Explain why greenhouse systems are preferred for leafy greens, seedlings, and flowers but are less often used for other crops.??

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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Answer:

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Explanation:

When the body undergoes exercise, your body needs more energy, which means your tissues consume more oxygen than they do at rest.

Consuming more oxygen means you will also produce more carbon dioxide because your metabolic rate is elevated.

Answer:

During exercise, blood spends up to half the normal time (one second at rest) in the pulmonary capillaries due to the increase in cardiac output moving blood around the body more quickly.

Explanation:

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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:

When muscles: ⇒ contract, the bones attached to them move.

The 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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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.

Human activities such as agriculture are impacting upon the natural ecosystems.

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.

Human 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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Answer:

Canker.

Explanation:

Citrus canker is a bacteria that is highly infectious to all citrus crops.

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The point at which treatment of the pest costs more than the pest damage. Option A

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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Answer:

76 amino acids can be coded for 288 bases.

1. Earth Position 1:

  The Moon would be positioned on the opposite side of Earth from the Sun, within or near Earth's shadow. This configuration would result in a total lunar eclipse, where Earth blocks the sunlight from directly reaching the Moon.

2. Earth Position 2:

  The Moon would be positioned on the same side of Earth as the Sun but aligned in a straight line with Earth and the Sun. In this case, the Moon would pass through Earth's shadow, resulting in a total lunar eclipse.

3. Earth Position 3:

  The Moon would be positioned slightly to the right or left of Earth's shadow, but still within the range where it intersects with Earth's orbit. This position would cause a partial lunar eclipse, where only a portion of the Moon passes through Earth's shadow.

4. Earth Position 4:

  Similar to Position 2, the Moon would be on the same side of Earth as the Sun but aligned in a straight line. However, it would be slightly above or below Earth's shadow, causing a penumbral lunar eclipse. In this type of eclipse, the Moon passes through Earth's penumbra, the outer part of the shadow where sunlight is only partially blocked.

5. Earth Position 5:

  The Moon would be positioned on the opposite side of Earth from the Sun, within or near Earth's shadow. This configuration would result in another total lunar eclipse.

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Here are the eight different positions of Kepler-47c in its orbit around Stars A and B attached and shown at positions 2, 4, 6, and 8.

For each of Kepler-47c’s positions (1–8), its moon in the position on the dashed circle where a lunar eclipse could happen are positions 2, 4, 6, and 8.

A lunar eclipse can happen when the moon passes directly behind the Earth and is completely obscured from view. This can only happen when the moon is full, and when the Earth is between the moon and the sun. In the diagram, positions 2, 4, 6, and 8 all meet these criteria. In these positions, the moon is in the Earth’s shadow, and a lunar eclipse could happen.

In positions 1, 3, 5, and 7, the moon is not in the Earth’s shadow, and a lunar eclipse cannot happen. In these positions, the moon is either on the opposite side of the Earth from the sun, or it is in front of the sun.

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cells are most currently in :

interphase

The given art piece is considered to be Polynesian Art. So the correct option is option D.

Polynesia is divided into the East Polynesian and West Polynesian cultural groups. West Polynesian culture is characterized by a high population density. West Polynesia has strong marriage institutions and well-established judicial, monetary, and commercial customs. West Polynesia includes the groups,  Tonga, Samoa, and Fiji.

People were artists and craftspeople of exceptional skill. Simple things like fish hooks would be made to exact specifications for various catches and embellished even when the embellishment wasn’t part of the purpose. Stone and wood weapons were seen as more powerful the more beautifully crafted and embellished they were. In many island groups, weaving was an integral part of their culture, and gift-giving of woven articles was a long-standing tradition.

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The usage of synthetic plant hormones for the modification of plant growth can have environmental implications.

Factors 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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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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Answer:

The largest sector in the field of floriculture is potted plants.

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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Biologists introduced the Texas puma into Florida to address the declining population of native panthers.

The 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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Answer:

CRYSTAL SPRING COLLEGE will give you a great explanation located at Lekki - ibeju in eputu

Convection tubes systems draws heat from the ceiling to specific areas in 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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Scaffolding branches are the central branches that are preserved in central leader pruning.  Option 3.

Scaffolding branches refer to central branches that are preserved in central leader pruning.

These branches serve as the main structural framework of a tree and are selected to support future growth and development. Scaffolding branches are strategically chosen and maintained to provide a strong and balanced framework for the tree.

They act as the primary branches from which new growth will emerge in subsequent pruning and play a crucial role in shaping the overall structure of the tree.

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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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Lunar eclipses occur when the Earth is in the middle between the moon and the sun. The nus lights up the earth, and this last one projects its shadow on the moon. You will find moon positions in the attached files.

A lunar eclipse is a spatial phenomenon that occurs during a full moon when the Earth places between the Sun and the Moon.

At this point, the Sun lights up the Earth, making a shadow on the Moon and giving this last one a reddish or orange appearance.

In the exposed image, we need to draw the moon on a straight line opposite to the sun, and on the other side of the Earth.

To do it, we need to imagine a straight line,

This is how the sun will light up the Earth, and the planet will project its shadow on the moon.

To see the moon positions, and for a better understanding, look at the attached files.

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Answer:

C is the correct option.

Explanation:

Answer:

B They provide superior control of growth

Answer:

Glass greenhouses hold life's start. When conditions are just right, seeds grow.

Explanation:

Seeds awaken slowly; processes are bound to germinate; growth starts within.

The true purpose of glass greenhouses is that:

Glass greenhouses protect carefully produced plants. Plants are grown in greenhouses. A glass or plastic construction lets sunlight in and traps heat. Plants thrive in this warm, humid climate. Greenhouses lengthen the growing season, protect plants from severe weather, and boost food production. Seeds and cuttings germinate under favorable circumstances. This aids plant growth and reproduction. Glass greenhouses shelter and cultivate plants.

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The use of Zoysia grass is likely to produce the benefit of reducing erosion on embankments. Option 4.

Zoysia grass is a plant with dense growth habits with an extensive root system, which makes it effective in preventing soil erosion.

When planted on embankments or slopes, Zoysia grass helps stabilize the soil by binding it together with its roots, thereby reducing the risk of erosion caused by water runoff.

The dense growth of Zoysia grass also helps to trap sediment and slow down the movement of water, further reducing erosion.

While Zoysia grass can offer other advantages such as weed control and providing green growth when Bermuda grass is dormant, its ability to reduce erosion on embankments is one of its notable benefits.

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The reason why the crow is black can be traced to the presence of melanin pigments poduced by cells known as melanocytes.

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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The Integrated Pest Management technique most likely to achieve the control of weeds in a greenhouse is the use of black plastic floor covering.

Black plastic floor covering is a common weed control method in greenhouse environments.

It works by preventing sunlight from reaching the soil, thereby inhibiting weed seed germination and growth. By effectively blocking the light, the black plastic helps suppress weed growth and reduce competition for nutrients and resources.

Additionally, the plastic also helps conserve soil moisture and prevent weed seeds from being brought into the greenhouse through the soil.

While other techniques such as steam treating soil, eliminating standing water, and reducing human presence can contribute to overall weed management, the use of black plastic floor covering specifically targets weed control in the greenhouse environment.

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The conclusion can be drawn from this data is C. No conclusions can be drawn from this data.

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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