PLEASE HELP IMSTUCK

Answer:

alluvial fan

Explanation:

correct on edge 2020

Answer:

Alluvial fan

Explanation:

I just took the assignment on edge!

Productivity in aquatic ecosystems increases through the availability of nutrients and sunlight, which are used by primary producers to photosynthesize, resulting in increased production and a diverse food web.

Aquatic ecosystems are characterized by a high level of productivity due to the availability of nutrients and sunlight. The primary producers in these ecosystems, including phytoplankton and macroalgae, use sunlight and nutrients like nitrogen and phosphorus to photosynthesize and produce organic matter. This organic matter then serves as the basis for the aquatic food web, supporting a diverse array of organisms ranging from small zooplankton to large predatory fish. Nutrient availability is an important driver of productivity in these ecosystems, and human activities such as agriculture and wastewater discharge can lead to excessive nutrient loading and harmful algal blooms. Managing nutrient inputs is critical for maintaining the health and productivity of aquatic ecosystems.

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Answer:

An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows

a biological community of interacting organisms and their physical environment.

Answer:

32

Explanation:

(6)8-(34-18)

48-16

32

Hope this helps!

Yes ! centrioles help prepare for cell division

Answer:

300L

Explanation:

So basically 3.9 L is equivalent to 3900 Kg of glucose and when u minus 3900 to 144 is basically 3000 which is 300L

First of all, we need to do the Punnet square to determine what will be the offspring genotype:

As we can see on the Punnet square, we have 4 different possible genotypes for the offspring, and in this case in particular, each genotype corresponds to a specific phenotype too, because this characteristic is linked to a sex chromosome.

We then have half the offspring blind, but half of it are women (25% out of the total offspring) and a half are men.

Also, we have the other half of the offspring not blind, with half of it being women and the other half being men.

Answer:

As the human population has grown, the need for more land has caused an increase in the cutting down of forest lands for habitation and farming. The result has been an increase in soil erosion, an increase in species extinction from habitat loss, and a reduction of oxygen supplied by the trees, as well as lower amounts of carbon dioxide being removed from the atmosphere. Industrial and personal use of fossil fuels has dramatically increased the amount of air pollution in the atmosphere while systematically using up the supply of the non-renewable resources such as coal, oil and natural gas

Explanation: Hope this helps! ^^

Answer:

Overpopulation can result in a/an  

scarcity

 of natural resources.

Explanation:

yes

In the given scenario, where pigweed has developed resistance to herbicides and poses challenges to cotton production in the deep south, the horizontal axis of the Production Possibilities Curve (PPC) could be labeled as "Labor-Intensive Techniques vs. Mechanization."

This labeling reflects the trade-off between employing labor-intensive techniques, such as manual weeding to control pigweed, and relying on mechanization, represented by the use of tractors and herbicides. The PPC illustrates the different combinations of labor-intensive techniques and mechanization that can be utilized in cotton production.

On one end of the spectrum, allocating more resources towards labor-intensive techniques involves manual labor for removing pigweed, which requires additional human effort and potentially higher costs. This option is depicted at one extreme of the horizontal axis.

On the other end, increasing mechanization implies a greater reliance on machinery, such as tractors and herbicides, to control pigweed efficiently. However, the resistant weed's ability to damage tractors introduces limitations and risks associated with this approach. This alternative is represented at the opposite extreme of the horizontal axis.

The PPC showcases the various trade-offs between labor-intensive techniques and mechanization, aiming to find an optimal balance that maximizes cotton production while effectively managing the challenges posed by pigweed resistance. It helps decision-makers visualize the available choices and make informed decisions regarding resource allocation and management strategies in response to the pigweed issue.

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Specimens are sometimes stained with dyes before they are viewed with a compound light microscope to make their structures more visible.

The use of dyes in microscopy is a significant technique because it allows scientists to examine the structure and behavior of cells and tissues. Additionally, staining allows scientists to distinguish between different cell structures, such as the nucleus, cytoplasm, and cell membrane, which would otherwise be indistinguishable. This technique aids in the identification and diagnosis of various diseases. Furthermore, staining allows for the examination of bacterial cells, which would otherwise be too transparent to be seen. Staining, in general, adds a contrast to the object, which helps the viewer to see the sample better.  In conclusion, staining specimens with dyes makes it easier for scientists to visualize and identify the different components of the specimen under a microscope.

