Answer:
Natural selection
Explanation:
I did some research and got that for an answer
Answer:
PLEASE GIVE BRAINLIEST AND HAVE A NICE DAY
The process that drives Darwin's theory of evolution is natural selection
When electrons flow along the electron transport chains of mitochondria
a. the ph of the matrix increases
b. ATP synthase pumps protons by active transport
c. the electrona gain free energy
d. NAD is oxidized
Answer: a. the ph of the matrix increases
Explanation:
NADH and FADH2 molecules resulting from the Krebs cycle (by reducing respectively NAD + and Electron and proton carriers (e- and H +), are oxidized in the final reactions of cellular respiration, and the electrons and protons are captured by oxygen, the final acceptor. The flow of electrons along the respiratory chain causes the active transport of protons along the chain through the inner membrane of the mitochondria. Protons return to the mitochondrial matrix by diffusion - chemiosmosis - and at the same time, ADP undergoes oxidative phosphorylation forming ATP. Because of this movement of protons inside the matrix, the ph of the matrix increases.
In the mitochondrial electron transport chain, ATP synthase uses proton gradient energy for ATP synthesis; electrons' energy decreases; NAD is oxidized; the pH of the matrix does not necessarily increase.
Explanation:The electron transport chain in mitochondria is part of the cellular respiration process during which energy is extracted from molecules such as glucose and transferred to other molecules (such as ATP, the main energy currency of the cell), a process that involves the flow of electrons. Here's what happens:
a. The pH of the matrix does not necessarily increase. The matrix contains a higher concentration of protons when the electron transport chain is active, which would actually decrease pH (meaning it becomes more acidic).b. ATP synthase does not pump protons, but it does utilize the energy from the flow of protons (down their gradient) to synthesize ATP from ADP and Pi (inorganic phosphate). This is known as chemiosmosis.c. Electrons don't gain free energy. The energy of the electrons is actually decreased as they are passed along the electron transport chain, and this energy is used to pump protons into the intermembrane space, creating a proton gradient.d. NAD is indeed oxidized, it loses its electrons to the first complex of the chain, becoming NAD+.Learn more about electron transport chain here:https://brainly.com/question/24368622
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Can mold grow inside of chocolate
Answer:
It is is almost impossible for chocolate to mold as it doesn't have any moisture, required for mold growth.
There are two types of bloom:
Sugar bloom -- wipe the chocolate with a wet finger, it will dissolve.
Fat bloom -- wipe the chococolate with a dry finger, it will feel waxy or greasy
Either tends to look like a chalky coating, not very thick, definitely not fuzzy (like mold).
Yes, mold can grow inside chocolate if it is exposed to warm, humid or damp conditions. It is important to store chocolate properly to avoid mold growth, as some molds produce harmful mycotoxins.
The answer is yes, mold can potentially grow inside chocolate under certain conditions. Molds are microscopic fungi that can grow on various foods, including fruits, vegetables, meats, and dairy products, and they can appear as a gray or green "fur."
In particular, chocolate that has been exposed to warm, humid, or damp conditions may become a breeding ground for mold. Although chocolate is less likely to mold than many other foods because of its low water activity, if moisture is introduced or the storage conditions are poor, mold growth is possible.
This is why maintaining proper storage conditions for chocolate is important to prevent mold contamination.
Some molds that grow on food can produce dangerous mycotoxins, which are harmful if ingested, leading to allergic reactions, respiratory problems and even toxic effects. It's critical to discard any chocolate that shows visible signs of mold to avoid health risks.
Plasma membrane of a skeletal muscle fiber - _________Extension of the sarcolemma that dives into the muscle fiber and surrounds - _________Modified smooth endoplasmic reticulum that wraps around the myofibrils and stores calcium ions - _________Point at which the sarcoplasmic reticulum swells where it meets a T-tubule - _________Rodlike bundle of contractile filaments found in muscle fibers - _________Long, filamentous proteins that constitute myofibrils - _________Myofilament composed of the contractile protein myosin - _________Myofilament composed of contractile protein actin and the regulatory proteins troponin and tropomyosin - ______
Answer:
1. Sarcolemma
2. T-Tubule
3. Sarcoplasmic reticulum
4. Terminal Cisternae
5. Myofibrils
6. Myofilament
7.Thick filament
8. Thin filament
Explanation:
These are all parts of the skeletal muscle and they are all involved in the contraction of your muslces.
