Which of the following was
MOST responsible for the
turn-around in water quality
in Lake Washington?

A. adding additional fertilizers to the lake
B. adding excess pollutants to the lake
C. regulations on sewage treatment
D. addition of pollution-eating bacteria

As a river ages, the gradient levels typically decrease, while the sediment load may either increase or decrease depending on various factors.

The gradient of a river refers to the slope or steepness of its channel. Over time, as a river flows and erodes its surroundings, it tends to reach a state of equilibrium, where the slope becomes less steep. This is known as a decrease in gradient levels.

The sediment load of a river refers to the amount of sediment (such as sand, silt, and rocks) carried by the flowing water. It can vary based on factors such as the geology of the area, the climate, and the amount of erosion occurring in the river's watershed.

In some cases, as a river ages and continues to erode its surroundings, the sediment load may increase as more sediment is picked up and transported downstream. However, in other cases, the sediment load may decrease if the river reaches a point of balance where erosion and sedimentation are relatively equal.

Therefore, the change in sediment load as a river ages can vary depending on local conditions and the specific characteristics of the river.

For more such answers on sedimentation

https://brainly.com/question/9280527

#SPJ8

Answer: Community

Explanation: So a Population is a specific group of animals, such as a group of wolves, but in this pic, there are all kinds of different animals. An organism is a single living thing, like one cat by itself. An ecosystem is more like a whole forest, while a community is a single spot or area where all kinds of animals react to each other as you have prey and predator.

Ecosystem and community are very similar, but the community is a specific area,  and it's smaller than the ecosystem.

Plants employ the process of photosynthesis to transform water and carbon dioxide into carbohydrates and oxygen.

Light energy is absorbed by the plant during photosynthesis and transformed into chemical energy. The oxygen is released into the environment, while the water and carbon dioxide are disintegrated into their component elements.

In the plant, the sugars are kept for future use. It is possible to write the photosynthesis equation as follows:

Light energy + water + carbon dioxide →  sugars + oxygen.

Light energy → chemical energy can be used to describe the energy transformation equation.

Learn more about photosynthesis, here:

https://brainly.com/question/29764662

#SPJ1

The diversity of life is an important indicator of water quality since it reflects the overall health and ecological conditions of a particular water body.

A more comprehensive answer has been provided below:Diversity of life implies the number of different species present in a particular water body. A healthy water body has a rich and varied ecosystem with a diversity of plants, animals, and microorganisms that live in it. In contrast, polluted waterways usually have a limited variety of organisms living in them. High levels of pollution can cause the death of many aquatic organisms and severely reduce the diversity of species.Indeed, any aquatic environment with a diverse range of life is healthy and has good water quality.

On the other hand, water bodies with low diversity or no life forms at all are not suitable for any human-related activities.More than 100 types of organisms can survive in a healthy water body, such as insects, fish, and amphibians, among others. The presence of several species reflects the ecological integrity of the water and suggests that a wide range of habitat types is available. Therefore, the presence of diverse species in a water body is a clear indicator of its quality and environmental health, since it indicates the availability of necessary nutrients, a healthy oxygen supply, and good water quality.

To know more about quality  visit:

https://brainly.com/question/32332409

#SPJ11

Traits to have a trilobite to have be an index fossils- abundant and easily preserved,  widespread, easily identifiable to species.

Index fossils are fossils used to define and identify geologic periods. Index fossils must have a short vertical range, wide geographic distribution and rapid evolutionary trends.

Moreover, index fossil, any animal or plant preserved in the rock record of the Earth that is characteristic of a particular span of geologic time or environment. A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time.

Therefore, index fossils form in the same way other fossils form. The most common method is permineralization. When the body of a plant or animal is covered in a layer of sediment, minerals fill in the spaces left by the hard parts of their bodies or, in the case of plants, the leaves and stems.

Learn more about index fossils:

https://brainly.com/question/6073078

#SPJ1

Answer:

adjectives

Explanation:

*sigh*

Answer:

Phenotypes

Explanation:

I took the test

Explanation : I think it is B because a cladogram shows how species are related AND also shows the evolution between them.

