What is the graphical representation is the amount of energy or matter in an ecosystem

What best describes the structure of the declaration of independence?

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

Which nucleotide component contains nitrogen