The sacrolemma is also known as the myolemma. It is a specialized plasma membrane of the skeletal muscle cell. It is an excitable membrane that shares similarities to the cell membrane of a neuron cell.
The T-tubule extends from the sarcolemma to the sarcoplasmic reticulum (SR). This is the smooth endoplasmic reticulum of the muscle cell. When the sarcolemma gets excited, it triggers the SR to release the calcium ions stored in it. The release of Calcium ions triggers the contraction of myofilaments.
There are two types of myofilaments, the thick myofilament and the thin myofilament. These myofilaments contain contractile proteins, actin and myosin. Thick myofilaments contain myosin where one thick myofilament contains 300 myosin molecules. Thin myofilaments contain contractile and regulatory proteins. These myofilamens make up myofibrils.
An extremely fractious cat has been admitted to the facility. Due to its disposition, you are unable to remove it from its carrier. What opioid normally given by injection can be given orally for sedation or analgesia?
Answer:
The correct answer is buprenorphine.
Explanation:
The efficiency of the pain medication and that for how long the pain will be monitored generally relies upon on how closely the drug will associate with a receptor. The drug buprenorphine exhibits both high avidity and high affinity for the opioid receptors, thus, making it a highly efficient medicine for pain for feline pain relief. The majority of the formulations of the drug only offers six to eight hours of analgesia.
apex learning:
Antibiotics destroy a bacterial infection by disabling ribosomes in the bacteria. Eukaryotic cells contain mitochondria that themselves contain ribosomes while bacterial cells have no organelles and thus have uncontained ribosomes. How do chemists use this fact to create antibiotics that can destroy a bacterial infection without harming human cells?
Answer:
Different antibiotics work differently from each other, some attack bacterial cell wall, some attack proteins, some attack ribosomes and some attack DNA replication machinery.
Antibiotics that attack the ribosomes such as 'tetracycline' actualy inhibit the bacteria to grow by attacking their protein synthesis. Protein synthesis is accomplished in ribosomes, tetracycline cross the bacterial membrane and enter cytoplasm from there i binds on a single specific site on the ribosomes which result in the halting of RNA interaction that stops protein synthesis or extension. In humans, the accumulation of such antibiotics is not to such an extent that it damages the cell machinery.
The "secondary survey" is preformed in the emergency room setting after the primary survey has been completed and all life-threatening conditions have been dealt with. What are the components of the secondary survey?
Answer: It involves inspection, palpation, auscultation, and percussion.
Explanation: The secondary assessment is undertaken after the primary assessment , it is assumed that all the life threatening conditions have been solved during the primary assessment.
The main components that is involved in the secondary assessment is that patients must be explored for any specific conditions.
It includes the components like inspection, auscultation, palpation, and percussion. It should always be documented properly.
This study is replicated in the Appalachian Mountains with similar results. Which of the following is true? The number of days with poor flower availability increased. The number of days with poor flower availability decreased. Flower availability fluctuated wildly. There was no change in the number of days with poor flower availability.
Answer:
There was no change in the number of days with poor flower availability
Explanation:
When replicating a study, the researcher develops the exact same study (experiment/treatment) in different places (experimental unit). In this case, as the researcher replicates the study in the Appalachian Mountains and gets similar results, that means that there was no change in the number of days with poor flower availability.
The impacts of climate change on the timing of flowering in plants can affect their availability to insect pollinators. But without specifics from the related study in the Appalachian Mountains, it's impossible to say whether days with poor flower availability increased, decreased, remained the same or fluctuated.
Explanation:The answer to whether the number of days with poor flower availability increased, decreased, fluctuated, or didn't change based on a study replicated in the Appalachian Mountains isn't provided in your question. However, studies show that temperature and precipitation, which are impacted by climate change, play crucial roles in the geographic distribution and phenology of plants and animals. As seen in Great Britain, climate change can cause plants to flower earlier than in previous years.
This is pertinent because if the insect pollinators don't emerge earlier in sync with the flowers, there could be harmful ecosystem effects as a result of this mismatch of timing. Consequently, there might be days of poor flower availability for these insects. But without specifics pertaining to the study in the Appalachian Mountains, a definitive answer can't be given.
