The history of scientific discovery of climate change began in the early 19th century when Ice Ages and other natural paleoclimate changes were first suspected and the natural greenhouse effect was first identified.
Evidence of past climate includes:
Buried in sediments at the bottom of the oceans and lakesLocked away in coral reefsFrozen in glaciers and ice capsPreserved in the rings of treesTo know more about climate change visit:
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How is it possible that muscle and fat cells make up 75% of human cells by weight but 84% of cells are red blood cells?
RBC’s make up about 84% of cells in the body, but they are only 4% of body weight. Whereas, 75% of total weight are fat cells and muscle cells. They’re both large cells but constitute only a minute fraction of the total number of cells.
How many cells is the human body made of?
The exact number of cells is still debatable. But to put it briefly, around 30-40 trillion. The long answer? Not yet determined.
What we do know, is that RBC’s (red blood cells) make up the majority of cells in our bodies. They make up only 4% of total mass, despite constituting 80% of all cells. The reason is that RBC’s measure 8 micrometers in diameter. The size of fat cells, however is around 100 micrometers.
The total number of cells to this date is still not defined, but we have a slight idea of what could be.
Therefore, the reason for RBC’s having 84% of cells and 75% of fat cells is their mass. RBC’s are only 4% of total weight because their measure is only 8 micrometers. Whereas fat cells are around 100 micrometers in diameter.
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Challenges in sustainable development
can you explain this diagram.. I will mark you brainlist..
help... !!!!
Answer:
Explanation:
environment is first then society then economy
PLEASE HELP…*image provided*
What cellular structure is degenerating and rebuilding in ms
Answer: Myelin Sheath
Explanation:
In Multiple sclerosis (MS), your immune system attacks the myelin sheath or the cells that produce and maintain it. This attack causes inflammation and injury to the nerve sheath and ultimately to the nerve fibers that it surrounds. The process can result in multiple areas of scarring (sclerosis).
Currently, new regulations control the use of pesticides and chemical fertilizers to reduce what?
Pesticides and fertilizers create water and air contamination and significant health consequences. Chemicals are regulated to reduce water contamination.
What are pesticides?Insecticides, fungicides, and nematicides are all examples of pesticides. It is essential to exercise population control over the unwanted organisms and insects that cause severe damage to the crops. On the other hand, pesticides can never be used in excess, as this would have a negative impact on living things.
Fertilizers are added to the soil in order to improve its fertility and thus the development of plants. In addition, they contain hazardous substances.
Both insecticides and fertilizers are known to include compounds that are potentially harmful. These chemicals almost certainly will lead to the contamination of water and air, in addition to causing health problems for the organisms in the surrounding area.
Contamination of water is a critical problem that has been on everyone's minds for a considerable amount of time. It is possible to lessen the amount of water contamination by lowering the amount of pesticides and fertilizers that are used.
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Differentiate between the lysogenic and lytic cycles. (1 point)
Viral proteins are synthesized during the lysogenic cycle.
O The virus injects DNA into the host cell during the lysogenic cycle.
O The host cell is destroyed during the lytic cycle.
O The host cell copies its own DNA during the lytic cycle.
Differentiate between the lysogenic and lytic cycles The virus injects DNA into the host cell during the lysogenic cycle.
The lytic cycle includes the replica of viruses using a number cellular to fabricate greater viruses; the viruses then burst out of the cellular. The lysogenic cycle involves the incorporation of the viral genome into the host cellular genome, infecting it from inside.
Inside the lytic cycle, the viral genome does no longer comprise into the host genome. within the lysogenic cycle, the viral genome consists of into the host genome and stays there throughou The main difference among lytic cycle and lysogenic cycle is that lytic cycle destroys the host cell while lysogenic cycle does no longer spoil the host mobile
The primary difference between lytic cycle and lysogenic cycle is that lytic cycle destroys the host cell whereas lysogenic cycle does not destroy the host cell. Viral DNA destroys the host cell DNA and arrests the cellular features within the lytic cycle. but, in the lysogenic cycle, viral DNA may merge with the host.
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Chlorophyll in the
chloroplast reflects which
color on the spectrum of
visible light?
A. red
C. violet
B. blue
D. green
Its green
Chlorophyll in the chloroplast reflects green color on the spectrum of
visible light.
What is chlorophyll?
