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notka56 [123]
3 years ago
12

a pill that contains no active ingredients is given to a control group. Which is this type of pill called?

Biology
1 answer:
Alenkinab [10]3 years ago
4 0

This is usually called a placebo. They are used as control tests to make sure that a product actually works. A placebo, however, is not merely restricted to pills, though.

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How can I use MIE scattering to determine the best particle size to light scattering with glasses?
Gwar [14]

Answer:

There is a simple algebraic formula relating turbidity to optical properties. You do not need Mie theory. It is given in van de Hulst "Light scattering from small particles" (a nice cheap reprint from Dover Press). More easily accessible are any of the Mie calculators avaiable on the Internet, say Miecalc, these will give the exact result.

7 0
3 years ago
Which was an idea used to dispute the theory of plate tectonics?
umka2103 [35]

Answer:

option d is correct. the existence of land bridges between continents.

Explanation:

landland bridge theory which was used to explain why species would end up continents over, such as mammoth travelling to North America, thisthis theory was based on the idea that water eventually Rose to cover these bridges rather than the at having individual plates that moved away from each other.

5 0
3 years ago
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Which structure would be unaffected by the peripheral nervous system?
Sphinxa [80]
For the answer to the question above, the peripheral nervous system governs <span>all structures outside the brain and spinal cord. Peripheral nerves branch from the spinal cord through the foramen transversarium of each vertebrae. I suppose the structure it would not affect is the brain itself since cranial nerves are responsible for brain activity. Also, the spinal cord would also be unaffected since it is just a cylindrical bundle of nerve fibers that allow the connection of the peripheral nerves to the brain.</span>
6 0
3 years ago
Sonya is studying a nonmetal element. She learns that the element is like other elements in its group because it can bond to for
NemiM [27]

Answer:

The answer is C) fluorine (F)

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3 years ago
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PLSS help
Lina20 [59]

The energy source that is described in the image is light energy from the sun. The correct option is A.

<h3>What is chloroplast?</h3>

Chloroplast is a cell organelle that contains chlorophyll and aids in the process of photosynthesis in the presence of sunlight using carbon dioxide and water.

The missing image of the question is attached as an image.

The energy source that is described in the image is light energy from the sun.

Thus, the correct option is A.

For more details regarding chloroplast, visit:

brainly.com/question/11136550

#SPJ1

6 0
2 years ago
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