Through the process of photosynthesis, plants remove carbon dioxide from the air, while producing oxygen and sugar. In space, plants canl serve two main functions: oxygen production and food supply. A plant’s ability to supply the oxygen needs for a person depends largely on the species of plant and the intensity and quality of light it receives. Plant systems can also be used to help purify wastewater. Water evaporates from the leaves and resultant humidity can be condensed as a source of clean water. At very high light intensities, wheat could supply much of one human’s food and all their oxygen needs from an area as small as 15 square meters. At moderate light intensities, a mix of crops could supply a more complete diet for one person from about 50 square meters.

Your task is to design a plant growth chamber to be placed on the moon. You brainstorm with your team and come up with the following concerns"
I. The moon has no atmosphere
II. The moon's surface temperature ranges from -193C to 111C, depending on location and time of day.
III. Day length = about 27 Earth days
IV. Acceleration due to gravity = 1.6m/sec/sec (1/6 of Earth's)
V. No visible water
Consider items I - V. Which item(s) pose the biggest issue(s) with the task at hand: plants undergoing photosynthesis?
A) I.
B) I. and V.
C) I., III., and V
D) All five choices

Answer:

The answer is B. Fact

Explanation:

A hypothesis is the step of the scientific method in which an opinion is given about an environmental event that has been observed and analyzed. This hypothesis is generated with the purpose of answering a question of the "Why" of the observer events, and must always be experienced and demonstrated to know its truthfulness.

Since Jan's hypothesis, after having been tested, obtained good results, positive conclusions can be drawn from this hypothesis and can be considered as a scientific fact, because it has the approval of the scientific method.

Competition in an ecosystem increases stability by promoting biodiversity and ecosystem function. Different species specialize in utilizing specific resources or environmental conditions, resulting in more efficient energy flow and nutrient recycling. Higher biodiversity also increases ecosystem efficiency and productivity, enhancing stability.

Competition in an ecosystem increases stability by promoting biodiversity and ecosystem function. When multiple species compete for limited resources, different species adapt to specialize in utilizing specific resources or environmental conditions. This complementary resource use leads to more efficient energy flow and nutrient recycling, making the ecosystem more stable and resistant to perturbations. Additionally, higher biodiversity increases ecosystem efficiency and productivity, further contributing to stability.

Answer:

for plato users social sciences

Explanation:

got them all right

In genetics, the physical characteristics are referred as phenotype. Each character such as hair color in offspring is determined by a pair of genes.  One gene is inherited from father and other gene is inherited from mother. The phenotype is determined by the dominant gene. The recessive gene of a pair does not show its effect in heterozygous condition. Therefore, the offspring inherits a dominant gene and a recessive gene then the dominant gene will show the character. This is called Mendel’s law of dominance.

The physical factors are referred as phenotype. Each factor such as hair color in offspring is specified by a pair of genes.  One gene is inherited from father and other gene is inherited from mother.

Hair color changes result not only from modification of melanin production but also from alters in the hair structure itself, altering its visual properties.

A mixture of genetic, metabolic, nutritional, and developed disorders result in hair color changes.

Thus,  Each factor such as hair color in offspring is specified by a pair of genes.  genes are inherited from both parents.

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In hyponatremia, brain tissue responds differently from other tissues due to the presence of neurons, the additional protection of the blood-brain barrier, and the specific osmotic balance required for its function. The excess water induced by hyponatremia causes neurons to swell which can lead to brain damage or death.

The difference of brain tissue from other tissues during hyponatremia is greatly influenced by the brain's unique characteristics and the way it responds to low sodium levels in the body. Hyponatremia is a condition characterised by a decrease in blood sodium levels, which can result from an imbalance of sodium in the body's fluid compartments or dilution of sodium due to water retention. This condition can trigger increased entry of water into cells via osmosis, because the concentration of solutes within the cell is greater than the concentration in the diluted extracellular fluid.

While this water influx can cause swelling or edema in various kinds of cells, it affects brain cells or neurons quite significantly. The brain, as a part of the central nervous system, is packed with neurons which are highly sensitive to changes in their surrounding environment. The excess water entering neurons during hyponatremia can cause the cells to swell. This swelling of neurons in the brain can lead to severe consequences, potentially resulting in brain damage or even death.

Furthermore, the brain is protected by the blood-brain barrier which limits the interaction of circulating materials with the central nervous system. Therefore, the impact of hyponatremia on the brain might be different compared to other tissues because of this additional layer of defence. Additionally, the osmotic balance between water and spinal fluid in the brain is crucial to its function, and any imbalance could lead to critical conditions.

