Question 12.4 c
Homework Unanswered
EXPLORE FOOD PRODUCTION SYSTEMS, PROCESSING, PACKAGING AND TRANSPORTATION IN
YOUR DIET
How far does your food travel before it gets to your plate? Discuss the implications of
transportation of your food for the planet. Use one specific example to illustrate your points.
Here is a resource published by the Institute on the Environment at the University of Minnesota
to help you in your analysis.
It’s about biology
Answer: about 1,500 miles
Explanation: i had this on plato
Which of the following statements best explains
why the lower mantle of Earth is much more
rigid and dense than the upper mantle?
A. The lower mantle is older than the upper
mantle.
B.
The lower mantle is cooler than the upper
mantle.
C.
The lower mantle is under more pressure
than the upper mantle.
D. The lower mantle is farther from the core
than the upper mantle.
The following statements best explains why the lower mantle of Earth is much more rigid and dense than the upper mantle is because the lower mantle is older than the upper mantle and is denoted as option A.
What is Mantle?This is the region which is found in the interior of the earth and it is bounded below by a core and above by a crust. It consists of bulk of solid substances and the density varies.
The lower mantle has a higher density as a result of it being older and more substances accumulating to make it more rigid therefor masking option A the correct choice.
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The human stomach is an organ that helps us digest food. The stomach is one of many organs involved in the process of digestion. Others include the esophagus, small intestine, pancreas, and gall bladder. What name is given to a set of organs that work together to perform a specific function?
A. System
B. Phylum
C. Centriole
D. Tissue
3. Which best describes the structure of a phospholipid?
a nonpolar molecule attached to
a fatty acid a lipid molecule with a polar head and a tail
a phosphate molecule joined to a fatty acid
a glycerol molecule between two fatty acid chains
please help asap and give a good answer
Answer:
a glycerol molecule between two fatty acid chains
Explanation:
hope it helped
How does competition drive
natural selection?
A. Competition causes more death of organisms
which leaves room for other species to move in.
B. It causes new niches to become open.
C. This causes the individuals best suited for
competition to survive while the other die off.
D. The use of different resources causes new
developments of organisms.
The competition drive natural selection this causes the individuals best suited for competition to survive while the other die off. Thus, option C is correct.
What is natural variation?
Genetic variation allows for differences between individuals due to differences in the inherited DNA. Genetic variation has been defined as difference in the DNA within individuals or populations.
Genetic variation has the presence of the variation in the gene sequences between the individual organisms of a species. Skin color, hair color, bloody type, dimples all are the examples of genetic variations that seems in a human population.
Therefore, The competition drive natural selection this causes the individuals best suited for competition to survive while the other die off. Thus, option C is correct.
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Describe the process of pollination.
which option describes a step in designing experimental procedures?
Writing a hypothesis that must be true can describe a step in designing experimental procedures.
What does a research hypothesis entail?A hypothesis outlines your expectations for the results of your investigation. It is a speculative, untested response to your research question. You might need to develop a number of hypotheses for some research projects that speak to various facets of your research issue.
Simple hypothesis, complicated theory, direction-based theory are types of a hypothesis.
What role does a hypothesis play in research?As previously said, a hypothesis serves as a response to the research question and directs the gathering and analysis of data. Researchers can use hypotheses to both identify relationships between variables and forecast relationships based on theoretical principles and/or empirical data.
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Two students were able to identify an organism to differing levels of classification. Student "A" was able to identify the organism to the level of "class." Student "B" was able to identify the organism to the level of "order". Which student has been able to classify the organism more accurately? Explain.
Student B was able to identify the organism to the level of order.
Contemporary-day scientists base their classifications specially on molecular similarities. They group collectively organisms that have comparable proteins and DNA. Molecular similarities show that organisms are related. In other words, they're descendants of a common ancestor in the beyond.
Aristotle come to be the primary scientist who attempted to categorise organisms. He subdivided flowers into 3 agencies: shrubs, herbs and wooden. He subdivided animals into their habitat: air, water and land.
inside the 18th century, Carl Linnaeus posted a machine for classifying dwelling subjects, which has been superior into the modern-day category system.
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Which is not a cause of water
pollution?
