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 terms refers to a system in which plants are grown in tanks of non-circulating water, demanding regular evaluation of nutrient levels and health of tanks?
medium culture
static solution
solution culture
Hoagland solution
The system in which plants are grown in tanks of non-circulating water, demanding regular evaluation of nutrient levels and health of tanks is known as static solution culture.
What is static solution culture?Static solution culture, referred to as passive hydroponics or reservoir hydroponics, denotes a technique for cultivating plants devoid of soil. Within this approach, plants are upheld in a nutrient-abundant solution that perpetually permeates their roots.
Unlike active hydroponic systems that employ pumps to circulate the nutrient solution, static solution culture relies upon the innate capillary action and adeptness of the growing medium to furnish the plants with essential nutrients.
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Name two different types of organic compounds or molecules in the fruit juice
Two different types of organic compounds or molecules commonly found in fruit juice are carbohydrates and organic acids.
Fruit juice typically contains various types of carbohydrates, including simple sugars such as fructose and glucose. These carbohydrates provide sweetness and energy.
Fruit juice contains organic acids that contribute to its flavor and acidity. Examples of organic acids commonly found in fruit juice include citric acid (found in citrus fruits), malic acid (found in apples), and tartaric acid (found in grapes). These organic acids give fruit juice its characteristic tangy taste.
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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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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?
Select the soil-free ingredients that are fully non-organic in origin.
perlite
vermiculite
diatomite
sand
mineral wool
bark
peat
expanded clay
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.
CHAPTER 4
LESSON
2
READING TOOL Main Idea and Details As you read your textbook, identify the
main ideas and details or evidence that support the main ideas. Use the lesson
headings to organize the main ideas and details. Record your work in the table.
Two examples are entered for you.
Food Chains
Heading
Food Chains and Food Webs
Energy Flow in Ecosystems
Food Webs
• Food Chains Within Food Webs
• Decomposers and
Detritivores in Food Webs
Food Webs and Disturbance
Ecological Pyramids
Pyramids of Energy
Pyramids of Biomass Numbers
4 Chapter 4 Ecosystems
Main Idea
A food chain shows how
energy transfers through
feeding relationships.
Details/Evidence
On average, about 10% of the
energy is transferred from one
trophic level to the next.
Copyright © by Savvas Learning Company LLC. All Rights Reserved.
The main ideas and details for the lesson on food chains and food webs is attached below in a table.
What is Food Chains and Food Webs?A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another. A food web is a more complex system of interconnected food chains.
In a food chain, each organism occupies a different trophic level. The first trophic level is made up of producers, which are organisms that can make their own food. The second trophic level is made up of primary consumers, which eat producers. The third trophic level is made up of secondary consumers, which eat primary consumers. The fourth trophic level is made up of tertiary consumers, which eat secondary consumers. And so on.
Food webs show how energy flows through an ecosystem more accurately than food chains. This is because food webs take into account the fact that organisms can eat more than one type of food. For example, a fox might eat rabbits, mice, and birds. This means that the fox is connected to three different food chains.
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With asexual reproduction is the genetic information the same or different?
Answer:
same
Explanation:
Asexual reproduction gives rise to two physically and genetically identical daughter cells. Thus, the genetic information remains the same.
In asexual reproduction, the daughter cells divide through the process of mitosis, which results in two daughter cells from one parent cell.
In mitosis, the chromosomes which are duplicated segregate into the two emerging cells around which then a nuclear membrane forms. In this case, there is no recombination by crossing-over or chiasmata formation that happens in the case of meiosis.
It is the recombination by crossing-over or chiasmata formation that results in varying genetic information.
Thus, as these processes do not happen in mitosis, genetic information remains the same.
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there are different ___ of genes that code for all the differnt traits organisms can express
There are different alleles of genes that code for all the different traits organisms can express.
Even though there are 50,000 genes in every cell, only about 10% of them are expressed or switched on in any specific cell type.
Only a small fraction of a cell’s genes are transcribed at any given time. The variation in gene expression profiles among different cell types is due to the presence or absence of different sets of transcription regulatory factors. Some regulatory factors are designed to facilitate transcription, while others are designed to inhibit or inhibit transcription.
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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.
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.
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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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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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
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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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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Assume you are looking for microorganisms in a tissue sample from a lung biopsy obtained from a patient sick with pneumonia. Microbes first become visible under the 40X high-dry lens, and can be seen in more detail under the 100X oil immersion lens. You determine that you are likely looking at bacterial cells.
Why is it unlikely that these are archaeal cells?
Why is not possible that these are viral particles?
Answer:
CRYSTAL SPRING COLLEGE will give you a great explanation located at Lekki - ibeju in eputu
Order the life cycle of very high-mass stars Nebula , protostar, red supergiant, supernova, average star and black hole ?
Helppppppppppppp
......................................
Answer:
A triangleeeeeeeeeeeeeeeeeeeeeeeee
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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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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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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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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5. Differentiate between:
a. Scientific study and general study
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.
What is the relationship between segments and septa?
Segments and septa are related anatomical structures found in various organisms, particularly in arthropods and annelids.
Segments: Segments are the division of the body into distinct repetitive units, often externally visible as repeated body parts. Examples include earthworms, millipedes, centipedes, and insects.
Septa: Septa are partitions or walls that separate individual segments or compartments within an organism's body, providing structural support and creating distinct compartments. They can be found internally or externally, dividing the body surface into discrete units.
Organisation, structure, and coordination are provided by segments and septa within the bodies of segmented organisms, enabling specialised functions within each segment while preserving the integrity of the entire body. Depending on the organism and the purpose they serve, septa may be membranous or more rigid in structure. Septa in segmented animals provide support and stop internal structures from moving or being displaced, preserving the integrity and functionality of each segment.
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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
question is the screenshot
The possibility that it would be red eyed would be 75%. Option D
What is the Punnet square?A Punnett square is a genetics tool used to forecast the potential allele combinations in the progeny of a cross between two individuals. It bears the name Reginald Punnett after the British geneticist who created it.
Each box in the Punnett square represents a potential combination of alleles from the parents, and it typically consists of a square grid with boxes. The top of the grid lists the alleles of one parent, and the left side lists the alleles of the other parent.
By the use of the Punnet square that we have shown in the image attached, we can see that the possibility of the white eyes would be 75%.
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heeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeelp
Answer:
country B is more developed country