40 points! need answer quick! a is an object that produces its own energy including heat and light.

Sun

Explanation:

And the dude who answered below dude nobody asked for ur opinion u feel me bc nobody cares about "if I was you I look it up my answer" dude he is, this is his go to answer thing. so my dude really like c'mon no

answer; /// i do believe its (heredity); good luck

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.