Can someone smart help me with this ?

since in DNA adenine(A) pairs with thymine(T) and cytosine(C) pairs with guanine(G) the answer is D

Answer:

too much nitrogen in surface runoff can cause algae to overgrow

Nitrogen fertilizers used in large-scale agriculture could leave a legacy of pollution that would persist for decades in soil and groundwater, scientists in France and Canada warned, which published a study in the National Academy of Sciences magazine, " PNAS ". According to these scientists, the excess of these fertilizers in the environment has been linked to contaminated drinking water and can cause the rapid growth of algae that compromise aquatic ecosystems and coastal marine life.

Explanation:

Brainliest please?

Answer:

(C) DHM promotes apoptosis in cancer cells.

Explanation:

Since some cancers are caused by a lack of apoptosis (programmed cell death), DHM treats cancer by forcing apoptosis to occur in cancer cells, stopping their growth and division.

The choice which best describes a possible mechanism of action for this cancer drug is DHM promotes apoptosis in cancer cells. The correct option is C.

DHM is a chemical that is present in the plant, Hovenia Dulcis grow in Japan. It is a raisin plant and has several medicinal values. It is used in East Asia as a hangover medicine.

Apoptosis is a process of cell death, so if DHM promotes apoptosis in the cancerous cells, then it will reduce cancer by killing the cancer cells.

Thus, the correct option is C, DHM promotes apoptosis in cancer cells.

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O You know Karen's genotype and phenotype.  

because short eyelashes is a recessive gene and that means it's present in two copies

B. They are moved using transport proteins and pumps.

Answer:

B. they are moved using transport protiens and pumps

Explanation:

just took a test on this

Answer:

The atomic number is determined by the number of protons in the atom.

Neutrons can vary the mass of atoms of the same element; atoms of the same element with the different atomic masses are called isotopes.

Electrons do not contribute a meaningful amount of mass to an atom, and only vary the charge of the atom. A charge atom is an ion.

Explanation:

i hope this is right :)

Answer:

C. a mutation in the genetic code.

Explanation:

A mutation refers to any change or alteration to the nucleotide sequence of a gene caused by mutagen or mistakes during replication. Depending on the manner of occurrence, mutation can be of different types. In this question, partial DNA sequence for normal hemoglobin is given as: G-G-A-C-T-T-C-T-T while the partial DNA sequence for sickle cell anaemia is given as: G-G-A-C-A-T-C-T-T.

From careful observation of the two two DNA sequences above, it can be realized that a SUBSTITUTION MUTATION from T to A has occurred in the sequence of sickle cell. Note that substitution mutation is the replacement of one base by another in a sequence.

Acid rain can exhibit adverse affects on the environment by leaching aluminium from the soil and by creating nitrogen pollution.

Acid deposition or acid rain is a term, which comprise any kind of precipitation with acidic constituents like nitric acid or sulfuric acid, which fell to the ground from the atmosphere in dry or wet forms.

The ecological effects of acid rain are clearly evident in aquatic environments like lakes, streams, and marshes as it can be harmful to aquatic species and wildlife associated with it. When acid rain flows through the soil it can leach aluminum from the soil, which washes into streams and lakes.

Some kinds of animals and plants are able to withstand acidic waters and some amounts of aluminum. However, some of those which are acid-sensitive will get lost due to decline in pH.

Acid rain also comprise nitrogen, and thus it can result in nitrogen pollution in the coastal waters leading to decline in the populations of shellfish and fish in the regions. Therefore, nitrogen in the acid rain can exhibit deleterious effect on some of the ecosystems.

Thus, acid rain affects the environment by creating nitrogen pollution and by leaching aluminum from the soil components.

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Answer:

Photon radiation

A high-energy photon beam is by far the most common form of radiation used for cancer treatment. It is the same type of radiation that is used in x-ray machines, and comes from a radioactive source such as cobalt, cesium, or a machine called a linear accelerator (linac, for short).

The speed of radioactive particles is also an important factor in medical use. Beta particles travel very fast. This, combined with their small size, gives them significant penetrating power. In cancer treatment, for example, beams of beta particles can be created outside the patient's body and directed at tumors.

Answer:

b

Explanation:

The correct answer is D.

this is a protozoan that uses the tse-tse fly as a vector and causes african sleeping sickness. This parasite is usually found in csf

Answer:

Dendrite

Explanation:

Dendrite with cell body are cytoplasmic projections that are present at the begin of neurons and help increase the cell body surface area through their extensions. The cytoplasm of dendrites and that of cell body have the same number of neurons. Dendrite receive electrical impulses from neurons and send those information to the sons.

Answer:

I'm pretty sure its...

Explanation:

We know relatively little about deep sea ecosystems, making it harder to assess the impact of mining.

Deep sea mining has never been tried successfully, so we don't know exactly how it can be done so it is difficult to know the impact of deep sea mining.

The process of extracting and often excavating mineral deposits from the deep seafloor is known as deep-sea mining.

The deep bottom spans around two-thirds of the total seafloor and is found at ocean depths greater than 200 meters.

Deep-sea mining has been shown to affect marine biodiversity and ecosystems, but we still lack the knowledge and resources to safeguard them.

There are considerable gaps in our understanding of the deep sea's biodiversity and ecosystems since it is still understudied and poorly understood.

