Which fat has only single bonds between the carbon atoms in the fatty acid

Mutations are avoided during replication because DNA polymerase is able to add more codes.

Stop using plastic straws, use paper bags, and stop using plastic water bottles

i dont now but i think its c

Answer:

all populations of organisms in an living area

Explanation:

it makes more sense than the other 3 ;/

Answer:

If this is wrong im very sry, but i belive the answer is white blood cells

Explanation:

These are the cells that fight off infections and bactieria that is not sopposed to be in the human body, or any other living creature.

Answer:

Water pollution as a result of fertilizer runoff from farms is harmful because it initially changes the chemical composition of nearby streams and lakes !

Explanation:

Water pollution as a result of fertilizer runoff from farms is harmful because  it initially change the chemical composition and nutrient level of near by water bodies( streams and lakes).

Fertilizer increases the level of nitrogen and phosphorous in the waterbodies that can cause eutrophication.

Eutrophication can cause algal boom, reduction of dissolved oxygen content, lowers the penetration of sunlight and affect the fish and aquatic life.

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Answer:

It can exchange both matter and energy, exchange energy but not matter, Isolated systems can exchange neither energy nor matter

Open, closed, and isolated systems refer to how matter and energy are exchanged with surroundings. Open systems allow both matter and energy exchange, illustrated by a pot of boiling water. Closed systems allow energy but disallow matter transfer, like a sealed soda bottle, while isolated systems, purely theoretical, would allow neither.

An open system allows the exchange of both energy and matter with its surroundings. An example would be a pot of water on a stovetop, where heat (energy) can be lost to the air, and water can evaporate (matter) into the surrounding environment.

A closed system permits energy exchange but not matter. An example would be a bottle of soda with its cap on. Energy can be exchanged with the surroundings (the soda can be cooled or heated), but the matter (carbon dioxide in the soda) can't escape.

An isolated system allows neither the exchange of energy nor matter with its surroundings. An ideal example, although it doesn't exist in reality, would be a perfectly insulated box in which no energy or matter can enter or exit.

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Answer:

Increased greenhouse effect

Explanation:

The methane is a gas that falls in the category of ''greenhouse gases''. It is actually the most effective ''greenhouse gas'', much more effective than the CO2, though it has to be mentioned that that is on the short run. Basically, the methane has a property that enables it to trap the heat into the atmosphere. When the heat is reflected from the surface of the Earth it moves back toward the space, but the methane manages to trap big portion of that heat, resulting in an increased greenhouse effect across the globe.

D) all of the above are potential disadvantage for the use of adult stem cells.

I hope this helps you. ☺

The disadvantages for the use of adult stem cells over embryonic stem cells are D. All of the above  

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Answer:

In horizontal rock layers, the oldest layer is at the bottom. Each higher layer is younger than the layers below it.

Explanation:

Answer:

Its difficult to determine the absolute age so geologists use method to find a rock's relative age. Use the: LAW OF SUPERPOSITION: in horizontal sedimentary rock layers, the oldest layer is at the bottom. Each higher layer is younger than the layers below it.

Explanation:

(Rockaway Middle School)(Relative Ages Of Rocks)

Answer:

What are two of the products of the Krebs cycle

the 2 molecules of pyruvic acid are broken down into carbon dioxide and during that process NADH and FADH2 molecules are made

NADH and FADH2 are the two products of the krebs cycle.

~batman wife dun dun dun....

Answer:

Krebs's cycle or citric acid cycle is a metabolic pathway in which substrate is broken down into a final product to yield energy. The two products of Kreb's cycle are NADH and [tex]\bold {\text{FADH}_{2}}[/tex]

Explanation:

Kreb's cycle is also known as the tricarboxylic acid pathway, TCA, which releases the stored energy by the oxidation of acetyl coenzyme A. The cycle takes place in the matrix of mitochondria. The acid yields NADH and [tex]\bold {\text{FADH}_{2}}[/tex] , which are high-energy molecules used in the electron transport chain. NADH stands for nicotinamide adenine dinucleotide and hydrogen, whereas [tex]\bold {\text{FADH}_{2}}[/tex] stands for flavin adenine dinucleotide.

Therefore, the two products of Kreb's cycle are NADH and [tex]\text {FADH}_{2}[/tex].

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Answer:

Because the surrounding doesn't go exactly go into the body.

It has to go through the clothes first

Final answer:

Clothing lowers body temperature by reducing heat transfer due to its insulating properties, slowing down both conduction and convection. Clothing also has a lower emissivity, meaning it radiates less heat than skin.

