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20.09.2019 •
Biology
Pls !
the color of fluorite changes due to
a. differences in the density
b. small amounts of different elements
c. differences in the hardness
d. small changes in the crystal structure
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Ответ:
Option B
Explanation: The fluorite is changes its color because of the presence of different kinds of elements in it. Different types of impurities have been included in the crystal lattice at different places which makes it look so colorful.
It also exhibits the property of thermoluminescence, which means on getting heat it will change its color.
Ответ:
They work together to perform a shared function, and examples may include xylem, blood, epidermis etc.
They're the second smallest unit in organisms behind cells.