correct or not.
Falsability:It means that the hypothesis, after experiments and observations, can be refuted.
In conclusion, a scientific hypothesis suggests a solution or explanation. It must have the characteristics of testability and falsifiability to be useful in science.
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If a scientist is studying the evolutionary relationship between two species of birds, what tool could she use to help her chart their relationship
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Scientists collect information that allows them to make evolutionary connections between organisms. Similar to detective work, scientists must use evidence to uncover the facts. In the case of phylogeny, evolutionary investigations focus on two types of evidence: morphologic (form and function) and genetic.
Directions
1. Use the library, internet, and other educational resources to research nuclear energy.
2. Write a three-paragraph report on what you have learned. Be sure to include the uses of nuclear power, how it is
generated, and the impact it has on the environment. Also, answer the question, "Is nuclear energy renewable?" THREE PARAGRAPHS PLEASE HELP !!!!!!!
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Answer:
Explanation:
Australopithecina or Hominina is a subtribe in the tribe Hominini. The members of the subtribe are generally Australopithecus (cladistically including the genera Homo, Paranthropus,[2] and Kenyanthropus), and it typically includes the earlier Ardipithecus, Orrorin, Sahelanthropus, and Graecopithecus. All these related species are now sometimes collectively termed australopithecines or homininians.[3][4] They are the extinct, close relatives of humans and, with the extant genus Homo, comprise the human clade. Members of the human clade, i.e. the Hominini after the split from the chimpanzees, are now called Hominina[5] (see Hominidae; terms "hominids" and hominins).
While none of the groups normally directly assigned to this group survived, the australopithecines do not appear to be literally extinct (in the sense of having no living descendants) as the genera Kenyanthropus, Paranthropus and Homo probably emerged as sister of a late Australopithecus species such as A. africanus and/or A. sediba.
The terms australopithecine, et al., come from a former classification as members of a distinct subfamily, the Australopithecinae.[6] Members of Australopithecus are sometimes referred to as the "gracile australopithecines", while Paranthropus are called the "robust australopithecines".[7][8]
The australopithecines occurred in the Plio-Pleistocene era and were bipedal, and they were dentally similar to humans, but with a brain size not much larger than that of modern apes, with lesser encephalization than in the genus Homo.[9] Humans (genus Homo) may have descended from australopithecine ancestors and the genera Ardipithecus, Orrorin, Sahelanthropus, and Graecopithecus are the possible ancestors of the australopithecines.[8]
The generation of radioactive wastes such spent (used) reactor fuel, uranium mill tailings, and other radioactive wastes is a significant environmental hazard associated with nuclear power.
What impact of nuclear power, energy on the environment?Nuclear energy is still readily available, despite the fact that it isn't strictly renewable (since there is only a finite amount of uranium on Earth).
Additionally, even though using nuclear energy to produce electricity is a carbon-free process, building new nuclear energy facilities and mining the uranium fuel have their own environmental consequences.
For millions of years, these substances may continue to be radioactive and hazardous to human health. The trash that nuclear power generates is the most urgent environmental concern.
During the course of a nuclear power plant's operation, a few different types of radioactive material are created, most notably used reactor fuel and the tailings from uranium mills.
Therefore, These pose numerous risks to the health of both people and the environment if they are not handled and disposed of properly.
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The nucleus of an atom contains
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Answer:
The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).
Explanation:
Every day, people cook with and consume a variety of foods that contain lipids. Some foods are healthier sources of
lipids than others. The table shows the amount of saturated fat in various foods.
Food (1 tbs or 14 g)
Olive oil
Margarine
Butter
Lard
Canola oil
Amount of Saturated Fat in Foods
Saturated fat (g)
2
2
7
1
Which food is the least healthy source of lipids, based on the data in the table?
margarine
lard
butter
canola oil
Answers
Answer:
C
Explanation:
it has more fat then the rest
i just took the test too
Answer:
butter
Explanation:
A student is studying the movement of an object undergoing uniform motion.
