Hello!
You forgot the alternatives!!
Here we have:
<span>a. thymus
b. spleen
c. tissues
d. lymphatic ducts
</span>
The only structure listed above that is not a specific part of the adaptive immune system is the letter c) tissues. The tissues are a group of cells that do the same job: connective (maintain the organs in their place), muscle (produce movement within internal organs), nervous (sensory input, control of homeostasis etc), and epithelial (protection).
Hugs!<span />
1) Speed = distance / time
s = 60 / 2
s = 30 km/h
In short, Your Answer would be Option B
2) Speed = distance / time
s = 25/4
s = 6.25 km/h
In short, Your Answer would be Option B
[ Direction not needed as it is speed not velocity ]
Hope this helps!
Based on the research of Albert Einstein the best way to increase energy of emitted electrons when using red light is to use a different colored light that has a higher frequency. Albert Einstein has proved that t<span>he energy of the emitted electrons depends only on the frequency of the incident light, and not on the light intensity.</span>
The three colors of cellophane serves as the light source for the set-up. The three colors would give different wavelengths of light to the sample in the jar. It is the independent variable in this experiment. Hope this answers the question.