The ability to produce their own nourishment exists in green plants. They achieve this through a process known as photosynthesis, which makes use of the green pigment chlorophyll. A molecule with a specific color known as a pigment can absorb light at various wavelengths depending on the color. Although there are many various kinds of pigments in nature, chlorophyll is special in that it allows plants to absorb the energy they require to develop tissues.The little structures called chloroplasts found in a plant's cells are where chlorophyll is found. This is the location of photosynthesis.Each pigment has a distinctive absorption spectrum that illustrates how it absorbs or reflects various light wavelengths. Chlorophyll and other pigments used in photosynthesis absorb wavelengths, creating electrons that power photosynthesis. All visible light wavelengths, with the exception of green, are absorbed by chlorophyll, the green pigment found in all photosynthetic cells. Because of this, plants seem green to us.
Hence, Chlorophyll in the chloroplast reflects green color on the spectrum of visible light.
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What evidence does the author provide to support the claim that genetic engineering has led to the advancement of
medical science?
OA. Genetic engineering involves processes such as genetic fusion that can be used to engineer the human gene
structure of cells, thereby creating improved or more advanced organisms.
B.
Genetic engineering alters the existing gene structure of an organism to create a new organism or to improve
certain chacteristics of the organism to improve its functioning.
OC. Genetic engineering allows for the production of genetically modified organisms (GMO), such as the first ever
type of insulin-producing bacteria that functions on a newer and improved level than the existing organism.
D. Genetic engineering allows scientists to artificially enhance genetic structure and holds the potential to cure
deadly diseases in humans that have no known cure.
The author provide evidence to support the claim that genetic engineering is Genetic engineering alters the existing gene structure of an organism to create a new organism or to improve certain characteristics of the organism.
Genetic engineering, also referred to as genetic alteration, is a process that uses technologies created in laboratories to change an organism's DNA. This could have adding new DNA, deleting a segment of DNA, or changing a single base pair (A-T or C-G).
Among other things, genetic engineering has been utilized in science and industry to create cancer therapies, brewing yeasts, and genetically modified plants and animals. As a component of GM technology, DNA is put into the genome of an organism. To produce a GM plant, new DNA is inserted into plant cells.
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An example of a relationship
where one organism gains but
the other is harmed would
be...
A. a tick on a deer.
B. a bird building a nest in a tree.
C. a fish swimming upstream.
Answer:
a) a tick on a deer.
Explanation:
A tick on a deer is an example of a relationship where one organism gains but the other is harmed.
Here the tick gets energy, but the deer loses its blood. Therefore, the option (a) is the correct answer.
Describe and list the contents of the dural sinuses, subdural space, and subarachnoid space.
(help needed asap. thank u so much) :)
People who get better grades in school will be more successful in life.
agree or disagree
5-7 sentences in length.
Answer:
the correct awnser is a
Explanation:
I got it right on my test
What is the meaning of the name restriction length polymorphism and where does it come from
The term "restriction fragment length polymorphism" (RFLP), which stands for individual changes (or variants) in DNA sequences at locations identified by restriction enzymes.
What causes restriction length polymorphism?Botstein et al. (1980) created restriction fragment length polymorphisms (RFLPs), which employ restriction enzymes to cleave the DNA molecule at particular locations known as restriction sites, producing various fragments with varied lengths.
What is RFLP, and what are some of its drawbacks?Restriction One technique for studying DNA used by forensic scientists is fragment length polymorphism (RFLP). The DNA strand is divided into pieces during this procedure by an enzyme. One restriction is that it struggles with dirt or mold.
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4
What is an angiosperm?
A. a division of plants that uses only
leaves to attract herbivores and
pollinators
B. a division of plants that doesn't use
seeds to reproduce
C. a division of plants that bear their
seeds within a layer of tissue that
protects it this is answer
D. a division of plants that leave their
seeds exposed on the scales of cones
Answer:
C
Explanation:
What advantages does a coelom provide the earthworm and the salamander?
Explanation:
The coelom refers to the body cavity derived from mesoderm germ layer and mainly found in multicellular animals and is positioned inside the body to surround and contain the digestive tract and other organs.
There are many advantages that coelom provides to the earthworm and the salamander. The digestive system of earthworms and salamanders is more complex, here coelomic fluid helps their body processes and assists as a hydrostatic skeleton.