A. combustion from engines of cars
B. oil spills from boats in the ocean
C. chemicals from industrial waste
D. pesticides used in agriculture
Write an essay about your chosen job and the field of science it belongs to. Describe what that field of biology studies and how the job fits into that field. You should include information about a typical day in that job and the responsibilities and tasks of people in this profession. Be sure to include any important facts about how the job makes an impact in science and describe some of the significant discoveries that have been made in its field.
Working in molecular research would enable you to understudy the make up of materials.
Who is a molecular researcher?A molecular researcher, is one who is interested in being able to study the molecular composition of matter. This is one of the most fundamental areas of science as the scientists that work in this area are always trying to find out the molecules that compose matter. Recall that matter is anything that has mass and occupy space.
The area of molecular research is largely domiciled in the filed of biochemistry. Most of these molecules that are studied are of biological origin and can be found in the cell. During the pandemic, the molecular laboratories all over the word worked very hard to understand the nature of the corona virus.
Thus the field of molecular biology helps in the study of the DNA of living organisms as well us the understanding of the activities of enzymes. The greatest breakthrough of molecular research is the human genome project.
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What resources cause the carrying capacity of the largemouth bass population to decline? Explain your answer with specific examples. Use the Food Web and Invasives ecosystem for this question.
All kinds of research shows that angler harvest, flood events, and drought can cause smallmouth to decline, with the drought thus causing the most harm.
What impact do humans have on the food chains in the habitats where they live?With their hunting, fishing, and introduction of predators to new areas, humans play significant roles in trophic cascades. Increased grazing pressure brought on by human activity affects the plant community and modifies biogeochemical cycle.
What are the four human behaviors that disrupt the food chain?The majority of consumers are people. Energy production, agriculture, pollution, habitat degradation, overfishing, and hunting all have an impact on food webs.
How is the other population in the food chain affected by the shift in one population?In a predator-prey cycle, an ecosystem’s predator and prey populations fluctuate over time. Shortly after the number of preys rises, the number of predators follows suit.
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Select the correct answer.
What will happen to the ecological efficiency of an ecosystem, if the number of organisms in any trophic level is different from the ideal number?
OA. It will remain the same, as there cannot be any imbalance in the ecosystem.
OB.
It will remain the same, as the ecological efficiency never changes.
It will differ due to an imbalance in the number of producers and consumers.
O C.
Answer:i would say that it is c It will differ due to an imbalance in the number of producers and consumers.
True or False: Earth contains many different cycles thatinteract with each other and they move through Earth'sdifferent spheres.
Earth's ecosystem can be divided into 4 spheres, which are the atmosphere, the biosphere, the hydrosphere, and the geosphere. These spheres interact with each other and a change in one of them may cause a change in the other three spheres.
Within the ecosystem, the substances, such as water, carbon, oxygen, and nitrogen, undergo biochemical cycles. Through this cycle, the substances revolve through all spheres and are distributed throughout the whole ecosystem.
The statement is therefore TRUE.
Which best explains the process of meiosis? PLEASE ANSWER!!!!
Answer:
Meiosis is a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes
Explanation:
transcribe 3’ TACCGTTAGGATATC 5’
Based on the sequence, the given sequence is the non-transcribed strand of DNA. I wrote a sequence of double-stranded DNA. The top strand indicates the transcription start site ATG. In messenger RNA, T or thymidine is replaced by U or uracil.
You can look up the codon table to give all possible amino acids where ATG, which encodes methionine, can be the first amino acid.
5'-A T G G G A A AT C A T C G G T G A-3'
3’-T A C C C T T T A G T A G C C A C T-5’
All mRNAs are read in the 5'-3' direction and polypeptide chains are synthesized from the amino terminus to the carboxy terminus. Each amino acid is specified by its three base codons in the mRNA, according to the nearly universal genetic code. The main enzyme involved in transcription is RNA polymerase, which uses a single-stranded DNA template to synthesize a complementary strand of RNA.
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What are the 4 nitrogenous bases that are represented by A, T, C, and G?
27. In one part the ________ cycle, organic matter is buried underground andconverted to peat, coal, oil, or gas deposits.A. carbonB. nitrogenC. phosphorous
During the carbon cycle, organic matter can be used in multiple ways by different organisms, although, this chemical compound also can be buried underground and converted into peat, coal, oil, or gas deposits. This is possible due to organisms can store this material in their structures to grow, and eventually, when they decay, for example, when a tree or an animal dies, it begins to form part of the soil in which they were before. This is the reason why currently we can extract oil from underground sinks, because of those biggest organisms that lived millions of years ago, such as the dinosaurs and ancient plants.
