Many scientists have published, and continue to publish, peer-reviewed journal articles describing their research on the link between nitrate concentrations in drinking water and infant methemoglobinemia. However, there is no scientific consensus in this__________ science: Some studies have found strong links between nitrates and methemoglobinemia, whereas other studies have found no link between nitrates and methemoglobinemia.

This discrepancy may be cl variables in measuring nitrates in well water; too many variables is a common _________ in scientific studies. For example, private well water in rural areas also contains high

Answers

Answer 1

Answer:

frontier; limitation

Explanation:

In science, a “frontier” research refers to a type of investigation at the limits of current knowledge, raising concerns about the existing methodology and often accompanied with a speculative hypothesis. In general, frontier research investigates a particular question/issue which is still controversial in the scientific community, thereby challenging the established paradigm. On the other hand, variables are those factors, traits, or conditions which can be measured and changed in an investigation/study. Many variables in a given study design represent an important limitation because they cause noise to establish an association with a particular outcome (in this case, methemoglobinemia disease). A scientific study involves at least one independent variable (i.e., the variable that is not changed during the study) and one dependent variable (i.e., the variable that is changed).

Answer 2

The missing words are Frontier and Limitation.

See the attachment and link below for more about Frontier science:

https://brainly.com/question/16777091

Many Scientists Have Published, And Continue To Publish, Peer-reviewed Journal Articles Describing Their

Related Questions

Which of the following is a accurate depiction of primary ecological succession?

Answers

Answer:

This question lacks options, however, primary succession will be explained for detailed comprehension.

Explanation:

Ecological succession is the gradual series of changes that occurs in an ecosystem, charging it's structure and composition over time. It is of two types namely; primary and secondary successions.

Primary succession is characterized by the "LACK OF NO SOIL". It begins on a barren piece of land e.g rocks, with no form of life previously known to colonize the area. In primary succession, the barren land is first colonized by organisms such as lichens etc., which are collectively regarded to as PIONEER SPECIES.

where on the food chains are crocodiles

Answers

Answer:

Fresh water crocodiles eat frogs so crocodiles are third order consumers.

Explanation:

Hope this helped Mark BRAINLIEST!!!?

Answer:

Years ago, the Crocodile order was one of the top animals on the food chain.

Hope this helps :)

1. List the levels of biological organization in order.

2. Name and recognize the general characteristics of the 6 Kingdoms discussed in class.

3. List and define the shared characteristics of life

Answers

Answer:tissue

Explanation:

Tissues are groups of cells that have a similar structure and act together to perform a specific functio”. ... Groups of tissues make up organs in the body such as the brain and heart.

PLZ HELP MEEEEEEEEEEE

Answers

Explanation:

To measure large distances in the universe astronomers have coined a technique called 'cosmic distance ladder'. It is basically a succession of different methods applied in accordance to distances between objects.

Answer:

i d k

Explanation:

jud]stt give me brainlest plxzzzzzz

Explain the difference between inter-cooperation and intra-cooperation between species.​

Answers

Answer:

In evolution, co-operation is the process where groups of organisms work or act together for common or mutual benefits. It is commonly defined as any adaptation that has evolved, at least in part, to increase the reproductive success of the actor's social partners. For example, territorial choruses by male lions discourage intruders and are likely to benefit all contributors.

This process contrasts with intragroup competition where individuals work against each other for selfish reasons. Cooperation exists not only in humans but in other animals as well. The diversity of taxa that exhibits cooperation is quite large, ranging from zebra herds to pied babblers to African elephants. Many animal and plant species cooperate with both members of their own species and with members of other species.

Explanation:

I think?!

A wetland was drained to build a mall. Two years later, there were no more toads in
that
area. Why did the toads disappear?



A: the toads were frightened and went into the wood


B: The toads get their food from the wet land ecosystem

C: the toads were destroyed by the construction equipment

D: the toads died because toads cannot breathe out of water.

Answers

Toads food from wet land

A summary paragraph on a visit to vegetables garden in school

Answers

What do you mean by that?

this will motivate you to love plant crops and also eat health food .....so that you can become healthy ....

this will encourage you to teatch others about the importance of vegetables especially those who are adult that dependent on medice

this will push to enged you to work on agriculture so that you can have your own besisness and also get profit

water enters a plant cell through the what? no link please and hey des.

