1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Inga [223]
3 years ago
14

Since the early 1960s, fluoride has been added to many sources of drinking water to prevent cavities in teeth. This is called fl

uoridation. There are some who say that this is unnecessary and increases the risk of cancer. In 1993, the Subcommittee on Health Effects of Ingested Fluoride of the National Research Council, part of the National Academy of Sciences, conducted an extensive study about the link between fluoridated drinking water and increased cancer risk. The study included data from more than 50 human disease studies and six animal studies. The Subcommittee concluded that none of the data showed a link between fluoridated drinking water and cancer. A 1999 report by the CDC supported these findings. The CDC report concluded that studies so far have produced "no credible evidence” of a link between fluoridated drinking water and an increased risk for cancer. According to the article, what valid claim came from the National Research Council? There is no link between fluoride exposure and increased cancer risk in humans. There is a possible link between fluoride exposure and increased cancer risk in humans. There is a definite link between fluoride exposure and increased cancer risk in humans and animals. There is a possible link between fluoride exposure and increased cancer risk in animals.
Biology
2 answers:
valentina_108 [34]3 years ago
8 0

Answer

A. There is no link between fluoride exposure and increased cancer risk in humans.

Explanation

The National Research Council claim was that the data obtained from the extensive study about link between fluoridated drinking water and increased cancer risk did not show the connection. Though studies have been made to investigate the possibility of a link between fluoridated drinking water and increased risk for cancer, no credible evidence has proved any connection.



mestny [16]3 years ago
7 0

The correct answer is:

There is no ASSOCIATION between fluoride exposure and increased cancer risk in humans.

Answer choice A.

You might be interested in
Which food contains the material needed to build muscle, but does not contain the macromolecules that give quick energy?
natima [27]
The answer is A. steak
7 0
3 years ago
Read 2 more answers
A wildlife biologists has adopted a number of techniques to protect the Willow Flycatcher, a bird that often nests and feeds in
Ilia_Sergeevich [38]

Answer:

B) Willow Flycatchers can lose eggs to squirrels, weasels, and other predators. The biologist attempts to protect nests by putting metal collars around the base of the windows that keep ground predators from climbing up to reach the nests.

Explanation:  

The dynamic of a species depends on its interaction with other species. So in species management plans, among other aspects, it is important to know the trophic webs in which a species is involved and the interactions of that taxonomic group with the others in the chain.

Top-down techniques take decisions from the most global variables to the most inferior or specific ones. When referring to the trophic web, the most global variables are related to top predators, while the most inferior ones are related to the first levels of the chain.

If the researcher needs to adopt a top-down technique, the most suitable one to choose is to protect the Flycatcher´s nests from predators. Predators are the carnivores in the chain that feeds on the Flycatchers´ eggs. This action will interrupt the link between the superior predators and the flycatchers, allowing this last species to recover its population size.  

3 0
3 years ago
Can someone help me !!
STatiana [176]

Answer:

do it ur self stop being lazy dang

Explanation:

6 0
2 years ago
What is recombination and how does it work? is it the same thing as crossing-over? if an organism practiced self-fertilization,
Sever21 [200]
Recombination is the method by which organisms can randomly assort their genotypes amongst each other to create offspring with a different haplotype than either of its parents. This can be done by either copying sequences from one homologous chromosome to another (no physical exchange) or crossing over (physical exchange. 
Crossing over is a mechanism in eukaryotes by which recombination can occur, in which the two homologous chromosomes contributed by both parents literally cross over and break at certain points to exchange certain sections of the chromosomes amongst each together.
Self fertilizing organisms typically do not produce offspring that are genetically identical. However, this has an inbreeding effect on its offspring, since it is recombining from the same genotype and so has a higher chance of producing homozygous offspring. This is very detrimental for mammals and some eukaryotes, but in some other organisms such as bacteria, homozygosity is typically not an issue.
8 0
3 years ago
Which of the following would be the most effective means of controlling current water pollution of US surface water?
Dovator [93]

Answer:

Shutting down factories that discharge materials to the rivers.

The largest sum of US pollution currently caused by factory-related substance

Explanation:

my pfp!

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the largest organelle in plants
    5·2 answers
  • What part of the theory of evolution might a comparison of the embryos shown above<br> support?
    9·1 answer
  • Which cold-related emergency is characterized by localized itching, redness, and recurrent edema on exposed or poorly insulated
    12·1 answer
  • When heat treatment is used as to control microbial growth, what is the immediate impact of this increased temperature?
    8·1 answer
  • 1.Please explain three factors and how these factors affect population size.
    14·1 answer
  • . Which of the following occurs over a small area? polar easterlies o the Coriolis effect O horse latitudes O sea breezes​
    10·1 answer
  • Why are rocks not melting deep in the earth’s crust?
    12·1 answer
  • Coat color in rabbits is represented by a gene (C). The different phenotypes are dominant in this order: Agouti &gt; chinchilla
    12·1 answer
  • What is a photostem plz hurry
    13·1 answer
  • The brain is encased within the ___, which is the large, superior part of the skull
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!