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In the process of filtration, the molecular weight cut-off (mwco) membrane plays a crucial role in separating different solutes based on their sizes.

In this case, the 200 mwco membrane was used to filter a mixture of solutes. The membrane allowed molecules with a molecular weight of 200 or less to pass through while retaining larger molecules. Therefore, the solute that did not appear in the filtrate using the 200 mwco membrane must have had a molecular weight higher than 200. It is important to note that the mwco of a membrane is not an exact measurement, and there can be variations in the size of molecules that pass through the membrane.

In conclusion, to determine which solute did not appear in the filtrate using the 200 mwco membrane, we need to know the molecular weight of each solute in the mixture. Based on the properties of the membrane, we can assume that the solute with a molecular weight higher than 200 did not pass through the membrane. However, it is important to consider other factors that may affect the filtration process.

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Answer: Because, if there was erosion, the earth could not get in touch with inner land, so erosion can happen on coastlines, rivers, canyons, or any thing that has a body of water.

Explanation:

Answer:

three types of stimuli—mechanical, thermal, and chemical; some endings respond primarily to one type of stimulation, whereas other endings can detect all types. Chemical substances produced by the body that excite pain receptors include bradykinin, serotonin, and histamine."

Explanation:

From edge

Answer:

C.the arrows would point in a variety of directions

Based on your knowledge of other biological macromolecules, the reasonable assumptions about your macromolecule are:

Hence, the correct answer is C and D.

A macromolecule, such as a protein or nucleic acid, is a very big molecule crucial to biophysical processes. It is made up of many atoms that are covalently bound. The smaller molecules known as monomers are the building blocks of many macromolecules. Large non-polymeric molecules like lipids, nanogels, and macrocycles, as well as biopolymers (proteins, carbohydrates, and nucleic acids), are the most prevalent macromolecules in biochemistry. In addition to synthetic fibers, macromolecules can also be found in research materials like carbon nanotubes. Hermann Staudinger, a Nobel laureate, first mentioned high molecular compounds in his first pertinent paper on this subject in the 1920s, but he later added "molecule" to the end of the term to create macromolecule (in excess of 1,000 atoms).

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Based on your knowledge of other biological macromolecules, what are reasonable assumptions about your macromolecule?

Choose one or more:

A. It is synthesized via hydrolysis of monomers.

B. Monomers in the molecule are connected to each other via hydrogen bonds.

C. It contains carbon-carbon bonds.

D. Its cellular synthesis is directed by enzymes.

The smallest thing in the list below is a protein, which may form part of a virus, a bacteria, or any organelles such as a mitochondrion or a ribosome.

The molecular size of a protein is variable and it depends on the amount of amino acids that form such biomolecules, which are linked by peptide bonds to form the primary structure of the protein.

The molecular size of a protein is measured in Daltons which is a unit of mass that is equivalent to one-twelfth of free carbon C-12 atom at rest.

Therefore, with this data, we can see that the molecular size of a protein is variable and it depends on the relative amount of amino acids that such biomolecule contains, and this s molecular size is measured in a unit of mass called Daltons.

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Answer:

D

Explanation:

D: A statistical test having high power also has high probability for finding significant support.

Answer:

D

Explanation:

Understanding gas and vapours in a work setting is incredibly important for workplace safety. Gas and vapours can contain noxious substances that, if exposed to, can lead to serious injury or health implications.

In order to prevent such accidents, employers must perform risk assessments in order to assess and identify any areas of risk and put in place control measures to limit them. If gas and vapours are used onsite, then suitable ventilation and extraction systems should be in place.

Employers should also ensure that their staff are aware of the potential risks associated with such substances and provide adequate training and instruction in how to work safely. Finally, employers should also check that any necessary personal protective equipment is provided and communications are in place to be able to notify relevant emergancy responders in case of an accident.

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Darwin's observation and idea were crucial because they provided a new explanation for the diversity of species on Earth. Prior to Darwin, many people believed that species were fixed and unchanging, and that they were created by a divine being.

However, Darwin's idea of natural selection suggested that species change over time through a process of small variations that accumulate and lead to the development of new species. This theory helped to explain the incredible diversity of life on Earth, and it helped to establish the field of evolutionary biology.

