An eperiment is performed on plants to see how different liquids effect plant in the experiment is given a different liquid: water, apple juice or milk. What variable
should be kept constant/controlled? *
type of plant, soil, amount of sunlight, and flower pot
only the amount of sunlight
water, apple juice, milk
type of plant only

answer: lol

explanation:

lol

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

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.