What is the velocity of the object?
А Its velocity is zero.
B Its velocity is increasing.
с. Its velocity is decreasing,
D . Its velocity is constant.
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Answer:
Explanation:
its velocity is constant
how to make backing soda
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Answer:
The soda ash is obtained in one of two ways: it can be manufactured by passing carbon dioxide and ammonia through a concentrated solution of sodium chloride (table salt). In our case, it is mined in the form of an ore called trona.
Farmers try a new pesticide to prevent damage to their crops. They plant 3 fields. #1 has traditional pesticide. #2 has a new environmentally-friendly pesticide. #3 is left untreated and will be used as a control group. If field #2 has pest damage similar to field #3, you might conclude that...
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Which of the following is consumed by producers?
A. Primary consumers
B. Tertiary consumers
C. Secondary consumers
D. Producers make their food
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A stroke victim has great difficulty moving his right hand and right leg. He also has trouble speaking. Which of his cerebral hemispheres is most likely to have been damaged
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Answer:
The correct answer is left cerebral hemisphere.
Explanation:
The left cerebral hemisphere of the brain is accountable for the motor control of the right side of the body, for sensory stimulus from the body’s right side, for analysis and calculations, for the speech, comprehension, and language, for the recognition of letters, words, and numbers, and for time and sequencing.
The left cerebral hemisphere is accountable for the processing of the sensory information and motor information for the body’s right side. Thus, as left cerebral hemisphere monitors the movement of the body's right side, so, based on the extremity of the stroke, which may result in motor skill impairment or functional loss of the right side of the body, shows that the left side of the brain has got affected.
The cerebral hemisphere most likely damaged in this person is the LEFT hemisphere.
The cerebrum can be divided into two major hemispheres known as the right and left cerebral hemispheres.The left cerebral hemisphere is involved in the control o the right side of the body. This hemisphere (left hemisphere) is associated with science and/or mathematical skills, language functions (e.g., grammar, vocabulary), etc.In conclusion, the cerebral hemisphere most likely damaged in this person is the LEFT hemisphere.
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Why does the word antibiotic suggest that these medications would be ineffective against viruses?
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Answer:
Antibiotics cannot kill viruses because bacteria and viruses have different mechanisms and machinery to survive and replicate. The antibiotic has no “target” to attack in a virus. However, antiviral medications and vaccines are specific for viruses.
which of these particles have the biggest impact on the elements mass?
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Answer:
Protons and neutrons
Explanation:
On an annual basis, what is the net result of the contributions/removals of CO2 from the atmosphere due to global photosynthesis and respiration
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Answer:
The correct answer is : approximately 3 gT yr^-1 decrease
Explanation:
Carbon dioxide is contribute and removed from the atmosphere by various type of activities that are human activities, biological input or biological removal and geological input or geological removal.
Adding carbon dioxide can be from biological inputs mainly respiration and removed from atmosphere mainly through biological removal mainly photosynthesis.
Both photosynthesis are complementary metabolic process that play major role of adding and removal of carbon dioxide. There is a decrease of 3gT yr^-1 approximately on the annual basis due to these biological process.
Abe drank 5712 mL (milliliters) of diet coke. His wife Martha drank 7.04L of diet coke. How much more diet coke did Martha drink
IN LITERS? SHOW YOUR WORK
Answers
Answer:
Martha drank 1328mL or 1.328 Litres more of diet coke
Explanation:
The first step in solving this problem is to convert the two quantities to the same units.
For this problem, we can choose to work in milliliters.
Converting 7.04L to milliliters
To do this we simply multiply by 1000 because 1000mL makes one Litre.
7.04 X 1000 = 7040 mL
Once the two quantities are in the same units, the next step is to subtract them.
7040 mL - 5712 mL = 1328mL
Therefore Martha drank 1328mL or 1.328 Litres more of diet coke