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The intensity or refraction depends on the material
Explanation:
In the experiment, the purpose it to determine the effect of the material on the refraction index. The refraction index is the ration of the incident ray to the refracted ray. This relationship is known as Snell's law of refraction
where i and r are angles of incident an the refracted ray and n is the refractive index. The dense the material, the more the angle bends. This means that the angle of refraction, as measured by the protractor, is going to be large.
Oil, wood??? I'm confused about the question
Answer:
Seed dormancy is defined as the process in which seed are prevented from germination even though environmental conditions are favoring.
There are several ways in which seed dormancy can be broken. Some of them are as following:
<u>Scarification:</u> scarification is a mechanical technique to breakdown the seed dormancy. In this technique, hard seed coat is removed from the seed under cold temperature.
<u>Hot water treatment: </u>The seed is kept into hot water between the 75 degree to 100 degree, that helps in removal of seed coat and allow germination of plant.
<u>Sodium hypochlorite solutions:</u> sodium hypochlorite (NaOCl) solution breakdown the seed dormancy by decomposing germination inhibitors, increases α-amylase activity and scarifying the seed coat.
Hence, three ways to break seed dormancy are Scarification, Hot water treatment, and Sodium hypochlorite solutions.
You could talk about a Salamander.
Salamanders are anphibians just like frogs, and they have many of the same characteristics.
Hope I helped! Good Luck in this assignment! :)
