x. There is no digestion of starch in the stomach because:
A the stomach contains hydrochloric acid.
B peristalsis is taking place.
C the stomach does not secrete a starch-digesting enzyme.
D salivary amylase does not work in acid conditions.

Answer:

Plants condut photosynthesis because they needs nutrients as well as foods so by this process they can easily find it from environment

Contaminated water is a type of water that is harmful to human beings due to the presence of harmful substances, pollutants, or impurities that make the water unsafe for drinking or other household uses. The characteristics of contaminated water can be identified through various indicators, which can either be physical, biological or chemical.

Physical indicators are visible and may include color, taste, and odor, while biological indicators are not visible and may include bacteria, viruses, and protozoa. Chemical indicators may include heavy metals, pesticides, and organic compounds, among others.

Physical Characteristics: Physical characteristics of contaminated water include cloudy or turbid appearance, unusual taste or odor, or discoloration of the water. The color may range from yellow to brown, blue to green, or even black.

Biological Characteristics: Biological characteristics of contaminated water include the presence of bacteria, viruses, or protozoa. These microorganisms can cause diseases such as diarrhea, typhoid, cholera, and dysentery.

Chemical Characteristics: Chemical characteristics of contaminated water include the presence of heavy metals such as lead, arsenic, or cadmium. Pesticides and fertilizers can also contaminate water and affect human health. Organic compounds like benzene and toluene can also be present in contaminated water, which can lead to health problems such as cancer and nerve damage.

Therefore, it is important to test water sources regularly to identify and monitor any contaminants that may be present. This can help prevent health problems associated with the use of contaminated water.

Know more about Contaminated water here :

brainly.com/question/16943782

#SPJ8

Answer:

because it is cheaper to afford

Explanation:

Answer:

a reduction in the krill population, because krill is the only biotic (living) factor answer choice

Explanation:

Answer:

Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.

The sun is the source of enegry

critically discuss three characteristics of an entrepreneur that may assist a school leaver to become a successful business owner. Answer in the form of an essay that includes an introduction, body and conclusion.

The process of weighing the pros and cons of different alternatives and making a choice is decision-making. Option C.

Decision-making is the process of making decisions by identifying decisions, gathering information, and evaluating alternative solutions. A step-by-step decision-making process helps you make more conscious and thoughtful decisions by organizing relevant information and defining alternatives.

Quantification options help you review your decisions. Record the potential benefits of your approach in the Pros column and potential negative outcomes in the Cons column. Then evaluate the strengths and weaknesses to show the importance of each. Considering the worst-case scenarios and possible issues with each decision is a good way to understand the strengths and weaknesses of different decisions.

Learn more about A choice here:-https://brainly.com/question/508452

#SPJ1

Depends. Certain gut bacteria that may produce LPS which causes inflammation which can contribute to the process of weight gain and insulin resistance. There have been studies over the years to see what was actually the result of the guy bacteria and one test said that people who had lower gut bacteria diversity and are  overweight all have levels of C-reactive protein in their bloodstream ( an inflammatory marker in the blood)

Answer:

education on HIV / AIDS less effective;

sexual attitudes / number of partners ;

availability of condoms ;

poverty / poorer / less money ;

sex industry ;

less primary health care / less likely to be diagnosed

Please mark as brainliest

Have a great day, be safe and healthy

Thank u  

XD

d)Grass, Goats, Tigers, and Maggots are the correct order for a food chain. The first trophic level of a food chain is the primary producers, which are plants, algae, and other organisms that produce their food through photosynthesis.

In this food chain, grass would be the primary producer, making up the first trophic level. The second trophic level is the primary consumers, which are herbivores that eat the primary producers. In this food chain, goats would be the primary consumers. The third trophic level is the secondary consumers, which are carnivores that feed on the primary consumers.

In this food chain, tigers would be the secondary consumers. The fourth trophic level is the tertiary consumers, which are carnivores that feed on the secondary consumers. In this food chain, maggots would be the tertiary consumers. Therefore, the correct order of the food chain, starting at the first trophic level, is Grass, Goats, Tigers, and Maggots.

To know more about the food chain refer to the  link   brainly.com/question/16065961

#SPJ4

Select the food chain that is in the correct order, starting at the first trophic level.

a)Maggots, Grass, Goats, Tigers

b)Goats, Tigers, Maggots, Grass

c)Grass, Maggots, Goats, Tigers

d)Grass, Goats, Tigers, Maggots

Answer:

So far scientists have not found a way to find the exact age of the Earth directly from Earth rocks because Earth's oldest rocks have been recycled and destroyed by the process of plate tectonics. Ancient rocks exceeding 3.5 billion years in age are found on all of Earth's continents

Explanation:

The answer is all of the above

Answer:

all of the above

i just took the lesson

One of the most effective and worthwhile methods of species preservation is the preservation and protection of wildlife habitats.

Therefore, we can confirm that one of the most effective and worthwhile methods of species preservation is the preservation and protection of wildlife habitats to allow the species that live in them to thrive.

To learn more about Habitats visit:

https://brainly.com/question/7038386?referrer=searchResults

Answer:

Photosynthesis is the process used by plants, algae, and certain bacteria to harness energy from sunlight and turn it into chemical energy.

Answer:

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.

Explanation:

Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduc

Answer:

Active transport

Explanation:

Active transport is the process of transferring substances into, out of, and between cells, using energy.

Answer: the movement of materials across cell membranes

Explanation: I've asked a search engine

Answer:

its frequency

Explanation:

their frequencies remain unchanged but their wavelength changes when the wave travels from one medium to another.

Answer:

Influence of masks on expiratory particles and flow, and associated wearing suggestions. All types of masks can reduce the front flow, but air leakage in other directions can occur when wearing surgical and handmade masks.

