Answer:
perlite, vermiculite, diatomite, sand, mineral wool, and expanded clay are soil-free and fully non-organic in origin. Bark and peat are organic materials and are not fully non-organic.
5. Differentiate between:
a. Scientific study and general study
Select the features commonly present in a formal French garden.
topiaries
rock gardens
parterres
massed perennials
follies
bosquets
statues
torii
fountains
allees
Answer:
parteeres
Explanation:
rectangular reflecting pools or circular beds that play a geometrical counterpoint to the gardens right angled parteeres
Which of the following best expresses the consequences of a failure at any stage of a hydroponic system?
they are limited mostly to problems of overwatering
they are limited mostly to one plant needing isolation from other plants
they can cause domino effects cascading through the entire system
they can easily be prevented and are of little consequence
One of the likely consequences of a failure at any stage of a hydroponic system is that it can cause domino effects cascading through the entire system. Option 3.
Consequences of failures in a hydroponic systemIn a hydroponic system, each stage and component are interconnected and rely on one another for proper functioning. If there is a failure or issue at any stage of the system, it can disrupt the balance and functionality of the entire system.
For example, if there is a problem with nutrient delivery or imbalances in pH levels, it can affect the health and growth of plants throughout the system.
These issues can quickly spread and impact other plants, leading to a cascade of negative effects.
It is crucial to address and resolve any failures promptly to prevent further damage and maintain the overall health and productivity of the hydroponic system.
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I need the answers this makes no sense ngl
Answer:
For A - answer is organism 2
For B- answer is glucose(C6H12O6) and oxygen(O2)
For C- Chloroplast
Which of the following best validates why growers make use of greenhouses?
Responses
they reduce infection risk
they provide superior control of the growth environment
they reduce production costs
they provide crop production at a lower labor investment
Answer:
B They provide superior control of growth
Explain why greenhouse systems are preferred for leafy greens, seedlings, and flowers but are less often used for other crops.??
Greenhouse vegetables include tomatoes, capsicum, cucumbers, eggplants, etc. Pest control is best done with healthy seedlings and proper maintenance in greenhouses.
A greenhouse is a building made of a transparent material that allows natural light to enter. The main elements of a greenhouse, such as the structure, cover/glazing, and temperature control system, need to be designed correctly for the growth of plants.
The greenhouse effect is the name given to a number of crops that thrive in a greenhouse environment. These include salad greens, peppers, cucumbers, spinach, and tomatoes.
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Nature overcomes some natural disasters such as when a flooded mangrove forest or a Burnt forest are reborn study the photos on the right and give examples of how an old ecosystem might be destroyed and make way for a different ecosystem
write the phenotype and genotype
Explanation:
The concepts of phenotype and genotype are related to genetics.
The phenotype is generally called the external appearance of the living thing, which is formed by the genetic information and environmental effects.
Genotype is the genetic information that an organism carries in its DNA.
For example; Character A is the favorite black color. a is the blue color character.
While the Aa display shows the individual with black eyes in the phenotype, the genotype is expressed as heterozygous dominant black eyes.
Which of the following is the largest sector in the field of floriculture?
potted plants
cut plants
annual bedding plants
foliage plants
Answer:
The largest sector in the field of floriculture is potted plants.
why practical sciences is often left out by teachers ?
Practical sciences are sometimes left out by teachers due to limited time and resources in educational institutions and may prioritize theoretical knowledge over practical application.
Additionally, practical sciences often require specialized equipment, facilities, or materials, which may not be readily available in schools. Moreover, teachers may feel more comfortable with traditional teaching methods and may lack the training or expertise to effectively integrate practical sciences into their curriculum.
Standardized tests and assessment frameworks that focus on theoretical concepts further discourage the inclusion of practical sciences. However, recognizing the importance of hands-on learning experiences, efforts should be made to bridge this gap and promote the integration of practical sciences into educational settings.
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Which of the following substances used in soil-free mixes has a high silica count, offers good drainage, little water-retention, little if any nutritional value, and is comparatively heavy?
vermiculite
peat
sand
perlite
The substance used in soil-free mixes that has a high silica count, offers good drainage, little water retention, little if any nutritional value, and is comparatively heavy is sand.
The correct option is C.