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Most genes come in alternative forms called
Most genes come in alternative forms called alleles. However, a process called alternative RNA splicing can result in one gene producing various protein products, adding another layer of complexity to gene expression and function.
Explanation:Most genes come in alternative forms called alleles. Alleles are gene variants that arise by mutation and exist at the same relative locations on homologous chromosomes. For some genes, there can even be more than two alleles within a population.
However, the complexity doesn't stop there. In the 1970s, scientists discovered a process called alternative RNA splicing, which allows a single gene to produce multiple protein products. During alternative RNA splicing, different combinations of introns (and sometimes exons) are removed from the mRNA transcript. This process can be strictly controlled or haphazard, and it acts as a mechanism of gene regulation, influencing the production of proteins in different cells or at different stages of development. Remarkably, it's estimated that 70% of human genes undergo alternative splicing, further increasing the diversity of possible proteins.
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which kind of disturbance is most likely to precede primary succession?
The epiglottis is pushed downward and the larynx is lifted up to meet it when we swallow. True False
Answer:
The correct answer is true.
Explanation:
Swallowing of food is the process of passing the food from the mouth to the stomach through the way of the throat (pharynx) and esophagus. This process takes place in three stages: oral, pharyngeal, and esophageal stages
During the pharyngeal stage, epiglottis which is a leaf-shaped flap of cartilage located at top of the larynx (a muscular organ forming voice box) perform functions in response to the swallowed food as the larynx lift up or rises inside the neck to close the epiglottis while the epiglottis moves downward to cover it, providing more airway protection.
Thus, true is the correct answer.
Yes, when we swallow the larynx lifts upward and the epiglottis (which is attached to the thyroid cartilage and covers the trachea) swings downward. This prevents food or liquid from entering the trachea and directs it into the esophagus.
Explanation:Yes, it is true that the epiglottis is pushed downward and the larynx is lifted up when we swallow. The epiglottis, attached to the thyroid cartilage, is a very flexible piece of elastic cartilage that covers the glottis, the opening of the trachea. During the act of swallowing, the pharynx and larynx lift upward. This allows the pharynx to expand and the epiglottis of the larynx to swing downward, closing the opening to the trachea and preventing food and beverages from entering. At the same time, the larynx is pulled superiorly and the cartilaginous epiglottis folds inferiorly.
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A student designed an experiment to demonstrate an effect of the interaction between the atmosphere and water. Which of these best describes the experiment designed by the student?
Answer:
I would say B) Blow over water in a bowl to produce ripples.
The student's experiment illustrates various atmospheric interactions with water, such as evaporation, sublimation, transpiration, condensation, gravity's role, convection, and the water cycle, using a combination of visual representations and physical demonstrations.
The experiment designed by the student to demonstrate the interaction between the atmosphere and water involves multiple scenarios depicting processes such as evaporation, sublimation, transpiration, condensation, gravity, convection, and the water cycle. In each scenario, the student uses visual aids to represent the process and provides observations and rationales for the results, for example:
In evaporation, a lamp representing the sun dries up water in a tray, mimicking puddles drying after rain.Sublimation is shown with the sun causing ice to turn directly into water vapor without melting.Transpiration is demonstrated with water collecting on a plastic bag around a lamp-lit plant.Observation of condensation occurs with droplets forming on the outside of a jar with warm water and ice on top.A representation of the force of gravity is shown with a drawing of a waterfall.In the convection scenario, hot water rises and cold water sinks in a container, illustrated with colored ice and warm food coloring.The entire water cycle is demonstrated with a drawing of the sun causing puddles to evaporate, form clouds, and then precipitation.These activities collectively help the student and peers understand the complex interactions of heat energy from the sun, the transitional phases of water, and atmospheric phenomena that are part of the Earth's water cycle.
How does connective tissue differ from the other three major tissue types?
A. Connective tissue often consists of relatively few cells embedded in an extracellular matrix.
B. Connective tissue consists of contractile proteins.
C. Connective tissue consists of cells capable of transmitting electrical impulses.
There are three types of connective tissue. Connective tissue is found lining body surfaces.