The coelom's main advantage is its flexibility. The internal organs for example the heart, liver, lungs, and intestines develop, and they help to push into the coelom. The fluid of the coelom diminishes the organs for protecting the organs and also enables them to turn, bend, shift and move. In this way, coelom helps the animals internally to finish and run the system inside in the correct way. Coelom helps the earthworms and salamanders in building the correct system and protecting their organs to maintain and enable them to function properly.
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Hello, need help pls
Answer:
B. cuticle
Explanation:
The outside surface of epidermis is covered in a waxy coat called cuticle. This cover prevents the loss of water.
Chlorophyll a and bare
examples of what inside.
a chloroplast that
absorbs light energy?
A. Chloroplasts
C. White light
B. Thylakoids
D. Pigments this
Answer:
D. Pigments
Explanation:
Chlorophyll contains pigments (650; 700) which absorbs light
The most observed human variations
changes gradually rather than having
discrete boundaries as expected-This
gradual change is referred to as a?
A. Cine
B. Slow change
C. Gradient
D. Clinal
The most common human variants are those that vary gradually instead of having defined boundaries as would be expected as cine
The correct answer is A
Is a gradual transition preferable?For issues that don't call for irregular change and that can be improved continuously and sustainably, gradual change is an more stable method. When there is divided government, modest, incremental adjustments are frequently the only way any change could take place.
What exactly is gradual change?Instead of happening all at once, a progressive process or change happens in little increments over time. A steady, sluggish procedure is required to lose weight. Synonyms include steady, even, sluggish, and regular Alternative Words for gradual
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If a woman with normal vision that carried an allele for color blindness X N X n married a man with normal vision(XNY), what would be their possible offspring
HELP ASAP!!!! 20 POINTS!!!
Situation: A scientist collected the data below in relation the the reproduction of the cells in a science experiment.
Part A: Explain the type of growth that is shown in this experiment.
Part B: What stage of the cell cycle would you expect most of the cells to be in? Explain.
Answer: Part A: Exponential Growth
Part B: Interphase
Explanation: Part A: This is showing exponential growth because its increasing the quantity over time.
Part B: A cell spends most of its time in interphase because the interphase is the phase in the cell cycle that consists of three sub-stages which are (G1), (S), and (G2). It makes the cell grows and makes a copy of itself.
what does c 2h o stand for and what is the ratio between them
The simplest aldehyde, formaldehyde, has the chemical formula CH2O and is composed of hydrogen, carbon, and oxygen. Because of the 2:1 ratio of hydrogen to oxygen atoms in the formula CH2O, a carbohydrate can be identified.
Is water a sugar?The typical molecular formula for carbohydrates is (CH2O)n. These are the simplest carbohydrates and are needed as energy sources because they are both essential components of living things and fuel molecules. Perhaps glucose and fructose are the ones that people are most familiar with.
A carbohydrate is CH20?A monosaccharide has the generic formula (CH2O)n. Since monosaccharides are the simplest type of carbohydrates, they cannot be hydrolyzed or divided into other types of carbs.
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Anaerobic respiration is used in conditions that:
Answer:
Application of Anaerobic Respiration
It plays a critical role during biogeochemical cycles like Nitrogen Cycle, Iron Cycle, Sulfur Cycle, and Carbon Cycle. ...
It is used in sewage treatment plants and waste management systems. ...
Power generation through microbial fuel cells is an anaerobic respiration process.
Production of organic acids like lactic acid, propionic acid, acetic acid, butyric acid, etc. for commercial and household uses.
Explanation:
Essay explain the significance of the dens (Odin tour process) which is present on the second cervical vertebrate ( c2 or axis)
The dens present on the C2 vertebrae, is a site for attachment for the transverse, apical and alar ligaments. It is conical in shape.
What is the function of dens odontoid process?
The odontoid process is situated to the front of the spinal cord. It is used as an axis for rotation of the head. The C1 vertebrae which carries the cranium, rotates on this. This provides a lateral rotation of the cervical spine.
Therefore, the dens (odontoid process) is also a site present on the cervical vertebrae(C2) for attachment of transverse, apical and alar ligaments.
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Some fungi live with other
organisms in a beneficial
relationship.
Which of the following is one of
these relationships?