What is the silica content of sand?Sand has a high silica content, which provides good drainage in soil-free mixes. It has little water-retention capacity, meaning it allows water to pass through quickly.
Sand generally has minimal nutritional value for plants. It is also relatively heavy compared to the other substances listed.
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Describe the role of various human activities that place stress upon the environment. Demonstrate an understanding of the interrelationship between humans and the physical environment. Identify several major environmental problems and assess how this affects our ability to live in a sustainable way
Human activities such as agriculture are impacting upon the natural ecosystems.
What role does human activities play?
Environmental issues can result from considerable environmental stress caused by human activity. Natural resource exploitation and consumption, pollutant production, habitat destruction, and ecosystem modification are all frequent components of these activities.
Intensive farming methods, such as cutting down trees to make way for farms and using chemical pesticides and fertilizers, can deteriorate soil quality, cause deforestation, and cause runoff to pollute water. Ecosystems are disturbed, biodiversity is decreased, and deforestation causes climate change by releasing carbon dioxide that was previously held in trees.
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Human activities, such as deforestation, contamination, overfishing, and nursery gas outflows, disturb the environment, jeopardizing supportability by undermining biodiversity and biological system wellbeing.
Role of various human activities that place stress upon the environmentHuman activities play a critical part in setting stress upon the environment, disturbing the fragile interrelationship between people and the physical environment.
Activities such as deforestation, mechanical contamination, overfishing, and nursery gas emanations contribute to major natural issues.
Deforestation leads to territory misfortune and expanded carbon dioxide levels, whereas mechanical contamination sullies discuss, water, and soil.
Overfishing disturbs marine environments and depletes angle populaces, and nursery gas emanations contribute to climate alteration.
These natural issues, in case, cleared out unaddressed, debilitate our capacity to live reasonably, jeopardizing biodiversity, clean discuss and water, and in general environmental well-being.
Accomplishing supportability requires adjusting human needs with natural preservation and advancing dependable asset administration.
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If the half life of an element was 430 years and you had 2000 atoms of this element, how long would it take to undergo complete radioactive decay? What year would it be when the element finished decaying?
part a.
it would take an estimated 2984 years for the element to undergo complete radioactive decay.
How do we calculate?N = N₀ * (1/2)[tex]^(^t ^/^ T^)[/tex]
N = final number of atoms remaining
N₀ = initial number of atoms
T = half-life of the element
0 = 2000 * (1/2)^(t / 430)
(1/2)^(t / 430) = 0
log₂((1/2)= log₂(0)
(t / 430) * log₂(1/2) = log₂(0)
0.01 = (1/2)^(t / 430)
log₂(0.01) = (t / 430) * log₂(1/2)
t = log₂(0.01) * 430 / log₂(1/2)
t = 2984 years
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Complete the following sentence.
A grower who wishes to enhance plant growth by adjusting the carbon dioxide levels in the greenhouse will use a(n) _____ gas analyzer to evaluate CO2 levels.
A grower who wishes to enhance plant growth by adjusting the carbon dioxide levels in the greenhouse can use a carbon dioxide (CO2) gas analyzer to evaluate CO2 levels.
The amount of carbon dioxide, methane, and nitrous oxide in the atmosphere of Earth may be measured using a glasshouse gas analyzer.
Studies of the air quality in the field, leak identification, and natural gas monitoring may all be done using a glasshouse gas analyzer that analyses CH4, CO2, and H2O.
TIGER OPTICS, A. With extreme precision and accuracy, the T-I Max AIR CO2 glasshouse gas analyzer can test CO2 levels in the air.
Nova Analytical Systems provides CO2 analyzers that detect carbon dioxide levels in parts-per-million (ppm) or as a percentage using infrared technology.
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Which phase are most cells currently in ?
cells are most currently in :
interphase
In which biome do animals have a thick layer of fat to keep them warm?
Answer:
tundra
Explanation:
Which of the following best describes the economic threshold in pest management?
the point at which treatment of the pest costs more than the pest damage
the point at which pest damage costs more than the potential value of the harvest
the point at which pest-management techniques increase profit
the point at which pest-management techniques are first employed
The point at which treatment of the pest costs more than the pest damage. Option A
What is the pest damage?In pest management, the term "economic threshold" refers to the pest population level at which the expense of implementing pest control measures outweighs any potential economic losses brought on by the pest. It is the point at which using pest management methods or treatments is financially viable.
