This type of mutation results when one or more nitrogen base pairs are randomly added to the DNA.

Multiplicative Mutation

Substitution Mutation

Insertion Mutation

Deletion Mutation

which one?

Answer:

Using a graduated cylinder.

Explanation:

By using a graduated cylinder we can determine the volume of liquids.

(1)Volume of liquid=10cm^3

(2)Volume of liquid after adding an irregular substance exceeds the first one by 20cm^3

(1)V+(2)V=(3)Vtotal

10cm^3+20cm^3=30cm^3

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Answer:

b

Explanation:

Food webs are the most accurate depictions of feeding relationships because they show the different ways in which plants and animals are linked based on their feeding habits. The last statement is correct.

In an ecosystem, the food web is present but not the food chain. In a food web, there are many food chains that are interconnected, and one animal depends upon another for food. In a food web, a frog can depend upon a grasshopper, an insect, etc. A snake can depend upon a frog, rat, or other small prey. In an ecosystem, there are many decomposers, such as bacteria and fungi, that feed upon the dead animals and plants.

Hence, a food web explains the feeding relationship among animals. The last statement is correct.

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The organisms that feed on dead and decaying matter are called Saprotrophs.

An organism that feeds on dead and decaying organic matter is called a saprotroph. These organisms are heterotrophic, which means that they obtain their food from other sources. They are important in the ecosystem because they break down dead organic matter and recycle it back into the soil, making nutrients available to other living organisms

Answer:

A. Saprotrophs

Explanation:

Saprotrophs are organisms that obtain their nutrients by feeding on dead and decaying matter. They play a crucial role in the ecosystem by decomposing organic material and recycling nutrients back into the environment.

These organisms secrete enzymes that break down complex organic compounds into simpler substances, such as sugars and amino acids, which they can absorb and utilize for their own growth and energy needs. Examples of saprotrophs include fungi (such as mushrooms and molds) and certain bacteria.

Unlike autotrophs, which can produce their own food through photosynthesis or chemosynthesis, saprotrophs rely on external sources of organic matter for their nutrition. They actively decompose dead plants, animals, and other organic materials, aiding in the process of nutrient recycling and decomposition.

Heterotrophs, on the other hand, are a broader category of organisms that obtain their nutrients by consuming other living or dead organisms. This includes saprotrophs, as well as other types of organisms such as herbivores, carnivores, and omnivores.

Parasites, meanwhile, are organisms that live in or on other organisms, known as hosts, and obtain their nutrients from the host while causing harm or damage to it. Unlike saprotrophs, parasites typically rely on a living host for their sustenance rather than feeding on dead and decaying matter.

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Answer:

The diagram represents the process of enlarging a rectangle using a scale factor of 3. The width of the original rectangle must be:

9 in.

11 in.

12 in.

17 in.

Explanation:

Answer:

pollution affects ecologist job by giving him something to work with

Explanation:

whether it be restoration or simply studying an ecosystem, however don't confuse this with benefitting him because he is probably not happy about it.

Answer:

TRUE

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Explanation:

Answer:

H. Wearing safety goggles.

Explanation:

Blowing sand can get in the eyes super easily.

Since GFR decreases with age , then the average value of GFR will be 90 to 120mL/min/1.73 m2

GFR (Glomerular Filtration Rate) can be said to be  the amount of plasma entering Bowman’s capsule per minute. It is the renal plasma flow × the fraction that enters the renal capsule (19 percent).578*0.19 = 110 mL filtrate/min. Glomerular filtration rate (GFR) is referred to as a blood test that checks to control how well your kidneys are working.

We can deduce from the National Kidney Foundation, normal results range from 90 to 120 mL/min/1.73 m2. Older people will have lower than normal GFR levels, since GFR decreases with age

In other to improve and have a healthy GFR it is important to avoid regular in-take of  processed foods  and choose fresh fruits and vegetables instead. Following a low-salt diet is essential because of it effect on blood pressure.

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The component of a vaccine that makes it effective is the antigen.

What is a Vaccine?

A vaccine is basically a biological preparation that provides active acquired immunity to a particular disease. It contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins or one of its surface proteins. Vaccines are designed to stimulate the body's own immune system to protect the person against subsequent infection or disease.