Answers

Answer:

water enter a plant cell through a tube called the xylem vessels

Describe oligospermia

Answers

Explanation:

magsagot ka ng iyo tang ina mo bobo

The core of a virus may contain either DNA or RNA. To identify which nucleic acid is present, a biochemist
could chemically analyze the virus for the presence of

Answers

Answer:

Ribose

Explanation:

Hope this helps, have a nice day :)



are organisms that can be

used as warning signals for

changes in an ecosystem.

Answers

Answer:

Bioindicators

Explanation:

Answer:

Indicator species and/or keystone species  

Explanation:

Indicator species are species (e.g., plants, animals, fungi) that can be utilized to determine changes in the environment. An indicator species can show the impact of pollution on an ecosystem. For example, mosses are indicator species that indicate the acidity in the soil. Moreover, keystone species are species that maintain the ecological balance in the ecosystem. When a keystone species is removed, the entire ecosystem is dramatically changed or may even cease to exist altogether. In consequence, keystone species can be used to define an entire ecosystem. For example, bees are a keynote species that contributes to balance the ecosystem by pollinating plants.

How much does a 5'9" woman weigh

Answers

128 to 168 lbs is the average weigh

Answer:

they can be from 100 lbs all the way to 1000 lbs

Explanation:

How does genotypic variation occur?

Answers

Answer:

Genotypic variation occurs when alleles are randomly sorted during sexual reproduction. ... Some types of organisms can increase genetic variation through reproduction. They are able to combine the genetic material of two parents, rather than copying the genetic material of a single parent.

Brainliest would be great!

PLEASE HELPP
A body is found lying on the ground, but lividity is present only in
the feet. It is deep purple in color. Investigators believe that the
victim was moved after death. Assuming environmental
conditions are average, which other conclusion might be drawn
from investigators working the scene?
M. The person has been dead less than 2 hours
N. The person has been dead at least 8 hours
0. The person has been dead less than 30 minutes
P. There is not enough information to determine
possible TOD

Answers

Answer:

I think the answer is that the person is dead less than two hours ago.

The volume of space in an atom where an electron is likely to be found is called the ______ of that electron. Multiple choice question.

Answers

Answer:

The volume of space in an atom where an electron is likely to be found is called the orbital of that electron.

Which statements describe steps in photosynthesis? Select 3

AGlucose is broken down into carbon dioxide and water.

B

Energy is stored in the bonds of ATP.

C

Light energy is absorbed by chlorophyll.

D

Organic matter and oxygen combine to break molecules into smaller parts.

E

Energy is used to convert carbon dioxide and water into sugar.

F

Energy in the form of heat is used to absorb carbon dioxide.

G

Water is broken apart to produce oxygen.

Answers

Answer:

Light energy is absorbed by chlorophyll. C

Explanation:

Answer:

Light energy is absorbed by photosynthesis

Explanation:

Photosynthesis takes place in two stages: the light-dependent reactions and the Calvin cycle. In the light-dependent reactions, which take place at the thylakoid membrane, chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the use of water.

Which treatment is best for a person with persistent diarrhoea? ​

Answers

Answer:

A i guess

Explanation:

A person with persistent diarrhoea the individual is most likely to lose a lot of fluids and electrolytes ,to restore this ORS is given which stands for Oral Rehydration Solution which is made by mixing water,sugar and salt.

Select the correct answer.
Which of these is an example of structural protein in plants?
A. Chitin
B. Lignin
C. Keratin

Answers

Answers :

I believe the ans is (B) lignin.

Assuming the answer is Lignin

A portion of a field has drained more rapidly than the rest, leading to drought conditions in that area several days before the water was needed in the rest of the field

Answers

Answer:

Due to sloppy nature of the field.

Explanation:

This problem of rapidly drainage can be solved if the field should leveled because the portion is rapidly drained due to sloppy nature of the field. Sloppy nature of land moves water at the faster rate from higher elevation to lower elevation. We can see in tillage practices, the farmers used levelers in order to level the field in order to provide even resources such as fertilizers and water. So we can say that this problem can be solved if the field will be leveled.

Part of ecosystem
Contains energy storage molecules?
(yes or no)
Energy storage molecules flowing in?
(yes or no)
Energy storage molecules flowing out?
(yes or no)

Producers
Consumers
Decomposers
Dead Matter
Abiotic Matter

(Answer the three questions for each of the topics)

Answers

Answer:

YES NO

Explanation:

PLEASE HELP!!!! WILL GIVE BRAINLIEST!!!