Below this point, treatment might not be required because it would be more expensive to control the pest than any potential harm it might cause.
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Part D Consider the results of each solution. Did any one solution work best? Could you combine or modify the solutions to develop a better method for removing the oil from the water?
if scientists found a fossil in the middle layer that was 2 million years old, would they think Earth was more or less than 2 million years
If scientists found a fossil in the middle layer that was 2 million years old, they would conclude that Earth is more than 2 million years old based on the presence of older rock layers and fossils in lower layers.
Fossils provide valuable evidence for dating the age of the Earth and its geological history.
The principle of superposition, a fundamental concept in geology, states that in undisturbed rock layers, the oldest rocks are found at the bottom, while the youngest rocks are found at the top.
By finding a 2 million-year-old fossil in the middle layer, scientists can infer that the lower layers, which were formed before the middle layer, are older than 2 million years. Additionally, the presence of upper layers, formed after the middle layer, would suggest that Earth's age exceeds 2 million years.
Scientists use various dating methods, including radiometric dating, to determine the age of rocks and fossils.
These techniques analyze the isotopic decay of certain elements present in the rocks or fossils to estimate their age.
Through these methods, scientists can establish a more accurate timeline of Earth's history, revealing an age far greater than the age of the specific fossil found in the middle layer.
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recal what you know about the functions of the skeletal system to complete the following questions
The skeleton provides a framework for ⇒ muscle and soft tissue attachment.
Name one organ protected by the ribcage. ⇒ Heart, lungs, liver
Blood is formed in the:
red bone marrow.Calcium is released and deposited in the bones and blood to maintain homeostasis. calcium, phosphorus, minerals, fat is stored in the bones.When muscles: ⇒ contract, the bones attached to them move.
What is the skeletal systemThe bony structure of the skeleton serves as a foundation for providing support and attaching soft tissues. The heart is safeguarded by the ribcage.
The bone marrow is responsible for producing blood. In order to keep the body in balance, calcium is discharged and stored in both the bloodstream and bones. The bones serve as a storage site for calcium. The movement and locomotion of the body occurs as a result of bones connected to contracting muscles.
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See full text below
Recall what you know about the functions of the skeletal system to complete the following questions. The skeleton provides a framework for and soft tissue attachment. Name one organ protected by the ribcage. Blood is formed in the bone marrow. is released and deposited in the bones and blood to maintain homeostasis. is stored in the bones. When muscles , the bones attached to them move.
Week
1
Week
2
Week
3
Plant given fertilizer (height of
plant in centimeters)
6 cm
10 cm
12 cm
Plant not given fertilizer (height
of plant in centimeters)
3 cm
17 cm
5 cm
8 cm
Week
4
What conclusion can be drawn from this data?
10 cm
OA. Fertilizer does help plants grow faster.
B. Fertilizer only helps plants grow faster for one week.
C. No conclusions can be drawn from this data.
O D. Fertilizer does not help plants grow faster
The conclusion can be drawn from this data is C. No conclusions can be drawn from this data.
What does the data show?The data shows that the plant given fertilizer grew faster than the plant not given fertilizer in weeks 1 and 3, but the plant not given fertilizer grew faster in weeks 2 and 4. This suggests that there is no clear relationship between fertilizer and plant growth.
There are a number of possible explanations for this. One possibility is that the fertilizer is not effective. Another possibility is that the plants are not responding to the fertilizer in the same way. It is also possible that other factors, such as the amount of water or sunlight the plants receive, are affecting their growth.
To draw a conclusion about the effect of fertilizer on plant growth, it would be necessary to conduct a more controlled experiment. This experiment would need to include a larger sample size and control for other factors that could affect plant growth.
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do the usage of synthetic plant hormones for the modification of plant growth have any environmental implications
The usage of synthetic plant hormones for the modification of plant growth can have environmental implications.
Understanding the Effect of Synthetic Plant HormonesFactors to consider
1. Ecotoxicity: Synthetic plant hormones, if not properly regulated or used in excessive amounts, can pose risks to non-target organisms and ecosystems. They may affect the growth and development of other plants, beneficial insects, and microorganisms, potentially disrupting ecological balance.
