​An oceanographer discovered new seafloor being formed in the ocean at a divergent fault. The scientist classifies this as a trench. Is the scientist correct or incorrect and why or why not? (3 points)

 A. He is incorrect. Trenches are narrow openings occurring at subduction zones.

 B. He is incorrect. Trenches are flat areas at the foot of continental shelves.

 C. He is correct. Trenches are ancient volcanoes whose tops have eroded away.

 D. He is correct. Trenches are areas between continental shelves and deeper ocean floors.

​

As you descend stairs leading with your right foot, the left ankle undergoes eccentric contraction of the plantar flexor muscles. The Correct option is B

This is because the plantar flexors, including the gastrocnemius and soleus muscles, are responsible for controlling the movement of the ankle during dorsiflexion. As you step down, the left foot is positioned on a lower step, causing the ankle joint to dorsiflex and the plantar flexors to lengthe.

In order to control this movement and prevent the foot from dropping too quickly, the plantar flexors undergo eccentric contraction to provide a controlled lowering of the foot. There is no concentric contraction of the left ankle dorsiflexor during this movement as it is being stretched and not contracting.

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As you descend stairs leading with your right foot, the left ankle is undergoing an eccentric contraction of the left ankle plantar flexors.

This means that the muscles responsible for pointing the foot downward (plantar flexion) are actively contracting while lengthening, in order to control the descent of the body down the stairs.

This is necessary to prevent the body from falling forward as the weight shifts over the descending leg.

At the same time, the left ankle dorsiflexors are undergoing a concentric contraction. These muscles are responsible for lifting the foot upwards (dorsiflexion), and are contracting to prepare the foot for the next step down.

Together, these coordinated contractions of the ankle muscles allow for safe and stable stair descent, even when leading with the opposite foot. The correct option is B.

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Answer:

The non-photosynthetic parts of the plant include any parts that lack chlorophyll, such as the roots, woody stems, fruits, and seeds. These parts of the plant do not contain chlorophyll, and thus are unable to capture light energy from the Sun. They rely on photosynthetic parts of the plant, such as the leaves and parts of the stem to do photosynthesis. In vascular plants, the nutrients produced during photosynthesis are transported to non-photosynthetic parts of the plant through the phloem. Phloem is a vascular tissue designed to transport glucose and other nutrients produced during photosynthesis to parts of the plant that are non-photosynthetic, such as the roots.

Explanation:

brainliest plzzz

A bundle of parallel neurons encased in fibrous connective tissue is called a(n) nerve (in the PNS).

The central and peripheral nervous systems are the two primary divisions of the nervous system. The brain and spinal cord make up the central nervous system, while the peripheral nervous system is made up of the nerves that connect to the rest of the body. A nerve is a bundle of parallel neurons encased in fibrous connective tissue. The peripheral nervous system, which consists of the nerves and ganglia outside of the brain and spinal cord, is made up of two components: the somatic nervous system and the autonomic nervous system. The somatic nervous system regulates voluntary muscle control, while the autonomic nervous system regulates involuntary processes such as heart rate and digestion.

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In the Peripheral Nervous System (PNS), a bundle of parallel neurons encased in connective tissue is called a nerve. This consists of several axons bundled into fascicles, all of which are ensheathed in fibrous connective tissue layers. Similar structures are referred to as tracts in the Central Nervous System (CNS).

A bundle of parallel neurons encased in fibrous connective tissue in the Peripheral Nervous System (PNS) is referred to as a nerve. Nerves consist of several fibers or axons that are tightly packed inside connective tissue sheaths. The outer layer, called the epineurium, encloses the entire nerve. Within, the axons are bundled into groups called fascicles, each surrounded by a layer called the perineurium. Individually, each axon is ensheathed by the endoneurium. Nerves can be connected to the brain (cranial nerves) or the spinal cord (spinal nerves). In the Central Nervous System (CNS), a similar structure is called a tract.

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Explanation:

(a) After vis friends comforted him he went back to school.

(b) No. HIV can only be caught by another person of they come in contact with your blood or through sexual intercourse. So it is not possible for others to become infected if they didn't come in contact with the person's blood or have unprotected intercourse. There is no reason for a HIV+ve person to isolate themself from the outside world. They are people just as we are but they only have something that can cause them to be really sick.