Answer:
a
Explanation:
Connective tissue often consists of relatively few cells embedded in an extracellular matrix.
Hile examining a specimen under the microscope, Janet discovers a structure that has some genetic material that has RNA but not DNA. What is the specimen? A. virus B. plant C. fungi D. bacteria E. animal
Answer:
A. Virus
Explanation:
Most viruses are either comprised of RNA or DNA for their genetic material.
In 20 to 25 words each, describe how socialization occurs in each of the following developmental periods:
a. Childhood (birth to age 12):
b. Adolescence (ages 13-17):
c. Transitional Adulthood (ages 18-29):
d. The Middle Years (ages 30-65):
e. The Older Years (ages 65 and above):
Answer:
During their childhood, kids learn about the world that surrounds them when going through 3 different phases regarding their body parts, and taking contact with their family and school; when puberty strikes, the learning shifts towards the teen's peer group and their chosen role models to create new patterns in behaviour and find themselves (adolescence). Once the individual enters adulthood and establish his/her personality, can form strong and intimate relationships with friends and romantic partners (transitional adulthood). When reaching the middle years, the person needs to contribute to society in some way to feel productive, like raising children or helping his/her community. Finally, during the older years, humans tend to reflect on their lives and accomplishments to develop a sense of either integrity or despair.
What is the binomial name of the tiny mammal of the family craseonycteridae
Answer:
It's name is:
Crase-onycteris tho-nglongyai
You should remove the - but else it won't let me post the name...
Answer:
Craseonycteris tho-nglongyai
Explanation:
Within a particular population, darkly colored rats are more likely to survive than more lightly colored individuals. This situation is likely to result in a. directional selection. b. stabilizing selection. c. disruptive selection. d. balancing selection.
Answer:
a. directional selection
Explanation:
Directional selection is a type of natural selection wherein one extreme trait is favored and the individuals with that extreme trait are at survival and reproductive advantage.
In the given example, dark-colored rats are favored by natural selection over the light-colored rats. This occurs because the rats with dark skin color have better survival rats in the prevailing surrounding. Since one extreme trait (dark skin color) is favored over the other (light skin color), the rat population is undergoing directional selection.
Once researchers identified DNA as the molecule responsible for transmitting heritable traits, they asked how information was transferred from the DNA in the nucleus to the site of protein synthesis in the cytoplasm. Which of the following statements correctly describes the mechanism of information transfer in eukaryotes that accomplishes this task?
A) Transfer RNA takes information from DNA directly to a ribosome, where protein synthesis takes place.
B) Histone proteins in the chromosomes transfer information from the nucleus to the ribosome, where protein synthesis takes place.
C) Messenger RNA is transcribed from a single gene and transfers information from the DNA in the nucleus to the cytoplasm, where protein synthesis takes place.
D) DNA from a single gene is replicated and transferred to the cytoplasm, where it serves as a template for protein synthesis
Answer:
C) Messenger RNA is transcribed from a single gene and transfers information from the DNA in the nucleus to the cytoplasm, where protein synthesis takes place.
Explanation:
DNA transfers the heredity information from parents to the offspring, via central dogma. DNA transcripts its information into messenger RNA, inside the nucleus via RNA polymerase and addition of base pairs.
This transcript of RNA carries the information encoded on it. It translates its information into proteins in the cytoplasm, According to the mRNA sequences the amino acid codons are created that form the specific peptides. This is how information is transferred from DNA in the nucleus and then to the cytoplasm.
Which northern marine animal has ivory tusks?
Answer:
A walrus
Explanation:
Someone who is HIV positive and takes his/her arvs in time which led him to test when results shows negative. Can he transmit the virus to a partner who is negative?
Answer:
I believe the answer is No.
Explanation:
HIV is a virus which lacks the mechanism to reproduce since it is just an enclosed bunch of genetic material. With that in mind, it requires a mechanism to survive and reproduce and for that it targets the T-lymphocytes since the cells have receptors for the virus. It starts its cycle by attachment, penetration, biosynthesis, maturation and lastly budding. It adds it's genetic material to the DNA chains in the nucleus which the human cells replicate unknowingly. Most of the anti-retrovirals target to prevent this replication through targeting enzymes such as protease inhibitors. Taking of the drugs only reduces the replication of the virus lowering the viral count to less than 200 where we cannot count them anymore because they are widely distributed. Having a viral count <200 does not mean you are free of the virus but only that it is very low to be counted or cause significant health problems but the small number can still be transmitted if protection is not used.