2. Soil and Water Contamination: Improper application or disposal of synthetic plant hormones can lead to soil and water contamination. Runoff from treated fields or improper disposal of unused hormones may introduce these compounds into water bodies, potentially affecting aquatic organisms and overall water quality.
3. Resistance and Persistence: Repeated and excessive use of synthetic plant hormones can contribute to the development of resistance in target plant species. This can lead to the evolution of herbicide-resistant weed populations, requiring higher doses or different chemicals to achieve the desired effect. Moreover, some synthetic hormones may persist in the environment for extended periods, potentially impacting subsequent crops or natural vegetation.
4. Non-target Effects: Synthetic plant hormones may influence the growth and development of unintended plant species, leading to unintended consequences such as changes in biodiversity, alteration of natural plant communities, or interference with the natural ecological succession.
5. Human Health Concerns: The potential impacts of synthetic plant hormones on human health are an area of ongoing research. While these hormones are generally considered safe for use in agriculture when used according to regulations, there may be concerns related to exposure, residues, or indirect effects on food quality and safety.
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Which of the following styles makes use of follies as a design element of the garden?
Japanese garden
French formal garden
English landscape garden
English cottage garden
The English landscape garden is the style that uses follies as a design element of the garden. Option 3.
Follies and English landscape gardenFollies are architectural structures that serve primarily decorative purposes and are often whimsical or fantastical in nature.
They can take the form of ruins, temples, grottos, or other ornamental structures.
In English landscape gardens, follies are strategically placed within the landscape to create visual interest, focal points, or to evoke a sense of romanticism or nostalgia.
These gardens aim to mimic the natural landscape and often incorporate elements such as rolling hills, meandering paths, lakes, and woodlands. Follies are a key feature in this style, adding a touch of whimsy and intrigue to the overall design.
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The English landscape garden makes use of follies as a design element of the garden.
What are follies?Follies, whimsical architectural embellishments, serve as captivating elements employed to infuse charm and diversity into a garden. Ranging from petite gazebos to imposing ruins, they bestow a touch of enchantment.
The English landscape garden, an artistic movement that blossomed during the 18th century, arose as a response to the rigid structure of the French formal garden. English landscape gardens, characterized by their inclination towards a more organic and relaxed aesthetic, frequently incorporate follies as captivating focal points, enriching the overall allure and diversity of the setting.
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Describe the role of GA in a-amylase production and in germination. Provide evidence for your claim
Gibberellic acid (GA) plays a crucial role in a-amylase production and germination. GA stimulates the synthesis and release of a-amylase enzymes, which hydrolyze starch into sugars during germination. Experimental studies have demonstrated that the application of GA accelerates a-amylase production and enhances germination in various plant species
In terms of a-amylase production, GA stimulates the synthesis and release of this enzyme. a-amylase is responsible for breaking down starch into simpler sugars, which are then utilized by the plant for growth and development.
Studies have shown that applying GA to plant tissues or seeds results in an increased production of a-amylase, facilitating the conversion of stored starch into energy-rich sugars.
Regarding germination, GA is involved in breaking seed dormancy and promoting the growth of the embryonic plant.
It stimulates the production of hydrolytic enzymes like a-amylase, which enable the hydrolysis of starch reserves in the endosperm, providing the energy needed for germination and seedling establishment.
Additionally, GA helps in cell elongation and division, promoting the growth of the embryo and the emergence of the radicle.
Evidence for GA's role in both processes includes studies where the exogenous application of GA to seeds or plant tissues has been shown to enhance a-amylase production and promote germination.
Conversely, inhibiting GA synthesis or action results in reduced a-amylase activity and impaired germination. These findings support the critical involvement of GA in both a-amylase production and germination processes in plants.
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Which of the following systems draws heat from the ceiling to specific areas in a green house?
forced air heat
convection tubes
radiant heat
fan ventilation
Convection tubes systems draws heat from the ceiling to specific areas in a green house.
What is a green house?A greenhouse is a structure that grants individuals the ability to control climatic factors, including temperature and humidity. Various architectural styles of greenhouses exist, but typically, these structures incorporate expansive surfaces composed of translucent materials to harness the radiance and warmth of the sun.