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Hyponatremia causes brain tissue to behave differently due to its sensitivity to changes in sodium levels and water balance. The Blood Brain Barrier emphasizes the need for stringent regulation to prevent brain damage. Timely medical intervention is crucial to avoid severe neurological consequences.

In hyponatremia, brain tissue behaves differently compared to other tissues because of its sensitivity to changes in sodium levels and water balance. When the blood sodium decreases due to conditions like water retention or congestive heart failure, water enters cells by osmosis, which can result in cell swelling. Specifically, the swelling of neurons in the brain can be dangerous, leading to brain damage or death. The brain is particularly vulnerable during hyponatremia because neurons cannot accommodate excessive swelling without causing symptoms like nausea, vomiting, headache, and even coma.

Furthermore, the presence of the Blood Brain Barrier (BBB) emphasizes the need for stringent regulation of the brain's microenvironment, including potassium and sodium ions, to maintain neuronal function and prevent brain tissue damage.

Biological lipids are a chemically diverse group of organic compounds which are insoluble or only poorly soluble in water.

The basic structure of the plasma membrane is the lipid bilayer. The three classes of lipid molecules present in the lipid bilayer are phospholipid, glycolipids and sterol.

So, the major type of lipid found in cell membrane is phospholipid.

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The right answer is solid.

A waste is an object or substance that has been physically or chemically impaired or is no longer usable and / or is intended for disposal or recycling.

These wastes are difficult to eliminate without causing deleterious effects. In Asia-Pacific, 90% of urban solid waste ends up in a wild dump, and it is one of the first sources of diseases. In Mumbai, more than 12 percent of urban solid waste is burned in cities or landfills, polluting the air and soil.

Assuming the options are:

    The best option would be 4. Medical Books, as magazine ads and online articles are typically not reliable sources of information. A growth chart is irrelevant to the dry skin.

To sketch the human body and show the sagittal, transverse, and frontal (coronal) planes, draw a vertical line for the sagittal plane splitting the body into right and left parts, a horizontal line for the transverse plane dividing into upper and lower portions, and another vertical line for the frontal plane separating the front and back sections of the body.

The question involves sketching the outline of a human body and indicating examples of three different anatomical sections: sagittal, transverse, and frontal (coronal) planes.

A sagittal plane runs vertically through the body, dividing it into right and left parts. If the division is exactly in the middle, creating two equal halves, it is referred to as a midsagittal plane. When illustrating this on a human body sketch, one would draw a vertical line from the head down the middle of the body to the feet.

The transverse plane (or horizontal plane) runs parallel to the ground and divides the body into upper (superior) and lower (inferior) portions. This is often shown as a horizontal line, typically across the midsection of the body.

The frontal (or coronal) plane runs vertically as well, but it divides the body into anterior (front) and posterior (back) sections. To indicate this on a sketch, one would draw a line from one side of the body to the other, passing through the shoulders.

Answer:

Gateway substance on regular usage, make an individual habitual usage of same or more harmful drugs

Explanation:

Any drug which has the capabilities of  becoming a mode of drug addiction for reuse again and again on usage for a short time period, then such drugs are called gateway substance.

Some common examples of gateway substance are alcohol, marijuana, nicotine. cocaine, heroin etc.

The gate way substance increase chances of an individual to take other drugs as it reduces the decision making capabilities of an individual

There are high chances that use of gateway substance can lead to dependence on more dangerous, addicting substances

A chemical indicator is what shows the acidity of items aka liquids by measuring how acidic the item is.

Chemical indicators are used to check whether the requirements for a particular sterilization process have been completed in order to accomplish sterilization.

Chemical indicators make use of one or more substances that, when exposed to specific essential conditions like time, temperature, and sterilant, change physically or chemically in a way that is discernible to the human eye.

A steam indication strip, in which the chemical indicator employs a chemical pellet that transforms from a solid to a liquid phase when exposed to steam, is an illustration of a chemical indicator design that changes physically.

Therefore, A chemical indicator is what shows the acidity of items aka liquids by measuring how acidic the item is.

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Answer:

Option C, It helps save time and money by finding the most effective clean up methods.

Explanation:

Response Options Calculator (ROC)  is a simulation tool that helps in measuring the performance of the oil mill response system based on the information given to the  system. It contain a database  of oil and its products and thus allows one to add a response system of its own and asses its applicability and feasability. ROC helps in accessing the time period during which the oil spill can be recovered and dispersed before it starts creating nuisance in the water body on getting exposed to the local environmental conditions.