Explanation:

Adding clothing helps to lower body temperature by reducing heat transfer to the environment. This occurs because clothes act as insulators that slow down both conduction and convection. Conduction is when heat is transferred through materials, while convection is the transfer of heat by the movement of fluids, like air. Wearing clothing, particularly thicker or numerous layers, creates an insulating barrier that traps heat close to the body, preventing it from being easily transferred to the cooler surrounding air.

Clothing also exhibits a lower emissivity than skin, particularly if it's light-colored, which means that it doesn't radiate as much heat as bare skin would. This is significant because air convection naturally removes heat from our body, and by wearing clothing, we lessen the rate of heat lost through these mechanisms. Proper clothing allows for body temperature regulation, ensuring that our body remains at a comfortable and healthy temperature by balancing between the heat produced by metabolic activity and the heat lost to the environment.

Answer:

The axial skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate. In the human skeleton, it consists of 80 bones and is composed of six parts; the skull bones, the ossicles of the middle ear, the hyoid bone, the rib cage, sternum and the vertebral column.

Axial skeleton is made up of the 80 bones within the central core of body.

Bone is living tissue that makes up the body's skeleton.

There are 3 types of bone tissue, including the following:

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The circuit is open. Thus option A is correct.

An open circuit is one in which the passage of electricity has been disrupted by a break in the path.

You complete an electrical circuit when you press a doorbell button, allowing household electricity to flow through the doorbell's inbuilt electromagnet. The electromagnet's magnetic field is then employed to power a device that produces the doorbell sound.

If that circuit will get open as shown in the image then the bell would not ring in this case.

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Answer:

The population of herbivores would likely increase.

Explanation:

The keystone species - Gray Wolf - are especially useful because they essentially regulate the population of herbivores - like deer - they are a good predator to have to maintain a healthy ecosystem. Without them, the herbivore population would likely continue to grow and this would mean that greenery and the food that the deer eat ( as well as other animals ) would slowly be pushed to lower numbers. This would likely have an effect on the landscape in the area too.

Removing a keystone species like the gray wolf from an ecosystem causes significant imbalances, leading to overpopulation of herbivores, overgrazing, reduced vegetation, and a decrease in biodiversity. These changes can trigger a trophic cascade and potentially collapse ecosystem functioning. Reintroduction of such species can help restore ecological balance.

Impact of Removing a Keystone Species

As predators, gray wolves manage the populations of large herbivores, keeping the ecosystem in balance. Without wolves, populations of animals like deer may increase unchecked, leading to overgrazing. This excessive herbivory can reduce vegetation, particularly in riparian areas, which are crucial for biodiversity. The decline in plant life can lead to soil erosion and degradation of water quality, further impacting other species within the ecosystem. Keystone species also indirectly influence other animals in the ecosystem. For example, by controlling coyote populations, wolves allow smaller prey species which coyotes feed upon to thrive, and by reducing elk populations, they facilitate the re-vegetation of riparian habitats, encouraging the diversity of species in those areas. If a keystone species is removed, this can cause a trophic cascade, a domino effect where the absence of the top predator disrupts the entire food web. Over time, this can lead to a collapse in ecosystem diversity and functioning. Conversely, reintroduction of keystone species has been observed to have positive effects on the biodiversity and ecological balance within their environments, as shown in the Yellowstone wolf reintroduction project.

Venus is closest to earth in mass and size. It is also very hot. Lol

Answer:

Venus

Explanation:

Temperature- Venus has a thick atmosphere, which traps heat. It is the hottest planet in our solar system. The surface temperatures can melt sturdy substances, such as lead.

Size- This planet is the closest to Earth's inner structure (with the cores) and also most similar in size.

A single trait can be controlled by multiple genes, and a single gene can control a single trait.

A single trait can be controlled by multiple genes. For example, most human traits, such as height, skin color, and weight, are controlled by multiple genes. This is known as polygenic traits. Multiple genes can interact to confer a specific characteristic or feature.

On the other hand, a single gene can control a single trait. For instance, traits like cleft chin or blood type are controlled by a single gene with two or more alleles. In the case of blood type, there are three different alleles that encode ABO blood type.

Therefore, both statements that a single trait can be controlled by multiple genes and that a single gene can control a single trait are true.

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Answer:

During mitosis, a cell divides into two identical cells referred to as daughter cells. In order for both cells to be fully functional and to be able to mature, they each need a complete set of DNA.

Cells needs a copy of their DNA before existing cells divide to produce new cells.

Cells make a copy of their DNA in other to ensures that each daughter cell gets a copy of the genome, and therefore, ensure successful inheritance of genetic traits.

