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Question: Does beta-carotene protect against cancer?
Beta-carotene supplements have been thought to protect against cancer. However, a study published in the Journal of the National Cancer Institute suggests that this is false. The study was conducted with 39,000 women aged 45 and up. These women were randomly assigned to receive a beta-carotene supplement or a placebo, and their health was studied over their lifetime. Cancer rates for women taking the beta-carotene supplement did not differ significantly from the cancer rates of those women taking the placebo.
1. What is the independent variable?
2. What is the dependent variable?
3. Which group is the control group?
4. Which group is the treatment group?
5. What variables should be controlled (kept the same in all groups) in this experiment?
What patient factors should you consider? Are supplemental hormones the best option for the patient, or would they benefit from alternative treatments?
The mass of an equal volume of water at the same temperature is 201 mg. Calculate the density of the unknown liquid at 25 °C.
Write an essay using the guidelines below. You will need to find at least three (3) outside sources for this essay, but you may need more to demonstrate a thorough examination of the topic.
What is Raciolinguistics? What are linguistic inequality and linguistic ideology ? How do they relate to enthnocentrism?
Discuss the impact of the Institute for Medicine report on patient delivery care. include citation.
Mr. Hampton is a 65-year-old male who has been admitted to the hospital with abdominal swelling, night sweats, and shortness of breath that has been getting
Using what you understand about threshold potentials and the all-or-none principle, explain how it is possible to sense different levels of pain.
What is Human Microbiome ? / How does one acquire it ?
At some point the bar was released with zero initial velocity.Find its velocity after long time. Find the bar's velocity as a function of time (for all times).
1. Did water flow in or out of the plant cells(potato cell)in each of the samples examined? How do you know this? 2. Would this experiment work with other plant cells? What about with animal cells? Why or why not?
What does it suggest about the relative strength of divergent natural selection relative to the homogenizing effects of gene flow?
Explain the differences between species richness and species evenness of a community.
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