Glycolisis uses Glucose and produces Pyruvate. The krebs cycle uses Acetyl CoA and produces Oxalacetate, NADH, FADH₂. The electron transporter chain uses Oxygen, NADH, FADH₂ and produces ATP and water. ATP synthase uses the proton gradient and produces ATP.

Through respiration, cells can degrade organic compounds and produce energy.

Aerobic respiration takes place in three steps or stages: Glycolysis, Krebs cycle and electron transporter chain.  

Pyruvate, the main product of glycolisis, enters the mitochondria matrix and turns into Acetyl CoA. Once in the matrix, it enters the Krebs cycle

NADH and FADH₂ move to the mitochondrial membrane where it is used in the electron chain.

The proton gradient created along the elctron transporter chain is used to produce ATP molecules by ATP synthase.

Process            What does it use?            What does it make?

Glycolisis        ⇒         Glucose           ⇒              Pyruvate

Krebs Cycle    ⇒        Acetyl CoA       ⇒    Oxalacetate, NADH, FADH₂

Electron chain  ⇒ NADH, FADH₂, O₂  ⇒    ATP + H₂O

ATP synthase   ⇒   Proton gradient     ⇒         ATP

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Answer:

Explanation:

mmmm

Fruit is an example of a renewable resource. The statement is true.

Fruits are derived from plants that can be cultivated, grown, and harvested repeatedly.

As long as the plants are properly maintained and their fruits are harvested sustainably, they can continue to produce new fruit crops in subsequent growing seasons.

This makes fruit a renewable resource compared to finite resources that cannot be replenished once depleted.

Renewable resources are those that can be replenished or regenerated naturally within a reasonable time frame.

In the case of fruit, it comes from plants, such as trees or vines, that have the ability to bear fruit multiple times during their lifespan.

Thus, the given statement is true.

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In a plant, the embryo and its food supply, surrounded by a protective coat, constitute a seed. A seed is a crucial structure that allows plants to reproduce and spread across different environments.

A seed is the product of sexual reproduction in plants, where the male gamete (pollen) fertilizes the female gamete (ovule) within the flower.

The embryo is the young, undeveloped plant contained within the seed. It consists of a radicle (embryonic root), hypocotyl (embryonic stem), and one or two cotyledons (embryonic leaves). The embryo carries the genetic information necessary for the plant's development and growth.

The food supply, also known as endosperm or cotyledons, provides essential nutrients for the developing embryo. In monocotyledonous plants (such as grasses), the endosperm remains within the seed and serves as the primary source of nourishment. In dicotyledonous plants (such as beans), the cotyledons store nutrients like starch and proteins to support the initial growth of the seedling.

The protective coat, also called the seed coat, surrounds and safeguards the embryo and its food supply from external threats such as desiccation, mechanical damage, and pathogens. It acts as a barrier that prevents water loss and shields the vital components of the seed.

Together, the embryo, food supply, and protective coat make up a seed, which possesses remarkable adaptations for survival and dispersal. When the conditions are favorable, the seed germinates, initiating the growth of a new plant. This ingenious reproductive strategy allows plants to colonize new areas, endure unfavorable conditions, and ensure the continuation of their species.

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Answer:

There are differences in climate around the world because of differing amounts of radiation received from the Sun at different parts of the Earth at different times of the year.

Explanation:

Hope this helps :)

Answer:

because according to where they are located, atmosphere brings different weather and temperature, and some places are further away from the sun, just like when it is day in one side but night on the other

Explanation:

The primary structural constituent of plant tissues is cellulose; option D

Cellulose is polysaccharide which is composed on monomers of glucose molecules. It is an unbranched polymer of glucose residues linked together by beta-1,4 linkages.

Cellulose is an important structural component in plants.

It forms the cell walls of stems, leaves, and roots, giving the plant structure and shape.

In conclusion, cellulose is polysaccharide composed of glucose monomers in beta 1-4 linkages. It is an important structural molecule in plants.

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True, more primate species probably existed in the past than are alive today. There is evidence that more primate species existed in the past than are alive today.

This is due to factors such as evolution, natural selection, and extinction events, which have caused some primate species to evolve into new species, adapt to different environments, or become extinct over time.