Having this clear, we can say that the correct answer is the first one.
We can see the carbon cycle in this licensed image.
a home made protocol for animal tissue DNA extraction?
DNA (deoxyribonucleic acid) is the hereditary material in almost all living organisms. Most DNA is located in the nucleus.
For extraction of DNA we need 500 ml water,91% Isopropyl Alcohol (rubbing alcohol),Dishwashing liquid, Salt, Food coloring (dark colors recommended),3 clear plastic cups
Steps include Pour 500ml water in a plastic cup
2. Add one tablespoon of salt to the water
3.dissolved the salt completely
Transfer 2 tablespoons of salt water in a clear plastic cup
2. Vigorously trill the salt water
3. Spit salt water back into the same cup
When you trill the salt water, cheek cells will come out. Add 1ml of clear dishwashing soap to the salt .It will break open the cheek cells and their nuclei walls and this causes the DNA to be released into the salt water.
1. Pour 100 ml isopropyl alcohol plastic cup.
2. Add 3 drops of food coloring, and isopropyl alcohol in a separate clear plastic cup.
2. Add 3 drops of food coloring, mix them well
DNA is insoluble in isopropyl alcohol so it will promotes the clustering of the DNA, making them visible.
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White blood cells, called leukocytes, are very different in structure and function than red blood cells. White blood cells help fight infections, parasites, and bacteria. They do this by engulfing pathogens and synthesizing antibodies which are made from proteins. In addition white blood, cells can reproduce unlike red blood cells.
Many white blood cells can't divide and they have the ability to reproduce on their own.
How do white blood cells reproduce?White blood cells are not similar to other types of cells that are present in our body. They act like single-cell organisms which can move on their own and can feed on other cells and bacteria. Many types of white blood cells can't reproduce on their own so they are produced in the bone marrow. In a person that has normal bone marrow, the number of white blood cells can double within hours. It is a type of blood cell that is produced in the bone marrow and found in the blood lymph tissue. White blood cells are part of the immune system of our body. White Blood Cell protects Red Blood Cell, as it tries to protect the red blood cells from pathogens.
So we can conclude that the cells which can move freely and feed on pathogens and bacteria that can harm our body are known as white blood cells.
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consider the table depicting the four major biomolecules of life. Then review the food web flow chart. One element is critical to building proteins as well as nucleic acids. What element is that? How does it get into the mix of biomolecule elements?
Considering a food web flow chart, one element critical to building proteins as well as nucleic acids is nitrogen.
It gets into the mix of biomolecule elements by means of the nitrogen cycle.
What are biomolecules?Biomolecules are large organic molecules found in living organisms. These biomolecules are essential for the fi=unctioning of living organisms.
There are four major biomolecules that are essential for life, they are:
proteins: proteins are the structural molecules of life. Proteins are composed of monomer units known as amino acids that are linked together by peptide bonds.lipids : lipids include the fats and oils which serve as energy stores as well as structural moleculesCarbohydrates : carbohydrates provide energy and also serve structural functions.Nucleic acids : nucleic acids are the DNA and RNA and they store genetic information.One element critical in the formation of both proteins and nucleic acids is nitrogen. Nitrogen is present in all amino acids as the amino groups as well as in the side chain of some amino acids.
Nitrogen is also an important element in the structure of the nitrogenous bases of nucleic acids.
By means of the nitrogen cycle, nitrogen is incorporated into biomolecules.
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The Loch Raven Reservoir supports a variety of organisms at all times of the year. There is an algal bloom this year. How would the environment be expected to change?
It is expected that the algal bloom in the Loch Raven Reservoir would change by decreasing the amount of available biomass.
What is the direct consequence of an algal bloom?The direct consequence of an algal bloom is an increase in the amount of available oxygen in the aquatic system and a drastic reduction in the light that enters into this ecosystem, which reduces the amount of biomass because plants are unable to produce photosynthesis.
Therefore, we can conclude that the consequence of an algal bloom is a decrease in the biomass that supports the trophic chain in this aquatic ecosystem.
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what is free nittrogen?
Symbiotic relationships occur
between what types of
organisms?