Darwin's idea was also important because it challenged the prevailing view of the time and required people to rethink their assumptions about the natural world.

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Abiotic components refer to the physical elements of the environment, such as soil, water, light, and gas, whereas biotic components refer to the living elements, such as plants, animals, fungus, and bacteria.

When they begin interacting with one another, biotic and abiotic rudiments of an ecosystem come applicable. For case, biotic factors like shops serve as food for other living effects. The soil is an abiotic element that supports factory growth by supplying nutrients and other necessary constituents.

Abiotic factors like soil, nutrients,etc. are formed with the aid of biotic factors, which depend on abiotic factors for their life. Abiotic rudiments can differ from one ecosystem and position to another.

They substantially serve as life sympathizers. They control the number, variety, and rate of population increase of biotic rudiments in an ecosystem. therefore, they're appertained to as limiting factors.

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Answer:

Genes!!

Explanation:

Everyone is made up of Genes, they get passed down sometimes. For example, If someone has blue eyes, but their parents have brown eyes their grandparents more than likely have blue eyes.  I hope this help you!! ^^

The answers to the questions are as follows:

Question 1:

Response: B speciation

Question 2:

Response: A gene flow

Question 3:

Response: B speciation by geographic isolation

Geographic isolation plays a significant role in shaping the evolution of species. Let's address each question individually:

Question 1:

Geographic isolation may result in:

Response: B speciation

Geographic isolation refers to the physical separation of populations of organisms due to geographical barriers such as mountains, rivers, or islands. When populations become isolated from each other, they experience different environmental conditions and selective pressures. Over time, these distinct environments can lead to genetic and phenotypic differences between the isolated populations. This divergence in characteristics can eventually result in the formation of new species, a process known as speciation. Therefore, option B, speciation, is the correct response.

Question 2:

Geographic isolation causes a reduction in ____, eventually resulting in dissimilarities in a once-similar population of organisms.

Response: A gene flow

Geographic isolation restricts or limits the movement of individuals between different populations. This restriction reduces the gene flow, which is the transfer of genetic material between populations. Gene flow is an important mechanism for maintaining genetic diversity and homogeneity within a population. When gene flow is reduced, isolated populations experience different genetic changes and accumulate genetic variations independently. Over time, these genetic differences can lead to dissimilarities in once-similar populations.

Question 3:

Allopatric speciation is another name for:

Response: B speciation by geographic isolation.

Allopatric speciation refers to the process of speciation that occurs when populations are geographically isolated from each other. The term "allopatric" means "different homeland." In this form of speciation, the physical separation of populations by a geographical barrier prevents gene flow between them. As a result, the isolated populations undergo independent evolutionary changes, leading to the formation of new species. Therefore, option B, speciation by geographic isolation, is the correct response.

In summary, geographic isolation can lead to speciation (Question 1), it reduces gene flow (Question 2), and the process of speciation by geographic isolation is known as allopatric speciation (Question 3).

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Answer:

D

Explanation:

i think so. If im wrong i am so sorry

The founder effect is the loss of genetic variety that happens when a new population is founded by a small number of individuals from a larger population, according to population genetics. Ernst Mayr was the first to thoroughly explain it in 1942, based on previous theoretical work by people like Sewall Wright.

The most likely cause of the difference in the seal with albinism is the lack of the pigment melanin in the melanocytes.

Albinism is a genetic condition that affects the production of melanin, the pigment responsible for giving color to skin, hair, and eyes. Albino animals, including seals, have a lack of melanin, which results in white fur, skin, and eyes with pink irises.

The cause of albinism is most likely a mutation in a gene that is responsible for the production of melanin. In most cases, albinism is an inherited condition that is passed down from parents to their offspring. The exact cause of the mutation depends on the specific type of albinism, but it typically results in a reduction or complete loss of melanin production.

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Transporting waste to other countries saves land for housing statement best describes an environmental consequence of sustainable waste management.

Sustainable waste management strives to reduce the quantity of solid waste that's also disposed of in landfills or by incineration. Materials are kept in use for as long as feasible.

In addition to promoting a healthy natural environment that benefits both people and animals, sustainable waste management is essential to releasing precious land from landfills, enhancing energy production, creating jobs, and lowering the price of logistics and transportation.

Not only would reducing trash benefit the environment, but it will also save money or lower disposal costs.

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