As a result, the total number of primate species in the past was likely higher than the number of species currently alive.

Fossil records and genetic studies have shown that primate diversity has decreased over time, with some species becoming extinct due to climate change, habitat destruction, or competition with other species.

Additionally, new primate species continue to be discovered, further supporting the idea that primate diversity was greater in the past.

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The correct answer to the statement " air entering a low pressure region will fall and cool " is absolutely false.

A pressure region simply refers to that area of a body or system in which pressure is directly excerted in that area. In science, it is ratio of force per unit area.

From the context of the task given above, the air entering a low pressure region will fall and cool is not true simply because of the reduced pressure. The S.I unit of pressure is Newton ( N )

In conclusion, it can therefore be deduced from the explanation given above that pressure is derived quantity.

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The pelvic girdle comprises two coxal bones. The ilium, ischium, and pubis combine to produce each coxal bone. At the point where these bones fuse, the thigh-bone articulates with a region called the acetabulum.

The two coxal bones (also known as the pelvic or innominate or hip bones) make up the pelvic girdle. These connect to one other in front of the pubic symphysis and to the sacrum in back at the sacroiliac joint.

The left and right coxal bones are together b to as the pelvic girdle. These are commonly referred to as "hip bones."

The pelvis is the bowl-shaped structure formed by the two coxal bones, linked in the anterior by the sacrum and coccyx. The pelvic girdle is made up only of the two coxal bones.

Therefore, The pelvic girdle consists of two coxal bone.

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Nucleic acid

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Answer:

Abuse

Explanation:

I don't know for sure, but it seems like the best option.

Answer/Explanation:

D

Trees improve water quality by slowing rain as it falls to the Earth, and helping it soak into the soil. ... Having a buffer of forestland by streams and riverbanks does more than just filtering the water.

Answer:

b. Water is filtered as it passes through the root systems of trees.

Explanation:

on edge

Answer:

A diving regulator is a pressure regulator that reduces the pressure of gas in the tank and deliver it to the diver so that he/she can breathe easily. It must pass the controlled laboratory testing and must have a second adjustment knob to ensure ease of breathing. Modern regulators are precision made and designed to work under demanding conditions. 1st stage and 2nd stage, diaphragm and piston, exhaust valve and purge button are types of diving regulators.

A scuba regulator is a pressure regulator that lowers the gas pressure in the cylinder and supplies it to the diver, making it easier for the diver to breathe. A second adjustment knob is needed to pass controlled laboratory tests and facilitate breathing. Modern regulators are precisely designed and designed for use in harsh conditions. The first and second stages, diaphragm and piston, exhaust valve, and flush button are a type of regulators.

The regulator is an excellent invention that provides exactly the air needed for breathing from the scuba tank. The regulator is the focus of the scuba gear and connects the scuba tank to BC, scuba pressure gauge (SPG), alternative air sources, and many other devices.

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Option c) multiply by the molar mass of the unknown is  the first thing you do after balancing the equation.

Utilizing the material's molar mass from the periodic table, the mass of the supplied substance is transformed into moles. Then, using the mole ratio from the balanced chemical equation, the moles of the provided material are changed into moles of the unknown.

Utilizing the molar mass of material A, first convert mass of substance A to moles of substance A. Next, use the mole ratio from the balanced equation to convert to moles of material B. Then, using the molar mass, convert moles of substance B to mass of material B.

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Full Question: When solving a mass to mass problem, what is the first thing you do after balancing the equation?

A) divide by the molar mass of the unknown

B) divide by the molar mass of the known

C) multiply by the molar mass of the unknown

D) multiply by the molar mass of the known

Answer:

what?

Explanation:

Answer:

Boiling

Explanation:

Boiling is an increase in energy.

Answer:

melting and condensation should go

The following types of muscle cells perform the functions described below:Skeletal muscles are involved in movements of the skeleton (bones).

Smooth muscles are used in the digestion of food.Cardiac muscles are used to help the heart beat and pump blood.What are skeletal muscles?Skeletal muscles are a type of muscle tissue that is attached to the bones of the skeleton. These muscles are responsible for the movement of the bones, which is why they are sometimes referred to as "voluntary" muscles because they are under conscious control.