The male trees of a plant with vascular tissue and cones have multiflagellated sperm. The female trees produce rotten-smelling fleshy seeds that contain butyric acid. Which of the following is the most logical conclusion about the classification of this plant?
a. It belongs to the phylum Coniferophyta.
b. It belongs to the phylum Cycadophyta.
c. It belongs to the phylum Gingkophyta.
d. It belongs to the phylum Gnetophyta.
Answer: C. Phylum Gingkophyta.
Answer:
c. It belongs to the phylum Gingkophyta.
Explanation:
The tree in question is Ginkgo biloba, a tree belongs to the phylum Gingkophyta. It is a conifer. This species is the last species of this phylum, so often Ginkgo is called as ‘living fossil’. The male plant bears the male cone which produces multiflagellated sperms. Since it is a memebr of gymnospserm, it has well developed vascular tissue. The female trees produce fruits. The fruits emit very bad smell when left on the ground to rot. The rotting fruit releases butyric acid from the fleshy fruit wall sarcotesta.
Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers; all F1 individuals have red, axial flowers. The genes for flower color and location assort independently. If 1,000 F2 offspring resulted from the cross, approximately how many of them would you expect to have red, terminal flowers?
a. 250
b. 750
c. 190
d. 65
e. 565
Answer:
565 is right answer of this quation
Ava has arrived at the clinic for her well-child visit. She is 4 months old. Ava’s immunization record reveals that she has received the following vaccines: 2 doses of HepB 1 dose of Hib 1 dose of rotavirus 1 dose of PCV13 1 dose of DTaP 1 dose of IPV Which vaccines should Ava receive at today’s visit
Answer:
At 4 months old, the baby should receive the vaccines in order to get protected against the diseases like Diphtheria, tetanus and whooping cough, polio, Haemophilus influenzae type b, rotavirus, and pneumococcal infections. Thus, the child in the mentioned case will receive the second dose of DTaP, Hib, IPV, PCV13 and rotavirus vaccine.
The results of this experiment show that plants grow more in soil containing worms than in soil without worms. Which factors below helped the plants grow taller? Check all that apply.
A. Worms help move nutrients toward the roots of plants.
B. Worms produce nutrients, such as nitrogen, that are essential for plants to grow.
C. Worms create tunnels that allow the soil to absorb more water.
Answer:
All of them
Explanation:
The factors that helped the plants to grow taller are as follows:
Worms help move nutrients toward the roots of plants.Worms produce nutrients, such as nitrogen, that are essential for plants to grow.Worms create tunnels that allow the soil to absorb more water.How do worms supply nutrients to the plants?The body of worms decompose rapidly and are transformed into decomposers which convert the organic form of nutrients into an inorganic form that is easily assimilated by the plant's roots.
After transforming into decomposers, worms assist plants by the production and movement of the nutrients toward the plant's roots.
They also produce some tunnel-like structure that induces the soil to absorb and hold more water.
Therefore, it is well described above.
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hich phylum is characterized by animals that have a segmented body?
A) Cnidaria
B) Platyhelminthes
C) Silicea
D) Arthropoda
E) Mollusca
Answer:
D) Arthropoda
Explanation:
Arthropods are from the invertebrate family. It is a very diverse group and there are few characteristics that are common to all. One of them is that they all have segmented bodies.
Classification of arthopods:
1. Chelicerata: this group is characterized by having two appendages (chelicers) at the sides of the mouth to eat. Spiders and scorpions are an example of this group.
2. Miriapoda: they are terrestrial and have the particularity of having many legs. Among them are the Centipedes and Millipedes.
3. Crustacea: they are generally aquatic and have branched limbs. The crabs and lobsters are in this group.
4. Hexapoda: those in this group have 6 legs. This includes insects such as flies and beetles.
Which event takes place during anaphase II of meiosis II?
a. Sister chromatids separate.
b. Cytoplasm divides.
c. Spindle fibers disassemble.
d. Nuclear membrane breaks down.