Both electroporation and treatment with cold calcium chloride are effective mechanisms for inducing cellular transformation, and they can be used separately or in combination, depending on the specific requirements of the experiment.

Electroporation and treatment with cold calcium chloride are both mechanisms by which cells can be induced to go through transformation. Transformation is a process in which cells take up foreign DNA, which may result in the alteration of their genetic material. This process can be beneficial in various applications, such as in molecular biology and genetic engineering.Treatment with cold calcium chloride is a chemical method used to enhance the permeability of cell membranes, allowing the foreign DNA to enter the cells. In this method, cells are incubated with a solution containing calcium ions at low temperatures. This causes the formation of transient pores in the cell membrane, facilitating the uptake of DNA molecules.
Electroporation is a physical method that uses an electric field to create transient pores in the cell membrane. This method involves applying a short and intense electric pulse to the cells in the presence of foreign DNA. The resulting change in the membrane potential causes the formation of pores, through which the DNA can enter the cell.These methods have been widely used to introduce new genetic material into cells for various research and biotechnological applications.

Learn more about electroporation here:

https://brainly.com/question/27961264

#SPJ11

Answer:

Hi there!

Your answer is:

Dependent variable: Plant growth

Independent variable: Day length

Explanation:

The independent variable is Intentionally manipulated by the researchers. We know exactly what it will be each day, because we control it! Since the scientists are controlling the day length, that is your independent variable.

The dependent variable is NOT manipulated by the researchers. We are studying what the dependent variable does in reaction to the changing independent variable. Since we are recording & studying how the plant grows based on the day length, that is your dependent variable!

I hope this helps!

Answer:

Burning fossil fuels, cutting down forests and farming livestock are the main factors of global warming

Explanation:

for further explanation

2011-2020 was the warmest decade recorded, with global average temperature reaching 1.1°C above pre-industrial levels in 2019. Human-induced global warming is presently increasing at a rate of 0.2°C per decade.

An increase of 2°C compared to the temperature in pre-industrial times is associated with serious negative impacts on to the natural environment and human health and wellbeing, including a much higher risk that dangerous and possibly catastrophic changes in the global environment will occur.

For this reason, the international community has recognised the need to keep warming well below 2°C and pursue efforts to limit it to 1.5°C.

Greenhouse gases

causes_greenhouse_gases

The main driver of climate change is the greenhouse effect. Some gases in the Earth's atmosphere act a bit like the glass in a greenhouse, trapping the sun's heat and stopping it from leaking back into space and causing global warming.

Many of these greenhouse gases occur naturally, but human activities are increasing the concentrations of some of them in the atmosphere, in particular:

carbon dioxide (CO2)

methane

nitrous oxide

fluorinated gases

CO2 produced by human activities is the largest contributor to global warming. By 2020, its concentration in the atmosphere had risen to 48% above its pre-industrial level (before 1750).

Other greenhouse gases are emitted by human activities in smaller quantities. Methane is a more powerful greenhouse gas than CO2, but has a shorter atmospheric lifetime. Nitrous oxide, like CO2, is a long-lived greenhouse gas that accumulates in the atmosphere over decades to centuries. Non-greenhouse gas pollutants, including aerosols like soot, have different warming and cooling effects and are also associated with other issues such as poor air quality.

Natural causes, such as changes in solar radiation or volcanic activity are estimated to have contributed less than plus or minus 0.1°C to total warming between 1890 and 2010.

German roaches have flat bodies with six legs, two antennae projecting from their heads, and flat bodies, just like their American cousins and other cockroach species. Contrarily, American cockroaches are typically reddish-brown in appearance and develop to a length and width of around an inch and a half.

Cockroaches are an insect paraphyletic category that includes all Blattodea members with the exception of termites. Only about 30 of the 4,600 cockroach species have any connection to habitations by people. Some species are infamous for developing pest problems.

To learn more about Cockroach visit:

https://brainly.com/question/17283807

#SPJ4

Answer:

eph and sap and glm assessment and theory books

If two species of woodpeckers eat two different kinds of beetle larvae on pine trees in a forest, we would identify that as resource partitioning.

