Answer:
The investigator needs to add a negative and a positive control. The positive control can be an auxin previously tested on this plant species, and the negative control should be a NON AUXIN SPRAYED plant, it can be sprayed with disstilled water. It is importan that all these plants are exactly under the same conditions (temperature, light, etc.), but with a distance between them that does not allow crossed contamination.
Explanation:
In this experiment, the investigator should establish a control by growing the same plant species without the auxin under the same conditions. This allows them to compare plant development with and without the growth hormone, verifying its effect.
To set up a proper control for this experiment, the investigator should maintain another set of six potted plant seedlings of the same species but without spraying them with auxin. These plants will then be grown under the same ideal conditions for the same duration. This control group will allow the investigator to compare the growth and development of plants without the hormone against those with the hormone, demonstrating any effects the growth hormone may have had.
Controls in experiments like these are crucial because they assist in determining the specificity of the effects of the variables being tested, in this case, the plant hormones. Without a control group, it would be impossible to definitively assign any observed changes to the application of auxin.
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thunderstorm.
c.
hurricane.
b.
tornado.
d.
flash flood.
The correct answer is Flash flood.
A sudden flood that is a result of heavy rain is called a flash flood. It lies in the low lying areas. The rain might sometimes accompany thunderstorm, hurricane, or snowfield. The difference between a flash flood and normal flood is that it lasts less than till 6 hours. In this case a high place can be used as a temporary shelter and once the flash flood is gone, anyone can shift to his or her normal routine.
There is a system of naming species in biology called binomial nomenclature. It is based on the use of two Latinized names for the identification and classification of each species and was created by the Swedish botanist Carl Linnaeus in the 18th century.
In this system each species is given a separate two-part scientific name, consisting of a genus name (the first part) and a species epithet (the second part). The species epithet is written in lower case, but the genus name begins with a capital letter. When written by hand, names are either underlined or printed in italics. Additionally, whenever a scientific name is used in prose, the full name is often italicized.
Learn more about Bionomial nomenclature, here:
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b. producers
c. the sun
d. water
Answer:
The correct answer would be c. the sun.
The sun is the ultimate source of energy in any ecosystem.
The solar energy is converted into chemical energy with the help of autotrophs or producers through the process of photosynthesis.
The small portion of this energy is transferred to the next trophic level and by end of 3-4 trophic levels, the entire energy is lost as heat or cellular respiration.
The sun is the ultimate source of energy in most ecosystems. This energy is transformed by producers like plants into a usable form through photosynthesis. Water and plants also have important roles in this process.
In ecosystems, the ultimate source of energy is typically the sun. The energy from the sun is initially harnessed by producers, or autotrophs, such as plants, through the process of photosynthesis. These organisms convert light energy into chemical energy that can be used by other organisms. Water and plants also play crucial roles in ecosystems. Water is necessary for photosynthesis, and plants are vital for converting the sun's energy into a form that other organisms can utilize.
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Homeostasis maintains a stable internal environment in organisms through feedback mechanisms. An example of a feedback mechanism is the regulation of blood glucose levels. If homeostasis fails, diseases such as diabetes may emerge.
Homeostasis is the process where an organism maintains a stable internal environment, which is crucial for survival. This stability is achieved through feedback mechanisms. These mechanisms monitor and adjust various biological systems within the body to maintain balance.
One example of a feedback mechanism in the human body is the regulation of blood glucose levels. When blood glucose levels rise, the pancreas produces insulin, which promotes the uptake of glucose into cells, reducing blood glucose levels. This is an example of a negative feedback mechanism because the effect of the response to the stimulus is to reduce the original stimulus. Conversely, if blood glucose levels fall, the pancreas produces glucagon, which prompts the liver to release stored glucose, thus increasing blood glucose levels.
If homeostasis fails in the human body, one specific result, beside death, could be the emergence of diseases such as diabetes. If the feedback mechanism for regulating blood glucose levels is impaired and the body doesn't produce enough insulin or the body's cells resist the effects of insulin, the result is high blood sugar and diabetic conditions.
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B. Flowers
C. Seeds
D. Cones
b. physical model
c. computer model
d. none of the above
Answer: Option A Idea model
Explanation: