This element is solid, forms the backbone of many compounds, and life is based on it. what is it?

Which represents the cross between parent plants if one is heterozygous for yellow-colored pods and the other is homozygous for green-colored pods? yy  ´    ´    ´    ´  yy

How far down have geologists drilled holes ? (science) a: 3.8 km b: 12 km c: 100 m d: 1200 km

If 360 joules of work are needed to move and create a distance of 4 m what is the weight of the crate