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To help prevent people from getting the Ebola virus, countries around the world paid to help doctors develop a new vaccine. Now that the vaccine has been made, doctors will need to experiment on a large number of people to find out if it works safely.

What is the greatest limitation that scientists are dealing with as they try to figure out how to experiment with the Ebola vaccine?

A: time
B: complexity
C: money
D: ethics

Answers

Answer 1

D: ethics
Help people not get Ebola virus.

Answer 2

The greatest limitation that scientists are dealing with as they try to figure out how to experiment with the Ebola vaccine is ethics. Hence option D is correct.

Conducting experiments on a large number of people to determine the safety and efficacy of a vaccine involves ethical considerations and stringent regulatory frameworks.

Ethical concerns revolve around ensuring the well-being and rights of the participants involved in the clinical trials. Scientists must ensure that the potential risks to participants are minimized, informed consent is obtained, and the overall study design adheres to ethical principles.

This includes considerations of inclusivity, fairness, and transparency in participant selection, data collection, and analysis.

Ethics committees and regulatory bodies play a crucial role in evaluating research protocols to safeguard the rights and welfare of participants. These committees review the study design, potential risks and benefits, informed consent procedures, and adherence to ethical guidelines.

The ethical dimension adds complexity and time to the process of conducting large-scale experiments, but it is a critical aspect of ensuring the safety and well-being of individuals involved in vaccine trials.

Learn more about ethical dimension here

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Related Questions

What are the positive and negative effects of the mountain-climbing trade on the local environment and economy? need it in 3-5 sentences thank u please please help this is overdue

Answers

Answer: I

Explanation:

Positive effects of the mountain climbing trade are if it costs money the economy will increase.Negative effect is that you are harming the wildlife that surrounds.
Hope that helps

Paleontologists uncovered several different sized tracks of the same prehistoric creature. What type of fossil would this be, and what could it indicate?

A. These body fossils indicate the animal might have lived alone.

B. These carbonized fossils indicate that the animal could fly.

C. These preserved fossils indicate the organism had a mating dance ritual.

D. These trace fossils indicate the animal might have traveled in herds or groups.

Answers

Answer: D

Explanation:

The different sizes suggest that they went in herds, including younglings.

D pls give me brainiest hope this helped

Describe what happens at each step of an earthquake: Plate movement, rock breakage, seismic waves, surface waves, earthquake damage, and aftershocks.

Answers

Parts of an Earthquake

There are three main parts to an earthquake: the focus, or origin of the event; the seismic waves; and the fault along which the earthquake occurs.

hope it helps

Plate movement: When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust with causes rock breakage
Seismic waves: part of the energy released is as elastic waves that are transmitted through the earth. The waves are then detected and recorded by seismograms, which measure, amplify and record the motion of the ground.
Surface waves: Surface waves travel more slowly through Earth material at the planet's surface and are predominantly lower frequency than body waves. They are easily distinguished on a seismogram. Shallow earthquakes produce stronger surface waves; the strength of the surface waves are reduced in deeper earthquakes.
Earthquake damage: Ground shaking from earthquakes can cause buildings and bridges to collapse; disrupt gas, electricity, and telephone services; and sometimes trigger landslides, avalanches, flash floods, fires, and tsunami.
Aftershocks: smaller earthquakes that occur in the same general area during the days to years following a larger event or "mainshock." They occur within 1-2 fault lengths away and during the period of time before the background seismicity level has resumed.

According to fossil evidence, which life form appeared on Earth most recently?

A. algae (photosynthetic microorganism)

B. reptiles

C. flowering plants

D. fish

Answers

Answer: The answer is A

Explanation:

2.15 billion years ago. First undisputed fossil evidence of cyanobacteria, and of photosynthesis: the ability to take in sunlight and carbon

The answer is A
Photosynthesis is the the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.

create and explanation with the argument you are presented with.
There is a significant potential for conflicts over natural resources to intensify in the coming decades.

Answers

Is there a picture or something?

Because the population is continuing to rise, and the amount of recourses continue to grow , there is a significant potential for conflicts over natural resources to escalate in the coming decades.

Mangrove trees grow
A in benthic zones of lakes.
B in freshwater wetlands.
C in tropical areas and in subtropical areas.
D along riverbanks.

Answers

Mangrove forests only grow at tropical and subtropical latitudes near the equator because they cannot withstand freezing temperatures. Many mangrove forests can be recognized by their dense tangle of prop roots that make the trees appear to be standing on stilts above the water hope that helpsss!!!!!:)))

Tropical areas and in subtropical areas

Measurements of Carbon-14 in a skull indicate that 25% of the original amount remain. The half-life of Carbon-14 is 5,730 years. How old is the fossil?

A. 1,432 years old

B. 11,460 years old

C. 5,730 years old

D. 2,865 years old

Answers

Answer:

B. 11,460 years old

Explanation:

Half-life describes how long it takes for a sample to be reduced by 50%.

Half-Life of Carbon-14

Every isotope of different elements has different half-lives. The question states that the half-life of Carbon-14 is 5,730 years. This means that if there is a 100g sample of Carbon-14, then it will take 5,730 years for the sample to become 50g. Then, it will take another 5,730 for the sample to be reduced to 25g.

Determining Age

So, the age of a sample, or fossil, can be determined based on how many half-lives it has been through. We know that 25% of the sample remains. Starting at 100%, it takes one half-life to reach 50% and then a second half-life to reach 25%. This means that the sample of Carbon-14 has been through 2 half-lives. Since we know the length of the half-life, we can multiply 2 by 5,730 to determine the age of the sample.

2 * 5730 = 11460

The fossil is 11,460 years old.

B i think hope this helped hopefully right

I need help

Which components are part of all scientific investigations? Check all that apply.

A: scientific question
B: procedure
C: hypothesis
D: variables
E: control
F: conclusion

Answers

Answer:c) hypothesis

Explanation:

Answer: All except control

Explanation:

From the experience of doing science labs, I have never seen control being added, however I have seen the rest. If you want it in order it should be:

and F.

Which of the following explains why earthquakes are difficult to predict?

Foreshocks are sometimes in a different location from the mainshock.
Foreshocks are sometimes too small to detect and measure
The processes that cause seismic waves occur too fast to measure early.
The processes that cause earthquakes occur too far beneath the earth’s surface.

Answers

Answer:

I'm pretty sure it is C

Explanation:

yeah it's C

It is going to be the 3rd one

Each column of rock layers represents a different region of the globe. Which is the best index fossil?

A. Gastropod

B. Fern

C. Crinoid

D. Ammonite

Answers

D, I’m pretty sure He

I’m pretty sure it is Ammonite too

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