11) An antigen is a substance that causes the body to produce antibodies when it enters the body. These antibodies help the body recognize and fight the antigen if it enters the body again.

12) A vaccination is a way of introducing a weakened or killed version of a particular virus, bacteria, or toxin into the body. This weak or dead version of the virus, bacteria, or toxin stimulates the body's natural defense system to produce antibodies that are specific to that virus, bacteria, or toxin. These antibodies can then recognize and fight off the real virus, bacteria, or toxin if the body is ever exposed to it, thus preventing the individual from getting the disease. This is known as active immunity. The immunity created by the vaccination is typically long-lasting, and in many cases, lifelong.

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Answer:

Umbilical Cord

Explanation:

The unbilical cord uses the blood of the mother to carry oxygen to the blood of the fetus through the placenta.

These taxonomy terms that help scientists to classify species, are correctly placed as follows:

Domain

Kingdom

Phylum

Subphylum

Class

Order

Family

Genus

Species

Considering the human being, we have the following as an example:

Domain: Eukarya

Kingdom: Animalia

Phylum: Chordata

Subphylum: Vertebrata

Class: Mammalia

Order; Primates

Family: Hominidae

Genus: Homo

Species: sapiens

Exon/intron boundaries are typically characterized by a 5' GU splice junction and a 3' AG splice junction  is a characteristic of rna splicing in eukaryotes.

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In a population, 12 Students must complete their eval for the p allele to become fixed.

To determine how many more students must complete their evaluation for the p allele to become fixed, we need to calculate the frequency of the p allele in the current population. We can do this using the formula:

p = number of p alleles / total number of alleles

Since we are dealing with a diploid organism, each individual has two alleles, so the total number of alleles in the population is 26 (13 students x 2 alleles per student). If p = 0.146, then the number of p alleles in the population is:

number of p alleles = p x total number of alleles

number of p alleles = 0.146 x 26

number of p alleles = 3.796

We can't have a fraction of an allele, so we round up to 4 p alleles in the population. To calculate how many more students must complete their evaluation for the p allele to become fixed, we need to consider that fixation occurs when the frequency of one allele is 1 (or 100%). Since there are only two alleles in this population (let's call the other allele q), the frequency of q is:

q = 1 - p

q = 1 - 0.146

q = 0.854

So, if the p allele is to become fixed, all individuals in the population must have the p allele. Currently, there are 4 p alleles in the population, which means there are 22 q alleles (since there are 26 total alleles). Each student has two alleles, so there are still 11 students whose allele frequencies are unknown. To calculate how many more students must have the p allele for it to become fixed, we need to calculate the number of q alleles that remain:

number of q alleles = q x total number of alleles

number of q alleles = 0.854 x 26

number of q alleles = 22.204

Again, we can't have a fraction of an allele, so we round up to 23 q alleles. This means that at least 12 students (since each student has two alleles) must have the p allele for it to become fixed, which will result in a p frequency of 1 (or 100%) and a q frequency of 0.

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Answer:Like a brick wall, your body is composed of basic building blocks, and the building blocks of your body are cells.For example, epithelial cells protect the outside surface of the body as part of the skin and cover the organs and body cavities within. Bone cells build up bones to provide support for the body.

Explanation:

wrote an essay on it

Answer:

The correct answer will be option D.

A scientific process is a methodical process which is used to answer a scientific question based on the observations and experiments on the basis of which a hypothesis can be derived and answered.

In the given question "how much water does it take to make a plastic bag?" is a scientific question as it asks "how much quantity of water is used?" which can be tested by the experiments only on the basis of which hypothesis can be derived and answered.

Thus, option D is the correct answer.

Explanation:

The absence of flooding from rivers into forested floodplain wetlands would lead to adverse effects on soils, hydrology, and the overall biodiversity downstream, emphasizing the importance of maintaining the natural connection between rivers and floodplains for the health and functioning of these ecosystems.