Every time a cell undergoes mitosis, various enzymes work to split each DNA strand in half, and then replace the missing half on the separated strands with corresponding nucleotides, leaving you with two identical strands.

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The plants were expressing recessive or dominant traits through their flower colours

Answer:

The answer is that the plants have two alleles of the gene responsible for the color of flowers.

Explanation:

A gene is a part or section of a chromosome that has the genetic information or the code for a particular protein like flower color. Genes may have two or more forms of the particular gene, these forms are called alleles.

There are two alternative forms of the gene for flower color in the case of Mendel's pea plant. The presence of two alternative or distinct forms displays that there must be two alleles of the gene.

Thus, the correct answer that the plants have two alleles of the gene responsible for the color of flowers.

Answer:

E. climax

Explanation:

The point of equilibrium in a community is not something that happens very often in nature, in fact it is relatively rare, but there are several examples that have shown how this works. When an equilibrium is reached in a community, it is basically a community consisted of dominant, prominent, small number of species that manage to create a stable community. The state of equilibrium is also known as a climax community. This type of community appears when there's a situation in which the web of biotic interactions between the organisms becomes so intricate that there's simply no way that another organisms can be admitted into the community.

The role that the organism plays in the environment

The term niche, when used in the science of ecological biology, is used to define an organism's role in an ecosystem. Not only does its niche include the environment that a given organism lives in, but it also includes the organism's "job" in that environment.

An organism’s niche is the role an organism plays in a community.

In biology, the ecological niche refers to the function, role and response that an animal or plant species fulfills in a habitat or ecosystem.

The ecological niche of an organism depends on where it lives, what it does (how it transforms energy, behaves, reacts to its physical and biotic environment and transforms it), and how it is influenced by other species.

Therefore, we can conclude that an organism’s niche is the role an organism plays in a community.

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Answer:

muscular system helps move the body

Explanation:

Answer:

Muscular system

Explanation:

The muscular system is made of three types of muscles namely, smooth muscles, cardiac muscle, and skeletal muscles. Muscles are also attached to bones. Contraction of muscles leads to movement of the body. The main function of the integumentary system is to cover and protect the body. The digestive system is involved in ingestion of food, its breakdown into simpler elements and their absorption. The endocrine system maintains homeostasis by secretion of hormones.  

Answer:

share the same ancestors

Explanation:

Charles Darwin noticed at the Galapagos Islands that the finches, despite obviously having unique traits that classified them as separate species, they actually had many things in common as well, much more than differences. His hypothesis was that all of the different finches on these islands actually have the same ancestors in a small group of finches that migrated to the islands. As the birds started to occupy different niches, they started to specialize, which was mostly manifested in their beaks, as the specialization was mostly in accordance to what they ate, thus gradually giving rise to several different species.

Darwin's study of Galapagos finches supported the idea of adaptive radiation, where one species evolves into many to fill various ecological niches, exemplifying natural selection.

Charles Darwin's observation of finches on the Galapagos Islands led to the hypothesis that the variations in beak size and shape were indicative of adaptive radiation. This concept suggests that the finches originated from a single ancestral species and diversified into multiple species, each with adaptations specific to their environment, such as beak structure tailored to different food sources. For instance, some finches evolved strong, thick beaks to crack seeds, while others developed slender, sharp beaks suited for catching insects. Darwin's work provided crucial evidence for his theory of evolution by natural selection.

half of the heat produced by the Earth's core is:

D. The decay of radioactive elements

Geothermal energy is heat energy that is contained and formed in the bowels of the earth. geothermal energy comes from technological activities that exist in the earth that have occurred since the earth was created. Besides, geothermal heat also comes from sunlight that is absorbed by the earth's surface. In addition to the heat sources mentioned earlier, geothermal is thought to originate from the following phenomena:

- the decay of radioactive elements below the earth's surface.

- electromagnetic effects that are influenced by magnetic fields that exist on earth.

- the heat released by heavy metals due to sinking into the center of the earth.

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Grade: Middle School

Subject: Biology

keyword: geothermal, heat produced by the earth

Answer:

D. Radioactive decay of elements

Explanation:

Answer:

Vernicia fordii

Explanation:

Answer:

The ovary

Explanation:

Lightning strikes a tree and stars a forest fire.This a is an example of the 'atmosphere' affecting the 'lithosphere'.

Answer:

atmosphere  affecting the  lithosphere

Explanation:

A: Two different forms a plant can have

Answer:

the Hardy-Weinberg assumptions are:  no mutation, random mating, no gene flow, infinite population size, and no selection.

