What is one role that lipids play in the body? athey provide a quick source of energy for cells. b-they make up the contracting structures of muscles. c-they store coded information about heredity. d-they make up structural parts of cell membranes.

Lipids, also known as fats, play many important roles in your body, from providing energy to producing hormones. You wouldn't be able to digest and absorb food properly without lipids. I believe your answer is D.

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D-They make up structural parts of cell membranes.

Answer : option a) 84explanation :

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.

Ibelieve its because the stove is a cleaner burning fuel