Among the prevalent transparent materials employed in the roofs and walls of contemporary greenhouses, one finds sturdy plastics crafted from polycarbonate, pliable films manufactured from polyethylene, or even glass panels. When sunlight permeates the interior of a greenhouse, the internal temperature ascends, providing a protective haven for plants against inclement cold.
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what would happen if the hydrogen ion pumps in the tigers mitochondiar stopped functioning
If the hydrogen ion pumps in the tiger's mitochondria stopped functioning, it would have severe consequences on the process of oxidative phosphorylation and the overall production of ATP (adenosine triphosphate), which is the energy currency of cells.
The hydrogen ion pumps, also known as the electron transport chain complexes, play a crucial role in oxidative phosphorylation. They are responsible for creating a proton gradient across the inner mitochondrial membrane by pumping hydrogen ions (protons) from the mitochondrial matrix to the intermembrane space. This proton gradient is essential for the functioning of ATP synthase, an enzyme that synthesizes ATP.
Without functioning hydrogen ion pumps, the proton gradient would not be established. As a result, ATP synthase would not be able to generate ATP efficiently. This would lead to a significant reduction in ATP production, which is essential for various cellular processes, including muscle contraction, biosynthesis of molecules, active transport, and maintenance of cellular homeostasis.
The lack of ATP production would cause a rapid depletion of cellular energy reserves. Cells would struggle to carry out their normal functions, and the tiger would experience a loss of energy and overall decline in physical performance. Vital processes such as muscle movement, digestion, and even basic metabolic functions would be compromised.
Additionally, the accumulation of hydrogen ions within the mitochondrial matrix would disrupt the pH balance, affecting the efficiency of other metabolic pathways and potentially leading to cellular damage or dysfunction.
In summary, the dysfunction of hydrogen ion pumps in the tiger's mitochondria would severely impair ATP production, resulting in a decline in energy levels and overall cellular function. It would have significant implications for the tiger's survival and well-being.
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Refraction occurs when the amplitude of a wave changes as it goes from one medium to another. yes or no?
Yes, it is true that when Refraction occurs the amplitude of the wave changes as it travels from one medium to the other.
Refraction is generally termed as bending of light ray when light travels from one medium to the other medium. Bending highly depends on whether the Medium may be dense or light.
Refraction may also be defined as the redirection or change of the direction of the wave that is passing from one medium to the other. It can be most commonly observed, for example, refraction in glasses, lenses etc.
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Complete the following sentence.
The average failure rate of start-up greenhouse businesses is _____
percent, a figure in keeping with other start-up businesses in the United States.
The average failure rate of start-up greenhouse businesses is 60 percent, a figure in keeping with other start-up businesses in the United States.
What are greenhouse businesses?A horticultural enterprise pertains to a business engaged in cultivating plants within a greenhouse. Greenhouses are edifices enveloped in glass or plastic, affording growers the ability to regulate the internal environment. This grants them the opportunity to cultivate plants throughout the year, irrespective of external weather conditions.
Greenhouse businesses have the capacity to offer a diverse range of plants, encompassing blossoms, vegetables, herbs, and arboreal specimens. Additionally, they can supply plant-related merchandise, including seeds, fertilizers, and pesticides.
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Why did biologists introduce the Texas puma into Florida?
Biologists introduced the Texas puma into Florida to address the declining population of native panthers.
Introduction of the Texas PumaThe Texas puma, also known as the Florida panther's closest relative, was introduced to increase genetic diversity and strengthen the population's resilience.
By introducing new individuals into the Florida panther population, biologists aimed to reduce the risks associated with inbreeding and enhance the long-term survival prospects of the species.
This effort sought to restore balance to the ecosystem and ensure the preservation of this iconic and endangered big cat species.
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Reason why the crow blood is black
The reason why the crow is black can be traced to the presence of melanin pigments poduced by cells known as melanocytes.
Why is the crow's back black in color?The reason that explains why the corw's back is black is the presence of melanin pigments produed by the cells in their skin, hair, and feather. In humans, these pigments are also responsible for the balck color of individuals.
The amount of melanin produced by the body can determine how dark a peron or animal appears. So, melanin os the causative factor for blackness.
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