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
bogdanovich [222]
3 years ago
13

Stella thinks that if people are exposed ultraviolet light then they are more likely get skin cancer. Stella designs an experime

nt wherein sample A consisted of people were exposed to ultraviolet light and sample B was not.
what is the independent variable?
Biology
2 answers:
alekssr [168]3 years ago
5 0
Independent variable: is the UV light exposure

Control group: people not exposed (sample b)

Dependent variable: skin cancer

Experimental group: (sample A)
lisabon 2012 [21]3 years ago
5 0

Answer:

The amount of UV light exposure.

Explanation:

The independent variable is the one variable that an individual must change during an experiment in order to investigate or test the dependent variable. Basically their relationship to the experiment or between themselves can be easily remembered through their names: The independent variable is the one that's controlled by the researcher and therefore does not <em>depend</em> on other variables from the experiment (amount of UV light), the dependent variable <em>depends</em> on the independent variable since its often the result from the latter's variations (cases where people developed skin cancer) and finally, the controlled variable is the one that's kept the same throughout the experiment (Time exposed to sunlight within group A or method through which patients were tested for skin cancer).

You might be interested in
Which organelle creates proteins?
Over [174]
The Answer is Ribosome
5 0
2 years ago
If the leaves of a geranium plant receive an adequate supply of raw materials, which graph shows how the rate of photosynthesis
Korolek [52]
I think the correct graph would have light intensity on the x-axis (because light intensity is the independent variable) and a measure of photosynthetic rate (either O2 evolution or CO2 consumption) on the y-axis (because the rate of photosynthesis is the dependent variable)... hope this helps
7 0
3 years ago
Read 2 more answers
A prospective groom, who is healthy, has a sister with cystic fibrosis (CF), an autosomal recessive disease. Their parents are n
son4ous [18]

Answer:

Explanation:

From the given information:

Since the parent are normal; Let assume that their trait is Pp

The affected sister  will be recessive in nature, so the trait will be pp

Now, the husband who is the groom will be a carrier with a probability of 2/3 since her sister is affected.

Also, the wife will be carrying a heterozygous trait since she is normal as well.

However, using Hardy-Weinberg assumption:

q^2 = \dfrac{1}{2500}= 0.0004

q = \sqrt{0.0004}

q = 0.02

Recall that:

p+q =1 \\ p = 1 - q \\p = 1 - 0.02 \\p = 0.98\\

Thus, p^2 = (0.98)^2

p^2 = 0.9604

2pq = 2 \times 0.98 \times 0.022

2pq = 0.0392

Finally, the required probability that there will be an affected offspring amongst the family is:

= \dfrac{1}{4} \times \dfrac{2}{3} \times 0.0392

= \dfrac{1}{153}

3 0
3 years ago
Which planet is made mostly of gases?
svet-max [94.6K]
 Jupiter<span> is made up mostly of trapped helium, hydrogen, and water. In our solar system, the four "gas giants" are </span>Jupiter,Saturn<span>, </span>Neptune<span>, and </span>Uranus<span>. The answer is Jupiter</span>
8 0
3 years ago
Read 2 more answers
Nuclear fusion is the combining of atomic nuclei to produce energy and new types of
galben [10]
Im not sure how to answer this since there were no choices given but I will answer by telling you what nuclear fusion is...

so basically nuclear fusion is the merging or combining of 2 isotopes, typically isotopes of hydrogen, under conditions of extreme temperature and pressure thus resulting in the release of massive amounts of energy. I think the answer to your question would be new types of electricity because the heat emitted from the reaction could be turned into electricity by using its steam. This is what happens in nuclear reactors  

i hop this answers your question 
3 0
3 years ago
Other questions:
  • Why is It important that water is able to rise from the roots of a tree to the very top ?
    6·2 answers
  • How do chemicles cycle and energy flow?
    8·1 answer
  • A man has blood group A and his wife has blood group B. Their first child has
    14·1 answer
  • In which situation would new technology be most likely to cause a change in an existing theory about new structures a cell
    8·2 answers
  • Alpha helix is a coiled structure stabilized by:
    13·1 answer
  • What are spring tides?
    5·2 answers
  • Please help me fast....
    8·2 answers
  • What is a mutation? How might a mutation affect one of the proteins you listed above?
    7·1 answer
  • Florida sits on a certain type of rock. What is the name of this rock and how did it form?
    7·1 answer
  • A 36-year-old client is prescribed digoxin for heart failure. what are two (2) contraindications for the use of digoxin?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!