A. Animals of the same species
B. Living and non-living things
C. Any two species that are living close together
How would you ensure you have valid data? PLS HELP IT’S DUE TOMORROW, 6th science
Make certain that your technique and measurement approach are high first-class and focused to measure exactly what you need to know.
Validity must be taken into consideration inside the very earliest levels of your research, while you decide how you'll gather your facts. Ensure that your method and dimension method are high great and targeted to degree exactly what you want to recognize. They ought to be thoroughly researched and based on present knowledge.
Legitimate information refers to statistics this is effectively formatted and stored. Dependable information, however, refers to statistics that may be a depended on foundation for evaluation and selection-making. legitimate facts is an important component of dependable information, but validity by myself does now not assure reliability.
The data ought to be the right type. As an example, users ought to enter quite a number in a total buy devices discipline. The information have to be constrained to viable values. as an instance, customers can most effective pick out a valid mortgage type by means of selecting the type from a list of options.
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someone answer this one for me please
Answer:
C- A chemical reaction releases thermal energy.
How do the islands to the northwest look different indicating they might be
older?
Where are new volcanoes forming in the chain (northwest or southeast)?
Which direction is the plate moving (northwest or southeast)? WILL MARK YOU THE BRAINLEST please answer!!
Answer:
would this help The six largest Hawaiian Islands—the Big Island, Maui, Lanai, Molokai, Oahu, and Kauai—form a chain of islands running to the northwest? The islands appear in this pattern for a specific reason: They were formed one after the other as a tectonic plate, the Pacific Plate, slid over a plume of magma—molten rock—puncturing Earth’s crust. These magma plumes aren’t small—they can extend hundreds of kilometers below the Earth’s surface.
The cells that make up skeletal muscular tissue are somewhat unique for having:
O cell walls instead of cell membranes.
O especially porous cell membranes.
O no mitochondria.
O cells with multiple nuclei.
The cells that make up skeletal muscular tissue are somewhat unique for having cell walls instead of cell membranes and is denoted as option A.
What is Cell wall?This is mostly found in the outer region of the cell membrane and is a rigid, semi-permeable protective layer which consists of lipids, cellulose and polysaccharides needed for its functions.
The cell wall is mostly found in plants but at the same time they are present in some cells of the body such as that of the skeletal muscular tissue due to the rigorous activities being performed by them.
This helps to maintain the structural integrity of the cells and ensures that movement is easily done which is the reason why they are present instead of cell membranes hence option A is correct.
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Investigating Energy Systems
Harnessing Human Energy Chapter 1 Lesson 1.2
Reasoning Tool
Possible subclaims:
The Battery System does have energy.
or
The Battery System does not have energy.
The Hand-Crank Generator System does have energy.
or
The Hand-Crank Generator System does not have energy.
The Solar Cell System does have energy.
or
The Solar Cell System does not have energy.
Evidence
(observations about whether the system does or does not have energy)
This matters because . . .
(How does this evidence support the subclaim?)
Therefore, . . .
(subclaim)
In regards to Investigating Energy Systems, the Possible subclaim is Option C: The Solar Cell System does have energy.
The Evidence: The PV cells on a solar panel capture the energy from the sun's rays as it shines on the panel. This matters because produces electrical charges that are propelled by a moving internal electrical field in the cell, which results in the flow of electricity.
Therefore, Solar Cell System is one that possess some amount of energy.
What energy is a solar cell?Any device that directly converts the energy of light into electrical energy through the photovoltaic effect is referred to as a solar cell, sometimes known as a photovoltaic cell.
Photovoltaics (PV), commonly referred to as solar electricity panels, absorb solar energy and turn it into usable electricity for your home.
Therefore, Since Nuclear fusion occurs in the sun and produces solar energy. A PP (proton-proton) chain reaction is what causes this process to produce such a large amount of energy.
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Perform the following operation.
10^4x 10^8
A. 10-4
B. 1032
C. 10^(1/2)
D. 10¹2
The answer is [tex]10^{12}[/tex].
How to perform the operation?Given,
10^4x 10^8
Solution:
10^4x 10^8 = [tex]10^{4+8}[/tex]
= [tex]10^{12}[/tex]
(Since the base value is the same, the powers are added).
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why are head or spinal injuries considered fatal
Answer:
The most extreme spinal twine injury influences the structures that alter bowel or bladder control, breathing, coronary heart fee and blood pressure. Most human beings with spinal twine injury journey continual pain.