A species is both a unit of biodiversity and an organism's basic taxonomic classification in biology. A species is the largest collection of organisms in which any two people of the appropriate sexes or mating types can conceive a fertile offspring, typically through sexual reproduction. In addition, a species can be recognized by its karyotype, DNA pattern, anatomical features, behavioral traits, or ecological niche. Additionally, paleontologists employ the chronospecies concept because fossil reproduction cannot be investigated.

To learn more about species click on the given link: https://brainly.com/question/13259455

#SPJ4

In the past, some populations who consumed mostly corn (masa, corn tortillas, grits) avoided developing pellagra because of the use of limewater.

The populations who consumed mostly corn-based foods like masa, corn tortillas, and grits were able to avoid developing pellagra, a disease caused by niacin deficiency, due to the use of limewater. Limewater, also known as calcium hydroxide solution, was traditionally used in the processing of corn-based foods. When corn is soaked in limewater, it undergoes a process called nixtamalization, which increases the bioavailability of niacin (vitamin B3) and other nutrients in corn.

The alkaline nature of limewater helps to release niacin from the corn, making it more accessible for absorption by the body. By incorporating limewater in the preparation of corn-based foods, the populations were able to prevent or alleviate the symptoms of pellagra, which include dermatitis, diarrhea, and dementia.

To know more about pellagra , refer here:

https://brainly.com/question/29748601#

#SPJ11

Nonexperimental research refers to studies in which the researcher does not manipulate variables or control the environment but rather observes and measures existing variables as they naturally occur.

Three important types of nonexperimental research are descriptive research, correlational research, and observational research.

Descriptive Research: This type of research involves observing and describing behaviors, characteristics, or phenomena without attempting to establish cause-and-effect relationships. An example of descriptive research is a study that examines the prevalence of smartphone usage among teenagers. Researchers would collect data through surveys or interviews to describe the frequency and patterns of smartphone use in this population.

Correlational Research: Correlational research examines the relationship between two or more variables without manipulating them. It determines whether a relationship exists and the direction and strength of that relationship. For instance, a study investigating the relationship between sleep duration and academic performance in college students would collect data on both variables and analyze their correlation. This type of research helps identify associations but does not determine causality.

Observational Research: Observational research involves observing and documenting behaviors or phenomena in their natural settings. It aims to describe and understand behavior without manipulation. An example could be a study observing parent-child interactions at a playground to understand the dynamics and communication patterns. The researchers would record and analyze the behavior without intervening or influencing the participants.

To know more about Nonexperimental research

brainly.com/question/28039772

#SPJ11

The shortage of the resources along with the maintenance as this sis why the requirement that is getting lesser has impacted the industry. Although it contributes a large amount to the economy.

It is the sheep that was named as Dolly and was invented in 2002 by cloning.

The shortage of the  large-animal veterinarians taking place in many areas of country is  challenge to sheep industry and to the  other livestock industries as well . The same conditions led to the short fall in the United states as well.

Today, the domestic sheep count is 1/10 of  the size it was in  the World War II in the United states . The decrease is a  result of  the economic and  the cultural factors  that are coming together And it has left to the  wonders. Some of the  sheep that are raised for the wool  others primarily for food.

Learn more about sheep culture at :

https://brainly.com/question/14631956

#SPJ1

Answer:

The larva is the silkworm caterpillar. Since the silkworm grows so much, it must shed its skin four times while it is growing. These stages-within-a-stage are called instars.

Explanation:

Answer:

B

Explanation:

Genes are sections of DNA that hold the instructions for building proteins that ultimately code for traits.

The study found no statistically significant difference in methylation levels between smokers, former smokers, and never smokers.

The study aimed to investigate the effects of tobacco smoking on global methylation and hydroxymethylation in oral epithelial cells. Buccal cells were collected from 47 individuals, including smokers, former smokers, and never smokers. The DNA from these cells was extracted, and the levels of methylation and hydroxymethylation were measured using assays similar to enzyme-linked immunosorbent assays.

The results showed that there was no statistically significant difference in the average number of cigarettes between the smoker and former smoker groups. Although methylation levels were lower in smokers (3.1%) and former smokers (2.16%) compared to never smokers (4.16%), these differences were not statistically significant. This implies that tobacco smoking did not have a significant impact on global methylation levels in the oral epithelial cells of the study participants.