Answers

I think it’s option number three.

Scientists estimate the Earth has over 8 million different species of organisms classified over all of the kingdoms. Which of the following classification levels make up an organism's scientific name?
A.kingdom and phylum
B.genus and species
C.family and genus
D.class and order

Answers

B. genus and species

The researcher hypothesizes that the FXR1 gene codes for a protein that binds to mRNAs that encode some of the proteins that damage arteries. Individuals with a particular mutation of the FXR1 gene tend to have high levels of these proteins. Based on this information, predict how the FXR1 protein most likely interacts with the mRNAs.

Answers

Answer:

it is expected that FXR1 interacts with mRNAs by inhibiting them before they are translated into the ribosomes, thereby preventing the production of proteins that cause damage in the arteries.  

Explanation:

The translation is the cellular process in which a messenger RNA (mRNA) is used as template to synthesize a protein in the ribosomes. During translation, ribosomes catalyze the reaction that joins amino acids in order to create a polypeptide chain (i.e., an ordered sequence of amino acids). Diverse types of either synthetically or naturally occurring molecules can inhibit protein production at the level of translation (e.g., siRNAs, proteins, drugs, etc). In this case, it is expected that FXR1 inhibits the mRNAs that encode proteins capable of causing damage in the arteries, thereby a mutation that results in reduced and/or abolished FXR1 function (i.e., a loss of function mutation) will lead to a phenotype with high levels of these proteins.

Binding of FRX1 protein to mRNA will block the translation process of mRNA, thereby inhibiting protein synthesis.

What is the function of mRNA in protein synthesis?

mRNA or messenger RNA is made from the transcription of DNA and the information stored in it is translated into amino acids by ribosomes in the process of protein synthesis.

Thus, mRNA serves as a template for protein synthesis.

How does the FRX1 protein interact with mRNA?

The binding of the FRX1 protein will most likely block access to the codons present in the mRNA from being read by tRNA, thus inhibiting the synthesis of the proteins that damage arteries.

Therefore, binding of FRX1 protein to mRNA will block the translation process of mRNA, thereby inhibiting protein synthesis.

Learn more about mRNA and protein synthesis at: https://brainly.com/question/25797328

Biological evidence of the age of the earth includes _____.

Answers

Answer:

Biological evidence of the age of the earth includes radioactive dating of rocks, fossil evidence, comparative anatomy and molecular clocks

Which of the following materials is a good choice for a greenhouse framework?


wood

steel

stone

aluminum

Answers

Answer:

aluminum

Explanation:

Answer : Aluminum is the correct answer

An ecosystem has been interrupted by an invasive species. A new grass eating lizard lives in the same ecosystem as a grass eating rabbit. Hawks eat both lizards and rabbits. What would happen to the grass and hawk populations immediately? Why?​

Answers

There would be more hawks appearing because there is more food (both lizards and rabbits) and grass would lessen because there is another source feeding off of it.

I hope this helped ^^

Answer:

the grass population would decrease and hawk population would increase

Explanation:

PLEASE HELP ME ASAPPPPPPP

Answers

Answer:

hope i helped but i think its b or d

Explanation:

Answer:

it should be B

Explanation:

What are the similarities and differences between predation and parasitism

plz answer

Answers

Answer: Predation                             Parasitism

Larger and stronger than the prey. Smaller than the host organism.

Metabolic Dependency

There is no such metabolic dependency between the predator and a prey. There is an intimate association involving metabolic dependency on the host.

Progression

Explanation:

A parasite obtains food and shelter from the host whereas a Predator will catch and kill its prey.

ln the early development of human embryo,the skeleton is made almost entirely of​

Answers

Answer:

The skeleton consists of bone developing from mesoderm, except within the head where neural crest also contributes connective tissues. Each tissue (cartilage, bone, and skeletal muscle) goes through many different mechanisms of differentiation.

Explanation:

Hope it helps :)

The smallest unit of skeletal muscle tissue; examples includes myosin and actin. Intercalated Disce​

Answers

Answer: The fundamental functional unit of muscle is called a sarcomere. One muscle may contain as many as 100,000 of the repeating sarcomere units. In the sarcomere, the myofilaments (thick filaments and thin filaments) are organized into parallel units.

HOPE THIS HELPS

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