What are smooth muscles?Smooth muscles are involuntary muscle tissues that are found in the walls of internal organs such as the stomach, intestines, and blood vessels. These muscles help move food and other materials through the digestive system.What are cardiac muscles?

Cardiac muscles are the muscles that make up the walls of the heart. These muscles work together to help the heart beat and pump blood throughout the body. Unlike skeletal and smooth muscles, cardiac muscles are involuntary, meaning they are not under conscious control.

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Answer:

You need water to digest your food and get rid of waste. Water is needed for digestive juices, urine (pee), and poop. And you can bet that water is the main ingredient in perspiration, also called sweat. Besides being an important part of the fluids in your body, water is needed by each cell to work.

Explanation:

I'm not sure but hope it helps

Answer:

beacuse we gona healthy drink many water bro

Endocytosis is the form of vesicular transport that uses motor proteins to bring fluid and solutes into the cell.

Endocytosis is a cellular process that involves the engulfment of extracellular material into the cell by the formation of vesicles. It is accomplished through the interaction of motor proteins with the cell membrane. There are different types of endocytosis, including phagocytosis, pinocytosis, and receptor-mediated endocytosis. In all these processes, motor proteins play a crucial role in the internalization of materials. Motor proteins, such as myosins and kinesins, use energy from ATP to move along the cytoskeleton and facilitate the inward movement of vesicles containing fluid and solutes. This process allows cells to internalize nutrients, signaling molecules, and other substances from the extracellular environment. By utilizing motor proteins, endocytosis enables the controlled uptake of specific substances into the cell and contributes to various cellular functions, including nutrient acquisition, receptor regulation, and maintenance of cellular homeostasis.

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Buried deposits of decayed animals and plants that are converted into carbon-rich fuels by exposure to heat and pressure over millions of years are called fossil fuels.

The three primary types of fossil fuels are coal, oil, and natural gas. These fuels are formed from the remains of ancient plants and animals that lived millions of years ago. Over time, the organic matter is buried, compacted, and heated, causing it to transform into fossil fuels. Fossil fuels are non-renewable resources and are a major source of energy for the world's economies. However, their use also contributes to climate change and environmental degradation.

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When genetic material is changed, which can be inherited, a genetic mutation occurs.

Genetic mutations can happen in a number of ways, including through errors that occur during DNA replication, exposure to certain chemicals or radiation, or inheritance from parents who have a mutated gene. In some cases, genetic mutations can lead to positive outcomes, such as increased resistance to disease or greater intelligence. In other cases, however, genetic mutations can lead to negative outcomes, such as increased susceptibility to disease, developmental disorders, or cancer. Some mutations have no effect at all and can be passed down through generations without causing any harm or benefit. Genetic mutations can be classified into three main types: substitution, insertion, and deletion. Substitution mutations occur when a single nucleotide in the DNA sequence is replaced with another nucleotide. Insertion mutations occur when one or more nucleotides are added to the DNA sequence. Deletion mutations occur when one or more nucleotides are removed from the DNA sequence. The effects of mutations depend on a number of factors, including the type of mutation, where the mutation occurs in the DNA sequence, and whether the mutation affects a gene that is essential for normal biological processes.

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Answer:

Explanation:

Three ways in which mutation could occur are

1) If an error occurs during DNA replication and it's not corrected in time by DNA polymerase.

2) If there is a deletion of a base(s) in the sequence of the DNA. The deletion of a DNA nucleotide/base could also cause a mutation as that could affect the formation of an enzyme or protein useful in building and/processing certain body parts/processes.

3) Thymine dimerization: Thymine dimers are mutations that prevent DNA from replication or even transcription hence preventing a cell from undergoing division (hence causes cancer). They are formed when covalent bonds are formed between the bases of a DNA sequence (somewhere around the carbon-carbon double bond).

The two effects are

1) It could cause cancer as described in (3) above (in the case of thymine dimer)

2) It could lead to deformity in an individual because of the gene that is supposed to code for the last finger has a base deletion, that could eventually lead to the absence of that finger or a shorter or "strange" finger.

Answer:

each nucleotide triplet (called a codon) specifies a particular amino acid. Thus, a nucleotide sequence in the DNA specifies a protein provided that a messenger RNA molecule is produced from that DNA sequence. Each region of the DNA sequence specifying a protein in this way is called a gene.

Answer:

Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.