Jasmine made a stream table by putting some sand on a cookie sheet. She tilted the sheet and ran water down it. Which of these could Jasmine learn from the stream table?

A.
how freezing water causes weathering
B.
how running water weathers stone
C.
how to protect streams from too much erosion
D.
how erosion caused by running water shapes land

B

Explanation:

Since A has no place in this model it is false. C, could not be the answer because protection is not necessarily what this model represents we can assume that's false. B shows how running water weathers stone which is exactly what this model represents, weathering of stone. D is pretty close but running water doesn't shape land, doesn't it destroy it?

Hope that this helped

Sorry if its wrong

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.

plasma - state of matter made up of electrically charged particles