Electrons A.
are responsible for creating protons.
B.
fill energy levels known as orbitals.
C.
fill the open spaces in the nucleus.
D.
are created by reacting neutrons.

Why does asexual reproduction result in offspring with identicle genetic variation

At the current rate, a graph of carbon dioxide produced by fossil fuels over time would slope upward slope downward be horizontal be vertical

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.