Or pressurized areas to non-pressurized areas.

Answer:

From areas of high concentration to areas of low concentration.

Answer

1. To change from Proline to Glycine

Step 1: Change the DNA of proline

Proline has the following four condons: CCG, CCC, CCU, and CCA.

And the Glycine codons are: GGT, GGG, GGA and GGC

So if the codons of Proline can be changed, C to G, we will have CCG, CCC, CCU, and CCA.

Which are the same as the codons of Glycine, when the tRNA translates, these will be amino acids of Glycine.

2. To change Tyrosine to Phenylalanine

The codons of Tyrosine are: UAU, UAC, UAA and UAG

Whereas the codons for Phenylalanine are: UUU, UUC, UUA and UUG

change the A to U in Tyrosine to get Phenylalanine

So the final Tyrosine codons will be: UUU, UUC, UUA and UUG.

Explanation:

Bones grow in different directions because they need to support the body in different ways. The different directions allow for flexibility and strength.

Answer:

are densely packed with numerous mitochondria.

Explanation:

Mitochondria are considered as the energetic centers of the eukaryotic cells. These organelles (mitochondria) produce energy in the form of Adenosine Triphosphate (ATP) through the mechanism of cellular respiration, i.e., mitochondria are the organelles where aerobic phases of cellular respiration occur. In presence of oxygen, mitochondria convert chemical energy obtained from foods to ATP, which is the energy coin that cells use to carry out all their metabolic processes (e.g., reproduction, growth, development, etc). Thus, cells with high metabolic requirements need to have many mitochondria in order to produce more ATP.

Answer:

All organisms with similar physical characteristics are believed to be related through a common ancestor. This means that they share a similar genetic makeup that makes them look and behave in a similar way. For example, all mammals share common physical characteristics such as mammary glands and hair, which suggests that they are all descendants of a common ancestor that had these traits. Similarly, all birds have feathers and lay eggs, which suggests that they are all descended from a common ancestor that had these traits. This theory of common descent is supported by the study of genetics, fossil records, and comparative anatomy, and is widely accepted by the scientific community as the best explanation for the diversity of life on Earth.

Explanation:

Answer: Hello the options related to your question is missing attached below are the missing options

answer : Calcium channels would remain closed, causing the neural impulse to travel back to the cell body. ( B )

Explanation:

When the membrane potential at the synaptic terminal does not cross the given threshold to an open Voltage-gated calcium channels, the propagation of the neural impulse will travel back to the cell body and this is caused by the calcium channels to remaining  closed

The statements that are true regarding absorptive and post-absorptive are -

option (2): During the absorptive state nutrients may be used immediately to meet energy demands

option (3): Glycogenolysis is most likely utilized to meet energy demands during the post-absorptive state

option (5): Gluconeogenesis most likely occurs at least 4 hours after the last meal.

Absorptive stage = fed state and post absorptive stage = fasting state.

The absorptive state is the time when ingested nutrients enter the circulation and part of these nutrients meet the body's energy needs while the rest is stored. The post-absorptive stage is the time when the GI system is depleted of nutrients and the body must rely on stored energy.

Option 2: Nutrients can be utilized directly to fulfill energy demands during the absorptive period.

Explanation: Taking a glucose solution while exercising provides athletes with instant energy. As glucose begins to be absorbed from the mouth.

Option 3: Glycogenolysis is most likely used to supply energy requirements during the post-absorption period.

Explanation: During the post-absorptive phase, the liver glycogen begins to break down and create glucose for the body's energy source.

Option 5: Gluconeogenesis happens at least four hours after the last meal.

Explanation: Our bodies require extra energy after around four hours of absorption. The gluconeogenesis process then begins.

Whereas,

Option 1: The absorptive condition lasts 4 hours, not 30 minutes.

Option 4: Blood glucose levels rise sharply during the absorptive period and do not fall.

To know more about absorptive and post-absorptive refer to:

https://brainly.com/question/9617492

#SPJ1

Both males and females can experience reproductive system disorders. These disorders can be caused by genetic factors, hormonal imbalances, structural issues, infections, or other medical conditions. In males, these disorders may include erectile dysfunction, infertility, testicular disorders, prostate problems, and hormonal imbalances. In females, they may include menstrual disorders, polycystic ovary syndrome, endometriosis, uterine fibroids, ovarian cysts, infertility, and hormonal imbalances. Treatment options vary depending on the specific disorder and may involve medication, hormonal therapy, surgery, or assisted reproductive technologies.

Answer:

Its The Gene Flow

Explanation:

Gene flow refers to the transfer of genetic material, specifically alleles, from one population to another through the movement of individuals. The correct option is C.

Gene flow occurs when individuals migrate or move between different populations, bringing their genetic variation with them.

When individuals migrate into a population, they introduce new alleles, potentially increasing the genetic diversity of the population.

When individuals emigrate from a population, they take their alleles with them, resulting in a loss of genetic diversity in the population they leave behind.

It can introduce new alleles that may provide adaptive advantages, enhance genetic variation, or counteract the effects of genetic drift.

It also has the potential to spread beneficial alleles throughout populations, improving their adaptive potential.

Thus, the correct option is C.

To know more about Gene flow, click here:

https://brainly.com/question/29992261

#SPJ4

Answer:

Due to small size.

Explanation:

The topical drug pass through the skin layer because of the ability to pass through the epidermis of the skin. The size of particles of these topical drug are very small which can easily pass through the skin layer and added into the blood stream where they perform its function inside the body on the targeted region. If the size of these topical drugs are large so it can not enter inside the skin so that 's why we can say that small size is responsible for entering of topical drug.

You need to show us the previous questions and reading material, or we won't understand the question...