Hence, option C is the correct answer

Final answer:

In the presence of the smell of bitter almonds, indicative of cyanide, do not enter the room. Your first action is to call emergency services and report a potential chemical attack, ensuring your safety and that of others while awaiting trained assistance.

Explanation:

If you approach the scene of a terrorist incident and detect the smell of bitter almonds, this could indicate the presence of cyanide, a lethal poison. The first and most important step is to ensure your own safety by not entering the room; the chemical could still be present in the air, which is dangerous to inhale. After ensuring your own safety, you should immediately call emergency services and alert them to the possibility of a chemical attack. Trained professionals with the right protective equipment will then take over the scene.

It is crucial in such a situation to not act rashly or to put yourself in harm's way, as the potential for extreme physical danger is high. There's often uncertainty over whether a serious fire or hazard awaits after an alarm. The situation you've described bears a resemblance to the fear and chaos that arise in emergencies or violent attacks, like the Boston Marathon bombing, where there was a need for urgent emergency response and a timely or kairos approach to the unfolding events.

You should not attempt to assist the victims until the area has been declared safe by the authorities. Remember that scenes of violence might evoke strong feelings of fear, but taking measured steps and following proper emergency protocols is critical for everyone's safety.

Final answer:

The language development of a 22-month-old child using telegraphic speech, having a vocabulary of about 20 words, and frequently using "me" is typically developing, though slightly below the average range for vocabulary size. This indicates an understanding of self-concept and the beginning of sentence formation. However, language development can vary, and each child's pace should be considered.

Explanation:

The language development of a 22-month-old child using two- or three-word phrases (telegraphic speech), having a vocabulary of about 20 words, and often using the word "me" is within the typical developmental range. At around this age, children are expected to combine words and start forming simple sentences. Telegraphic speech predominantly consists of content words such as nouns and verbs, and lacks function words and inflectional morphemes. Having a vocabulary of 20 words by 22 months may be slightly below the average range, where toddlers typically use between 50 and 200 words, but is nonetheless within the broad scope of normal development. The frequent use of the word "me" suggests that the child is starting to understand self-concept and demonstrate skills in language pragmatics by referring to themselves.

It's important to note that language development can vary significantly among children. While some children may experience a "vocabulary spurt" and rapidly expand their vocabulary at this stage, not all children will exhibit this pattern. The reference to a growing vocabulary and sentence formation indicates the child is likely progressing well, but it's also vital to consider the individual pace of development, which may not always match textbook milestones.

Embryonic stem cells are pluripotent, derived from embryos, and can differentiate into any cell type, which makes them more flexible and versatile than adult stem cells. Besides, adult stem cells are multipotent, originate from mature tissues, and can only differentiate into a limited range of cell types. Ethical concerns are more associated with embryonic stem cells, whereas adult stem cells do not raise such issues.

The main difference between embryonic and adult stem cells pertains to their origin, stage of development, and potential to differentiate into different cell types. Human embryonic stem cells (hESCs) are pluripotent, which means they are capable of differentiating into any cell type in the body and are derived from embryos. On the other hand, adult stem cells, which are found in many organs and differentiated tissues like bone marrow and skin, are multipotent, which implies their differentiation potential is limited to the types of cells found in those specific tissues they originate from.

Moreover, embryonic stem cells have a higher flexibility and growth rate compared to adult stem cells. However, the use of embryonic stem cells in research and therapy often raises ethical issues, since they are obtained from embryos.

In contrast, adult stem cells do not raise such ethical concerns and are less likely to be rejected after transplantation because they can be harvested from the patient themselves. However, they have a limited range of differentiation making them less versatile than embryonic stem cells.

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In order for the scientist to know if the organism makes a protein in the skin and for he or she to be able to analyze it with the use of skin sample in determining its presence, the scientist should look and analyze the cells found in the skin. He or she must be directed at the cell’s mitochondria as where the protein synthesis occurs and to be able to determine if protein is present, the scientist should find the Amino Acids.

Seafloor spreading occurs at divergent boundaries. This process creates new oceanic crust as magma rises from the mantle at these spreading centers, most commonly at mid-ocean ridges. Divergent boundaries are characterized by plates moving apart and forming new crust.

Seafloor spreading occurs at divergent boundaries. This process involves the formation of new oceanic crust by volcanism as magma rises up from the mantle at a divergent plate boundary. You can imagine this as two giant conveyor belts moving apart, creating new crust as they separate.

At these divergent boundaries, plates are moving away from each other, such as along mid-ocean ridges. The new crust formed in this way is typically basaltic, rich in iron and magnesium.