Answer:
Seed Coat
Explanation:
Seeds protect and nourish the embryo or young plant. They usually give a seedling a faster start than a sporeling from a spore, because of the larger food reserves in the seed and the multicellularity of the enclosed embryo.
Let maggie's age be x
brother's age = 2x +3
24= 2x +3 +x
21 = 3x
x = 7