A. fungi and fish
B. fungi and green algae this
C. fungi and mammals
D. fungi and reptiles
Answer:B
Explanation: Fungi and green algae have a symbiotic relationship because the fungi gets pigment from the algae and the algae helps with absorbing water from the help of the fungi
Answer:
b) fungi and green algae
Explanation:
Some fungi live with other organisms in a beneficial relationship. Fungi and green algae is one of these relationships. Hence, the option (b) is correct answer.
A chemical agent that makes holes in the inner membrane of the mitochondria would:
-stop the movement of electrons down the electron transport chain.
-stop oxidative phosphorylation
-stop the citric acid cycle
A chemical agent that makes holes in the inner membrane of the mitochondria would stop the movement of electrons down the electron transport chain.
What is Electron?This is referred to as a subatomic particle and it has a negative charge. It is involved in a chemical reaction when it is either gained, lost or shared thereby forming different types of bonds.
A chemical agent that makes holes in the inner membrane of the mitochondria would stop the movement of electrons down the electron transport chain because of the loss of energy which occurs when this is done thereby making option A the correct choice.
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Which is one way that waves erode coastlines?
Back-and-forth movement loosens sediment and rock.
Large rocks are picked up and deposited in new areas.
Continuous impacts build up sediment and rock.
Loose sediment is picked up and blown to other locations. pls help
The option that is one way that waves erode coastlines is option A.) back-and-forth movement loosens sediment and rock.
What causes wave erosion?The main factors that cause sea wave erosion are hydraulic pressure, the force of waves hitting the beach, and the abrasion of sand and stones stirred up by the water constantly.
Note that a vibration is the back-and-forth motion of an object. Energy is carried through vibrations. A vibration is the back-and-forth motion of an object.
Hence, Sediments from cliffs and shorelines are eroded by waves. Ocean water's sediment functions as sandpaper. They degrade the shoreline over time. More erosion is brought on by larger waves and more sediment carried by them.
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Answer: a. Back-and-forth movement loosens sediment and rock.
Explanation:
Only a small amount of the energy stored in food is available to the next organism in a food chain as a result of which of the following?
Only a small amount of the energy stored in food is available to the next organism in a food chain as a result of losses to the environment because 90% of energy is lost in the environment as heat.
what is the food chain?A food chain is described as a linear network of links in a food web starting from producer organisms and ending at an apex predator species, detritivores, or decomposer species.
A food chain also shows how organisms are related to each other by the food they eat.
We know that energy is passed up the food chain from one trophic level to the next but only about 10 percent of the total energy stored in organisms at one trophic level is actually transferred to organisms at the next trophic level. The reason for this is that he rest of the energy is used for metabolic processes or lost to the environment as heat
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According to the cell theory cells from different organisms of function because they
Answer:
They are basic functional unit of life
(80-100 words) What is sickle cell disease? Describe its effects at a protein, cellular and organismal level.
Sickle cell disease (SCD) is a genetic disorder caused by a mutation in the gene that codes for hemoglobin, a protein responsible for carrying oxygen in red blood cells.
The mutation results in the production of an abnormal form of hemoglobin known as hemoglobin S (HbS). Sickle cell disease is inherited in an autosomal recessive manner, meaning that an individual must inherit two copies of the mutated gene (one from each parent) to develop the disease.
Effects at a Protein Level:
Hemoglobin normally has a rounded shape, allowing red blood cells to flow smoothly through blood vessels. However, in sickle cell disease, the abnormal hemoglobin S causes red blood cells to become stiff and take on a crescent or sickle shape under certain conditions, particularly when oxygen levels are low.
Effects at a Cellular Level:
The sickle-shaped red blood cells are prone to clump together, leading to the formation of blood clots. These clots can block blood vessels, causing a reduction in blood flow to various organs and tissues.
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Genetic
provides a mechanism for evolution.
Drift
depression
obstruction
inhibition
Drift genetic provides a mechanism for evolution.
Option A is correct.
How does genetics fit into the process of evolution?The variety of known evolutionary change-causing mechanisms has been substantially expanded by genetics. Most of these mechanisms are non-selective or even counter-selective, but they all involve converting variation between individuals into variance across populations over time and place.
What are the concepts of evolution and genetics?The study of evolutionary genetics focuses on how genetics affects the course of evolution. The evolution of genomic structure is being studied in this context. It consists of population genetics and evolution combined. Genome evolution is the process by which the genome's size and structure evolve over time.
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how do the questions or steps change as you work through the dichotomous key?
PLEASE I NEED THIS RIGHT NOW