When a population is in Hardy-Weinberg equilibrium?  Evolution will not occur

***The Hardy-Weinberg equilibrium can be disturbed by a number of forces, including mutations, natural selection, nonrandom mating, genetic drift, and gene flow***

Explanation:

In biology, the Hardy-Weinberg principle assumes a large population size, isolated gene pool, random mating, no mutations or natural selection, with genotype and allele frequencies remaining constant at equilibrium. Allele frequencies are used to calculate genotype frequencies; for instance, if the frequency of homozygous recessive (aa) is 0.04, the frequency of the recessive allele (q) is 0.2 and of the dominant allele (p) is 0.8, leading to a heterozygote (Aa) frequency of 0.32.

Assumptions for the Hardy-Weinberg Equation

The Hardy-Weinberg principle is grounded in several key assumptions to predict the genetic variation within a population. First, the population must be large to minimize random genetic drift. Second, there should be no gene flow, meaning the population is effectively isolated with no migration in or out. Furthermore, mating must be random to ensure all alleles are equally likely to be passed on to the next generation. Additionally, mutations should not occur so that allele frequencies remain constant. Finally, there should be no natural selection, which implies that all individuals contribute equally to the gene pool.

Hardy-Weinberg Equilibrium

When a population is in Hardy-Weinberg equilibrium, the allele and genotype frequencies remain constant from one generation to the next, in the absence of evolutionary pressures. A population in equilibrium must meet the assumptions discussed above. In practice, it's unlikely for natural populations to remain in equilibrium due to factors like genetic mutations, natural selection, and non-random mating patterns.

Allele and Genotype Frequencies

An allele is a variant form of a gene. Genetic equilibrium suggests that the frequency of alleles in a population's gene pool remains constant over time in the absence of evolutionary forces. The genotype frequencies, which are expressions of allele combinations such as AA, Aa, and aa in a population, can be projected based on allele frequencies (p for dominant allele A and q for recessive allele a) if Hardy-Weinberg conditions are met.

Example Calculation

If we assume that the frequency of the homozygous recessive genotype (aa) is 0.04 (4%), we can find the square root of this frequency to determine q, which is the frequency of allele a. Thus, q equals 0.2. Because p + q = 1, we find that p, the frequency of allele A, equals 0.8. To calculate the frequency of the heterozygous genotype (Aa), we use the equation 2pq, which equals 2(0.8)(0.2) or 0.32 (32%).

Answer:

Option D, the females choose mates

Explanation:

This is a common way to fertilize in animals where male put in efforts to allow the female to choose their partners. Here, in this case the male ducks are of different bright colors thus they would compete among themselves to attract the female ducks for mating. Therefore, a female duck gets the opportunity to choose the best partner for itself. This is a way of natural selection to fertilize.

Hence, option D is correct.

Answer:

d

Explanation:

Answer:

A gland whose secretion consists of its own disintegrated secretory cells along with its secretory product. I think this is what a holocrine gland is im not entiery sure

Explanation:

A holocrine gland is a type of exocrine gland that secretes products by rupturing the secreting cell, with sebaceous glands being a common example. Holocrine secretion involves the death of the mature cell, which releases secretory products along with cell remnants, and is succeeded by new cell differentiation from surrounding tissue.

What is a Holocrine Gland?

A holocrine gland is a type of exocrine gland that releases its product by rupturing and destroying the entire gland cell. The mature cell accumulates secretory products and, upon bursting, releases these products along with the remnants of the dead cell. This process is known as holocrine secretion. One of the most common examples of holocrine glands in the human body is the sebaceous glands, which secrete oils that lubricate and protect the skin and hair. After the gland cells release their contents and are destroyed, new cells differentiate from the surrounding tissue to replace them, ensuring continuous function.

Other types of glandular secretion include merocrine secretion, where cells secrete their products without damage, and apocrine secretion, where the top part of the cell (apex) is released with the secretion. Holocrine glands, such as the sebaceous glands, are distinct because they result in the death of the secreting cells. The process of holocrine secretion is highly effective for the continuous supply of oils essential for skin and hair health.

Answer:

E. climax

Explanation:

The point of equilibrium in a community is not the most common thing in nature, in fact it is a relatively rare one, though there are enough examples that have shown how this is achieved and how it works. In essence, the point of equilibrium is when there's a small number of species that are dominant and prominent, and they manage to create a stable ecosystem. The point of equilibrium in a community is also known as a climax community. A community of this type appears when the web of biotic interactions between the organisms becomes so intricate that there's simply no place for another species to be admitted in it.