This makes assessing the possible effects of deep-sea mining and putting in place necessary safeguards to protect the marine ecosystem and the three billion people whose livelihoods rely on marine and coastal biodiversity challenging.

Hence , the correct option is A.

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Answer:

iron

Explanation:

Cellular respiration may be defined as the group of metabolic processes as well as reactions which occurs in the cells of the organisms that converts the chemical energy from the oxygen molecules or from nutrients into ATP or adenosine triphosphate and then releases the waste products. Thus it breaks the glucose and produces the ATP. Iron is an important element which are used in many important biological processes in the body like the cellular respiration and oxygen transportation.

Answer:

Although each of these strategies is being used to produce fuels, they are ... Algae can produce biomass very rapidly, with some species doubling in as few as 6 h, and ... Microalgae have additional advantages over terrestrial plants. ... The terrestrial models use land that is not presently used for food agriculture. One of the fuel sources of the future is algae, small aquatic organisms that convert sunlight into energy and store it in the form of oil. S. ... Algae could potentially produce up to 60 times more oil per acre than land-based plants. ... In the future, anything that runs on gasoline and diesel could also use biofuel from algae.

Explanation:

Answer:

heart

Explanation:

bc i got it right on plato

Answer:

A

Explanation:

Answer:

physical weathering

Explanation:

Answer:

During photosynthesis, plants capture light energy from the Sun to break weak bonds in reactants, such as carbon dioxide and water, and form carbon containing molecules, such as glucose. The carbon containing molecules can then be used:

✓ to assemble larger molecules, such as DNA, proteins, and fats.

Explanation:

Answer: 2. Population bottleneck

Explanation:

A Population bottleneck is a term used to refer to an event that causes the population of a species to reduce in very large numbers. Such an event can be environmental disasters like famine, the overhunting of a species or the destruction of its habitat.

In the case of the Cha-tham Island Robin, the bottleneck event must have been the introduction of cats and rats which then went on to hunt the birds to near extinction.

The water-holding capacity of a soil is the  the amount of water that a given soil can hold for plants to utilize

The soil particle size has the greatest effect on soil's capacity to retain water.

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Answer:

The correct answer is - yes, multiple exits but a minimum of 2 is a must.

Explanation:

An emergency escape plan is a documented map or plan of a building that is created for the safe evacuation in an emergency such as fire, smoke, natural disaster, or any panic situation.

In an emergency escape plan, there must be easy exits for faster and safe evacuation even in low visibility or smoke condition. Multiple exit routes are allowed to any escape plans, however, two is the minimum number of exits is compulsory.

Yes, there are exits alloted for emergency escape plans. It should be multiple in number but a minimum of 2 must be necessary.

An emergency escape plan is the urgent immediate egress or escape of people away from an area that contains an imminent threat of destruction, an ongoing threat, or a hazard to lives or property.

An emergency escape plan provides a path for the people of a particular area to move away from the risky or threatened places immediately. So, emergency exits play a significant role when there is any natural disaster, fire, smoke, etc. has occurred.  

Therefore, there are exits alloted for emergency escape plans. It should be multiple in number but a minimum of 2 must be mandatory.

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Answer:

Both gray wolves and killer whales have live births. And Both gray wolves and killer whales are carnivores

Explanation:

Answer:  The correct answer is Both gray wolves and killer whales have live births

Explanation:  This answer has been confirmed correct.

answer:  Genetic engineering

Explanation: im just smart

Answer:

D) lowering the energy for activation.

Explanation:

Just like chemical catalysts that accelerate the rate of chemical reactions, enzymes are biological catalysts that accelerate the rate of biochemical reactions.

Majorly, a catalyst works by lowering the activation energy required for a specific reaction. The lower the activation energy for a reaction, the faster the rate of that particular reaction.

Hence, an enzyme accelerates the rate of reaction by lowering activation energy of the reaction.

Answer:

Alzheimer's disease is a condition that causes dementia. It causes the brain to degenerate and die.

This causes people to decline in their ability to think, socialize, and live independantly.

Answer & Explanation:

Alzheimer's disease is an irreversible, progressive brain disorder that slowly destroys memory and thinking skills and, eventually, the ability to carry out the simplest tasks. It is the most common cause of dementia in older adults. As Alzheimer's disease progresses, people experience greater memory loss and other cognitive difficulties. Problems can include wandering and getting lost, trouble handling money and paying bills, repeating questions, taking longer to complete normal daily tasks, and personality and behavior changes.

Farming fertilizers washing into lakes is an anthropogenic cause of water pollution. Therefore, option (C) is correct.

According to the theory of anthropogenic climate change, people are primarily responsible for the present climatic shifts via the use of fossil fuels like coal, oil, and natural gas.

There are several sources of water contamination, both natural and man-made. The most frequent anthropogenic sources of water pollution, however, include: Agriculture runoff (which introduces fertilisers, pesticides, insecticides, and herbicides, as well as other pollutants, into bodies of water including lakes, rivers, and ponds). Therefore, option (C) is correct.

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Answer:

Soil type

Water availability

Ph level

Competitors

Explanation:

srry if this is not correct im not that smart

Answer:

C. 1.6

Explanation:

The formula for density is mass/volume, so 200/125 is 1.6g/mL.