However, there was a notable finding regarding hydroxymethylation levels. The study revealed a two-fold increase in hydroxymethylation levels in never smokers compared to smokers. This suggests that the absence of smoking was associated with higher levels of hydroxymethylation in oral epithelial cells.

Overall, while the study did not find statistically significant differences in methylation levels between the smoking groups, it indicated a potential association between smoking status and hydroxymethylation levels in oral epithelial cells.

know more about methylation levels click here:

https://brainly.com/question/31442216

#SPJ11

Answer:

The land between the water has become more prevalent because due to droughts, the water has evaporated and dropped.

Explanation:

The stimulus that results in the increase of ventilation to maintain blood pH homeostasis is lower blood pH caused by rising levels of CO2.

The respiratory system responds to changes in pH to keep blood pH within the normal range. When the pH drops below the normal range, a person breathes more quickly to exhale carbon dioxide and raise the pH.

When the pH rises above the normal range, a person breathes more slowly to retain carbon dioxide and lower the pH. Carbon dioxide is acidic and in our blood, it reacts with water to form bicarbonate and hydrogen ions.

This reaction determines the pH of our blood. If the concentration of CO2 increases in our blood, the reaction will be pushed toward the production of more hydrogen ions, and the blood will become more acidic. The opposite is true when the concentration of CO2 in our blood decreases.

To know more about homeostasis visit:

https://brainly.com/question/31789146

#SPJ11

Biotechnology defined the responses of the practice by using technology in science experiments the practice of using technology in science that involves using living organisms to produce needed materials and technology to solve medical problems in living organisms.

An example of a biotechnology is brewing and baking bread by using this technology that utilizes living organisms, biological systems or parts of this to create or develop different products. In order to achieve the application of organisms, cells and molecular analogues for products and services that referred to the integeration of natural science.

Biotechnology is used for the potential for vaccines, drugs, to create novel diagnostics and other medical countermeasures needed to detect and prevent or treat infectious diseases.Team work and communication skills, Complex problem solving innovative thinking skills are needed for biotechnology.

Learn more about Biotechnology click on the link here:

https://brainly.com/question/16536830

#SPJ4

Retroviruses, such as HIV, are an exception to the central dogma as they reverse transcribe their RNA genome into DNA, challenging the flow of genetic information.

The central dogma of molecular biology describes the flow of genetic information from DNA to RNA to protein. While most viruses adhere to this central dogma, there are exceptions. The retrovirus is one such exception.

Retroviruses, like HIV, possess RNA as their genetic material, but they are unique in their ability to reverse transcribe their RNA genome into DNA. This DNA is then integrated into the host cell's genome, where it can be transcribed into RNA and translated into proteins.

This process involves the reverse transcriptase enzyme. Retroviruses essentially reverse the flow of information from RNA to DNA, challenging the central dogma.

In contrast, DNA viruses and RNA viruses generally follow the central dogma, with DNA viruses using DNA as their genetic material and RNA viruses using RNA to directly encode proteins without reverse transcription.

To know more about Retroviruses, refer to the link :

https://brainly.com/question/31713198#

#SPJ11

Answer: thalamus

n one, a neuron works with a sensory receptor, a cell, or cell process that is ... In most cases, the correct stimulus impinging on a sensory receptor will drive .the brain can carry two signals at once, ... "We found that there are periods of time when a given neuron responds to one stimulus ... Our brains are capable of processing multiple stimuli at once -- such as ... "Our working memory system is quite limited

Explanation:

Different combinations of stimuli and sense organs like taste and smell, hear and touch is processed by more than one brain region whereas in activated nerve cells, signal is not processed in the brain at all.

Hence, combination of taste and smell, hear and touch is processed by more than one brain region and in activated nerve cells, signal is not processed in the brain at all.

To know more about stimuli here

https://brainly.com/question/26306069

#SPJ2

Answer:

Heat or Thermal

Explanation:

Answer:

The right answer is "heat" or "thermal"

Explanation:

Electric lamps generate both light and heat. Heat energy is stored in thermal energy stores.