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0-1 sec drops from 10 to 6 m at a constant pace; 1-2 sec pauses at 6 m; 2-3 sec descends from 6 m to 2 m at a constant rate; 3-4 sec stops at 2 m; and 4-5 sec descends from 2 m to 0 m at yet another constant rate.

The subject's verb normally acts onto the person, place, or thing known as the object. The obvious method to locate the object in a short phrase is to search for the word or pronoun that comes after the verb.

A physical object is a recognizable collection of stuff that may move as a unit in translation or rotation and may be confined by a recognizable boundary.

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Prokaryotic cells: cell wall, cell membrane, nucleus, central vacuole, made of cells, can obtain energy, grow and reproduce, DNA, and RNA.

Eukaryotic cells: cell wall, cell membrane, nucleus, mitochondria, membrane-bound organelles, central vacuole, made of cells, can obtain energy, grow and reproduce, DNA, and RNA.

Viruses: capsid, requires host cell, may cause disease, antibiotics may be used to treat infection, vaccines are used to prevent infection, living thing, DNA, and RNA.

Viruses are small infectious particles that propagate solely inside living cells of other organisms. Their structure comprises genetic material bound by a protein coat called a capsid, with some viruses displaying an additional lipid envelope surrounding the capsid.

Since viruses cannot self-reproduce, host cells are crucial to their replication and production.

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A dissecting microscope, with a maximum magnification of 100x, is used to examine larger specimens and three-dimensional objects.

This kind of microscope may be used to investigate structures that are difficult to mount onto flat slides or to study the exterior features of an object. The compound light microscope is used to view objects that cannot be seen with the eye, such as cells, or that require closer inspection, such as blood samples, whereas the dissecting microscope is more helpful when viewing objects with low magnification, such as organ tissues. A stereo or a dissecting lens makes use of the object's reflected light. It magnifies at low power, making it perfect for enhancing things that are opaque.

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Involuntary actions is when something happens unintentionally or without a person's conscious control, it is said to be occurring involuntarily

When something happens unintentionally or without a person's conscious control, it is said to be occurring involuntarily. Usually, the autonomic nervous system or reflexive reactions control these actions.

In contrast to voluntary acts, which may be controlled consciously, involuntary actions occur without conscious thought or intentional decision-making.

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A few techniques that can be used to anchor aquarium plants in substrate for healthy growth includes; Tieing the plant to a rock or piece of driftwood, Using plant weights, Planting the plant in a pot and Using aquarium glue.

Tying the plant to a rock or piece of driftwood: This method works great for plants with rhizomes, like Anubias and Java Fern, as you mentioned.

Planting the plant in a pot: Some plants can do well when planted in pots with their preferred substrate. This is good because it is in a controlled enviroment and you can move plant without disturbing the plant.

plant weights: This method is said to be okay for buoyant plants that tend to float away before their roots can establish. However this can be disadvantagous if the weight is made with lead.

aquarium glue: This can be very effective for certain types of plants. It's important to use a glue that is safe for aquarium use (i.e., cyanoacrylate-based glues).

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Answer:virus

Explanation:Viruses are microscopic biological agents that invade living hosts and infect their bodies by reproducing within their cell tissue. Viruses are tiny infectious agents that rely on living cells to multiply

Petri's and Jacobs’s purposes for writing these passages similar are both describe a person’s fears while thinking about escaping. Hence option d is correct.

Slavery is defined as a system where people are detained against their will and subjected to forced labor. In the United States, the treatment of slaves frequently included  assault, denial of education, and corporal punishment including whippings.

In order to encourage them to continue traveling, she had told them about the spot where they would stay, promising warmth and wholesome meals. Although Tubman did not physically lead them, he is recognized for indirectly assisting them by giving them thorough instructions.

Thus, Petri's and Jacobs’s purposes for writing these passages similar are both describe a person’s fears while thinking about escaping. Hence option d is correct.

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Answer:28

Explanation:

4x7=28

Answer:

I am not sure but I think it is high air pressure and high waves hope it helps

Answer:

high air pressure and high waves

Explanation:

Answer:

c.  Temperatures in the tundra range from extreme highs to extreme lows.

Explanation:

all other statements are true

hope this helps, pls mark brainliest :D

Answer:

a. tundra means "treeless land"