Answer:
Sister chromatids separate.
Explanation:
Anaphase II is the stage of meiosis II where sister chromatids separate. This process is followed by cytoplasm division and the disassembly of spindle fibers.
Explanation:Anaphase II is a stage of meiosis II where sister chromatids separate. This occurs after the nuclear membrane has broken down and the spindle fibers attach to the centromeres of the chromatids. During anaphase II, the chromatids are pulled apart and move towards opposite poles of the cell.
After anaphase II, cytoplasm divides during cytokinesis, resulting in the formation of two daughter cells. The spindle fibers also disassemble during telophase II, marking the end of meiosis II.
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Both a man and a woman are heterozygous for freckles. Freckles ( F) are dominant over no freckles ( f). What is the chance that their child will have freckles?
Answer:
75% chance or 3/4
Explanation:
If both parents are heterozygous and freckles is a dominant trait (F) then we can denote having no freckles as (f)
Using a punnett square, this will produce the following genotypes of the children:
FF, Ff, Ff and ff.
Therefore, there's a 3 out 4 chance or 75% of the children also inheriting freckles.
If a DNA-binding protein reads a short stretch of DNA and detects the following second genetic code provided by the functional groups located on each base as H-HD-CH3-HA-HA-HA-HA-HD, then what is the corresponding sequence of bases?
CGGA
CAGA
CTGA
CTAG
Answer:
If I am being Honest I am not entirely sure but below I added a link that should explain everything. I hope this helps.
Explanation:
https://courses.lumenlearning.com/wmopen-biology1/chapter/dna-base-pairs-and-replication/
What method(s) do plants use to obtain nitrogen? Select all that apply.
absorb it from the atmosphere
use bacteria to convert nitrogen to usable form
In obtain usable nitrogen compounds from the soil
absorb nitrogen from water taken in at the roots
Answer:
Plants can't use N2 as is so the first option is wrong. They do have relationships with bacteria that live in nodules of the root and convert the nitrogen into ammonia, a usable form for the plants. So the second option is correct. There are bacteria living in the soil as well that convert nitrogen to ammonia so technically option 3 is also correct. Again, nitrogen if present in water would be in the form N2 which is not usable by plants so 4 is wrong.
These are correct:
use bacteria to convert nitrogen to usable form
In obtain usable nitrogen compounds from the soil
Plants acquire nitrogen through natural processes. Nitrogen is introduced into the soil by fertilizers and animal and plant debris. Bacteria in the soil convert nitrogen into ammonium and nitrates. These are taken up by plants in the process of nitrogen fixation. Plants use this method to obtain nitrogen.
These are correct:
Bacteria convert nitrogen into a usable form
Extract available nitrogen compounds from soil
How do plants get nitrogen?Plants cannot get nitrogen from the air but rely primarily on the supply of fixed nitrogen in the form of ammonia or nitrates. This results from nitrogen fixation by free-living bacteria in the soil or symbiotic bacteria in the tubers in the soil. The roots of legumes arise from the soil.
How do plants absorb nitrogen from the atmosphere?Plants get the required nitrogen from soil that is already fixed by bacteria and archaea. Bacteria and paleobacteria in the roots of soil and some plants have the ability to convert atmospheric molecular nitrogen (N2) to ammonia (NH3), thereby breaking the strong molecular nitrogen triple bonds.
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WILL MARK AS BRAINLIEST!!!!
Which of the following describes a phenomenon that occurs when we observe plants that wilt?
A. The xylem releases all its water.
B. The stomata close, cutting off transpiration and gas exchange.
C. The roots begin to rot, causing them to no longer uptake water.
D. The plant begins absorbing oxygen and releasing carbon dioxide into the atmosphere.
Answer:
The stomata close, cutting off transpiration and gas exchange. - B
Answer:A
Explanation:
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Which customers are typical for the Agriculture, Food, and Natural Resources career cluster? Select ALL that apply.
a power company needing solar panels
a local fresh market
a business working with trained animals
a person buying large quanities of wheat
a person learning about geography
a family on a camping trip
Answers:
a local fresh market ( second choice)
a business working with trained animals ( third choice)
a person buying large quanities of wheat ( fourth choice)